Home

Aurora Inverter Installation & Maintenance Manual for PVI

1. pBOBOJBOBO Figure 11 7 Internal terminal block ACBOX area for PVI NEMA3R 250 300 US TBD Figure 11 8 Internal terminal block ACBOX area for PVI NEMA3R 350 400 US TL To make any of the terminal block connec tions described in this section use a flat blade screwdriver sized to accommodate the clamp screws with a tip of approx 1 8 inch To make connections the screw insert the cable s and then tighten the screw to a maximum torque 70 in oz Do not tighten the screws with force a torque of more than 70 in oz to avoid damaging the clamp Figure 11 7 and Figure 11 8 replicates the terminal block in the ACBOX area Chapter 85 2 Figure 5 11 Figure 5 13 The X16 and X27 clamps are dedicated to the RS 485 communication connection Table 11 2 Terminals from X1 to X6 are used to allow monitoring of the ON OFF state of each of the 50kWp modules Table 11 3 Terminals X10 and X11 are connections for controlling the ON OFF state of each 50kWp module via an external command Table 11 4 The left side of Figure 11 7 shows the internal construction of the terminal block Note that for each column there are internal communications between rows C amp F B a
2. HM 13 533 WESCE CAU CEU E 1359 YDE ieee AA EE EE EEE REAREA S UT VON ORTI I ororena ee EEEE AEE E E EE EE AEE E EEE EAT EEEE E EEE fA POWEr 0ne Changing the Shape of Power 68 77 77 Installation and Operation Manual Page 7 of 132 PVI NEMA3R XXX US TL Rev 1 0 13 5 7 Junction Box only on the module designated for control sss 77 oXov NM 78 13 572 MP 78 V Poe ldi ru MEC 78 13 6 STATISTICS T U 78 13 6 1 IMIN 78 13 6 2 N Conn Number of Connections atheuDaseteuddu va eid tevatbeue 78 T363 ETO NUIT 78 78 13 6 5 E tOQAY ERROR e 78 13 6 6 nunen sa Eaa Ane 78 ne EERE E n 78 RM A EEA EE EEE EE AEE 79 13 6 9 LASEN DOYS een EEE E ERE EE E E E E EAE E EE ere EAE E 79 13 6 10 Power PEN 79 14 AURORA CENTRAL PVI MONITOR ccsccsccscsccsccsceccsccsccccsccscnccsccscecc
3. 3 1 POO VOI INTE RG 3 2 FUNDAMENTAL ELEMENTS OF THE PHOTOVOLTAIC FIELD STRINGS AND ARRAYS cccscecececescecsccccccscececececuecececacs 4 SCOPE AND GENERAL DESCRIPTION OF THE PRODUCT 4 1 TECHNICAL DESCRIPTION OF AURORA PVI NEMA3R XXX US TL eese 4 1 1 1Master N Slave Inverter 2 CICS coactus PURO dederat E EATA Hn ante t an IE IM MENU NEM 5 DESCRIPTION OF COMPONENTS AND COMPOSITION OF THE PVI NEMA3R XXX US TL T 5 2 DESCRIPTION OF THE INVERTER PARTS esse esse esse esse esse esse se esse esse etes 5 2 T ACBOXI ANF 5 2 1 1 Versions with Transformer PTT TOO OO LOT DT TOT TT 5 2 1 2 Version without isolation Transformer RUBUS EENVE 5 2 1 3 Control devices and electro mechanical parts contained in the ACBOX 5 2 1 4 Control terminal board devices and electro mechanic devices contained in ACBOX area F 5 2 2 50kWp Modulesared RT 5 23 AC D T
4. N L T S R GRD Q eoo AAA EXTERNAL AUXILIARY INPUT 3Ph PE Figure 11 5 Wiring terminals for connecting the auxiliary AC grid feed and associated circuit breaker QS2 T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 65 of 132 PVI NEMA3R XXX US TL Rev 1 0 11 6 Connection of GROUND FAULT DETECTOR GFD A ground fault is a condition that can affect GROUND operational safety and by regulation when E 8 sensed the inverter must be disconnected SS ese essi rese ees epee es from the grid GROUND i DETECT DETECT ETEC MODULE 1 2 MODULE 3 4 MODULE 5 6 Aurora PVI NEMA3R XXX US TL inverters are equipped with ground fault detector EERE ooo ee N 4 controls The function of the GFD is to sense a ground fault current above a specific 1 1 limit and cause disconnection of the inverter from the grid This function is performed by eei a suitable fuse which blows at the required 10 JI level and the control monitors this condi GROUND FAULT tion and
5. 5 2 4 Framework area 5 2 5 Enumeration of the 5OKWDp irte rte tlie trhe etre ERE n ael EA C e pe tle 6 DESCRIPTION OF THE INPUT CONFIGURATIONS AND DC SWITCHES 6 1 POSSIBLE FIELD CONFIGURATIONS csesecccsseseccuseccnscsensssnnseseuessesessneuseseuesseuessneuseseussseuesseneusesenesseueseneusesensssea Reo DR cuascceaabe eaten vo Fin kan td pid AR ER UE anne EE QN MN RUE 6 1 2 Master Slave with a single iens ines tini te HB TOR RATE U ERRARE UR 6 1 2 1 Features of the external DC switch 6 2 FUNCTION OF THE DC DISCONNECTING SWITCHES IN EVERY FRAMEWORK 6 2 1 Multi Master Slave System PVI NEMA3R 250 300 US cccccccccccsssccccccccccscccccceccsscessceesseseeeeseseseeeeess 6 2 2 1Master N Slave System PVI NEMA3R 350 400 US TL ccccccccccsccccsscccccccccccccccscscsescsssessssseeeeeeeceeess 7 c 7 1 PROTECTION FOR GRID FAILURE ANTI ISEANDIING RR Rv y I rcg ei n Bes rb ZoLADDITIONALPROTECTIOB aedi sroine Eurekas Ku ie nan an ANO vs cca ds tad vt ORE REA DIR ERRARE tama Dr Ran RR Lx d n Rus 8 eut RIS LINE
6. l Language Active Software ON OFF Inactive T POWEF DIE 0 hanging the Shape of Power Installation and Operation Manual Page 76 of 132 PVI NEMA3R XXX US TL Rev 1 0 ID Module Information ID System Trafo Type Figure 13 4 Functional diagram of the display navigation of the Information menu Timing N Connections E TOT Partial E Day E Week E Month E Year Last N Days Selection N Days Power Peak Figure 13 5 Functional diagram of the display navigation of the Statistics menu Module Serial Numeber oystem Serial Number Firmware Partial Reset Statistics 4 LM POWEr 0ne 0 hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 13 5 Information Menu By selecting the INFORMATION menu the display will Show the submenu shown in Figure 13 4 13 5 1 ID module Selection of this item will display the Part Number of a selected module that is part of the system 13 5 2 Mod Series No Selection of this item will display Mod Series N the following information will be shown Series No Series number of the selected module Wk xx Yr xx Production week Wk and year Yr of the module 13 5 3 System ID Selectio
7. 5 Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 The family of PVI NEMA3R XXX US TL in verters Figure 4 1 are devices designed exclusively for converting solar energy into electrical energy that is compatible with the grid of the country where it is marketed and they are equipped with adequate elec trical and mechanical protection If the inverter s communications link is connected to Aurora string com biner boxes AURORA PVI STRINGCOMB US it will allow moni toring of the entire photovoltaic field including the following infor mation e Reading the string currents 10 channels available e Reading total voltage of the field e Check proper functioning of the in ternal fuses to protect the photo voltaic panels e Ability to read other information temperature and irradiance us ing optional sensors The AURORA PVI NEMA3R XXX US TL in verters can feed the connected electrical grid with energy from the photovoltaic pa nels Q Chapter 83 Page 21 of 132 When connected to the grid alternating current from the inverter output flows in the local distribution circuit and in turn to the public distribution grid Figure 4 2 and Figure 4 3 connection to medium voltage 7 MV electrical grid described Fig ure 4 3 models marked as TL are not provisioned with an internal iso lation transformer and must have a dedicated external transfo
8. e o J2 GROUND FAULT DETECT MODULE 5 6 J3 f 1 5 ee FUSE FAULT HOLDER LED Figure 17 5 GFD and fuse holder f the replaced fuse trips again it will 4 necessary to check the system to locate the ground fault Page 114 of 132 17 1 3 2 Fan control The 50kWp module fans are moni 2 tored automatically when the inverter is functioning and therefore they do not need to be checked for operation To check for the correct functioning of the fans in the ACBOX area and Framework area carry out the following procedure e Note the present setting of the ther mostats shown in Figure 17 6 and Fig ure 17 7 to allow subsequent reset af ter the following procedure the nor mal setting is approximately 40 C e Insure the CB switch QS2 is ON e Turn the thermostat temperature con trol knob completely counter clockwise e With the knob at this setting the ther mostat the fans will be activated e Make sure all are moving regularly and do not produce unusual noises e Turn the thermostat back to the origi nally noted value Figure 17 6 Thermostat for Framework fan 1 Also valid for ACBOX Transformer AN POWEI DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 ERMOSTAT TA r Figure 17 7 Thermostat for Transformer Fan 17 1 3 3 Check of the power switch ope
9. RELAYS amp GROUND FAULT ih AC CONTACTOR FAN FUSE amp HYGROSTAT RELAY RELAY GROUND i GROUND i GROUND FAULT FAULT FAULT DETECT DETECT MODULE 3 4 MODULE 5 6 J3 J4 DETECT MODULE 1 2 J3 J4 Figure 5 15 Control Relays and Ground Fault Interrupters 5 2 2 50 Modules area C visioned 250kWp or 350kWp versions all electromechanical components from the The 50kWp module is the heart of the PVI unused slot are not provisioned inverter family and this area is al lows connection of one or two1 50kWp 5 2 5 Enumeration of the 50kWp modules that convert PV power into electric Modules power compatible with the distribution grid Each module is equipped with signaling LEDs and an interactive display The numbering of the inverter module slots is as indicated in Figure 5 1 and Figure 5 2 The right lower module will always have the 5 2 3 AC Fuses area D number 1 while the final number depends on the inverter model e g for the from 250kWhp version the numbering ranges from 1 to 5 module In addition two transparent win dows allow visual inspectio
10. INVERTER AC Fuse from ee 0 FILTER 55 KW FILTER e AES Em from ee ve a ues 55 KW FILTER P d Rud E Solar DC Fuse cx Jae te Solar DC Fuse lx lx a c ee Panel E s e a FILTER Panel 7 LL FILTER ws A INVERTER MODULE 50kW DC Breaker DC Breaker E mene anm Fuse za Eee AC Fuse S X ON Se T EMI EMI DC Fuse ow 4 DC Fuse ow oe A FILTER oe _ FILTER DSP p GFD RETEN oe d GFD bes EE control 1 control OVR DN Y OVR OVR deser pet INVERTER MODULE 50kW INVERTER MODULE 50kW DC Input D Esa mverter une Fuse DC Input ps Breaker inverter une ome B AC Fuse from P MGE x FILTER 55 KW FILTER a US S m from ce 5d FILTER 55 KW FILTER P RAN EH Solar DC Fuse x Jo ete Solar DC Fuse lox x Panel J E FILTER Panel FILTER EN A INVERTER MODULE 50kW DC Breaker 7 S DC Breaker S m ERES Acruse CEES Ea E AC Fuse DSc e Tr Te Me JI _ Te IV uin i EMI PR EMI DC Fuse ow ow a FILTER DC Fuse 5 9 E xb 9 9 DSP E L i i GFD GFD sesto tet control 1 control OVR m Figure 4 5 Electrical diagram PVI NEMA3R XXX US TL Transformer less versions POWEF DIE Changing the Shape of P
11. In this case it is particularly important to understand the use of the DC disconnecting switches Improper use may cause the inverter to break down The following table indicates the position of the switches in the first column and in the second whether the PV field is connected to the module and in the third whether the specific 50kWp module can be removed or inserted in the slot Table 6 1 PERMISSIBLE POSITIONS AND OPERATIONS OF THE DC INPUT SWITCHES MULTI MASTER SLAVE Inverter lt 300kW Physical CONNECTION between DC Withdrawal of Modules Position source and Module Disconnecting switches DC Figure 6 4 before removing a 50kWp module wait 5 minutes after the last disconnecting switch was posi tioned to OFF O position 6 2 2 1Master N Slave System PVI NEMA3R 350 400 US TL In this configuration the inputs of all modules are connected in parallel and connected to a com mon PV field All DC disconnecting switches are linked to one another AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 41 of 132 PVI NEMA3R XXX US TL Rev 1 0 In this case it is particularly important to understand the use of the DC dis connecting switches Improper use may cause the inverter to breakdown The following table indicates the allowed operations for the DC switches of each framework ac cording to the position of the external DC switch Table 6 2
12. qd ot 10 2 2 Accessible step Orea cusantium 1023 Ar VENTS PE 10 2 4 Removal of panels to make the 10 2 5 Composition of the ACBOX OF BU deiecit nie DU E RUE EIQUE HERE FLUR ip ENTRAR 10 2 6 C ble passage DEO oak at Rond MO PX UD bata On Era Donne 11 ELECTRICAL siewensmasiewelnsmasiewenseasewesmasewensmasawensnasunverlivessversecsavt 11 1 PRELIMINARY OPERATIONS FOR THE ELECTRICAL 11 2 CONNECTION OF THE DC CABLES FROM THE PHOTOVOLTAIC FIELD dnos Saxo atrae d Ram aMOT a min bo Mp dn 11 3 CONNECTION OF THE PROTECTION EARTH CABLE 11 4 CONNECTION OF THE AC POWER CABLES E Un REB unu E 11 5 CONNECTION OF AUXILIARY ENERGY SUPPLY mE RR RIEN hk trece 11 6 CONNECTION OF GROUND FAULT DETECTOR GED cccccccsssssseceeeeceeesecceeeeeeesececeesesaeeseceeeeeeenseeeeeseaengess 11 7 CONNECTIONS FOR COMMUNICATIONS STATE SIGNALS sese nennen nennen nennen nennen nennen nennen enne
13. gt power one Changing the Shape of Power Installation and Operation Manual Page 34 of 132 PVI NEMA3R XXX US TL Rev 1 0 Starting from the left side and moving right Figure 5 11 illustrates the location of the following devices e Input and output terminal board for the e Thermostat TS3 for monitoring trans control signals The terminal board in former box temperature the centre allows for serial communica e Status signaling relay for the main AC tion with an overcurrent protection de counter vice e Two AC DC 5V insulated suppliers PS1 e Hygrostat HG1 for the detection of and PS2 humidity AUXILIARY BREAKER AUXILIARY SOCKET N L lee OVR PROTECTION e mw ld hl Hd ES Ia i OVR OVR OVR T Q 2 D GRD e e ee Ie 19 BREAKER FOR _ 4 AUXILIARY AUXILIARY VAC INPUT ETE Figure 5 12 Auxiliary AC Input In Figure 5 11 starting from the left illustrated are e The auxiliary supply input terminal board e Circuit breaker QS2 for auxiliary voltage normally cabled from the inside e Overcurrent Protection devices SC2 e Duplex socket for s
14. 0 hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 73 of 132 The following table shows the five configurations which can be indicated by the LED display during operation STATE OF LEDs POWER ON ALARM MISSING GRID MASTER GFI POWER ON ALARM MISSING GRID MASTER GFI POWER ON ALARM MISSING GRID MASTER GFI POWER ON ALARM MISSING GRID MASTER GFI POWER ON ALARM MISSING GRID MASTER GFI Table 13 1 Meaning of the display LEDs MEANING All LEDS are off dark The module is not receiving power and all signals are absent The module is connected to the grid The module is Master The module is connected to the grid The module is Slave The module is not connected to the grid The module is Master The AC grid is absent or out of range The module is in an alarm state due to a problem in the grid The module is not connected to the grid The module is Master The module is in alarm state due to a problem s NOTE In the table the uniform color indicates the fixed LED on while the alternating color 1 indicates the LED is flashing lt POWEr 0ne 0 hanging the Shape of Power Installation and Operation Manual Page 74 of 132 PVI NEMA3R XXX US TL Rev 1 0 13 4 Functional diagram of the display Menu 1 GNE ox Settings m Settings Pout xxx W Igrid xxx A T A Up l 5 secs Up gow
15. 16 4 Use of the monitoring program Double click on the Aurora Central CVI icon and wait for the COM set tings screen of Figure 16 2 to appear after processing screen Please wait Zi COM Settings COM Configuration PC COM ports Baud Rate 19200 bps COM Set Figure 16 2 COM Settings screen Enter the correct COM port number to which the RS485 232 adapter is connected into the PC COM Ports field Enter the communication speed into the COM Baud Rate field Press the COM SET button to open the screen of Figure 16 3 Page 90 of 132 1 Select Interface Mode Interface Single Modul Single Module ondes Plant ACCESS Figure 16 3 Choice of the interface type Choose the desired path by picking one of two options for Interface Mode e Single Module all modules connected to the RS485 line are displayed e Plant all racks connected to the 54 85 line are displayed electi access mode Access Standard ser Standard ser Advanced Techn Select access mode either standard or ad vanced as desired and press the ACCESS gt gt button in the above screen to open the screen of Figure 16 4 Figure 16 4 Advanced Mode Login m If the advanced mode is chosen it is i necessary to insert the password rora In standard mode some me nus will be disabled gt AN POWEF ITE Cha
16. TBD 13 OPERATION OF THE 50KWP MODULE INTERACTIVE DISPLAY 13 1 How the display functions INVERTER DISPLAY POWER on 0 MISSING GRID NN MASTER UP DOWN ESC ENTER Figure 13 1 Display of the 50kWp module The two line LCD display Figure 13 1 is lo During normal operation data is shown cyc cated on the front panel of each 50kWp lically By default the display updates every module and shows the following informa 5 seconds or it can be controlled manually tion by pressing the UP or DOWN keys The operational state of the inverter and From any location in the program to return statistical data to the preceding menu press the ESC key Service messages for the operator j Activation of cyclical scrolling is indi Alarm messages cated by the two arrow icon in the top left corner of the display T POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Scrolling can be halted by pressing the EN TER key The padlock icon will appear Padlock The display shows only 2 lines therefore to view other items or gain access to sub me nus use the front panel UP and DOWN side keys When an item is selected it will be hig hlighted by an arrow on the left side of the screen Upon selection of the chosen press the ENTER key to enter the associated sub menu 13 2 Password entry If a pa
17. e Date and time rounded by a line The color of this e Mains or battery power supply line indicates the status e Battery level e Green line Inverter connected and e colored central part of the operating correctly display shows the 50 kW modules e Yellow line Inverter on but not yet as icons present in the moni connected to the power grid tored system Each 50 kW module e Red line Inverter in alarm contained in the device is sur e line Inverter off Clicking on one of the icons for the 50 kW modules will open a balloon containing the identification data of the single module and its operation status Figure 14 4 gt AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 82 of 132 PVI NEMA3R XXX US TL Rev 1 0 8109 E E 8 4055 sit 1035 Y ogg Te 4622 Figure 14 4 50 kW modules information The black central part of the screen provides a summary of system data i e generated instantane ous power power produced today money saved total power produced by the system since instal lation money saved overall and reduction of carbon dioxide Clicking any point within the black section displays detailed information about the system Figure 14 5 AURORA 1E 38 01707M0 a ae a r a Pol 15 5kW Po 16 1kW 15 1kW Po4 17 2kW PoS 16 0kW 15 9kW 9 5 8 x eben 8116 pe kw 40585 5401 1042599 521 0
18. f Fmin Fmin is adjustable from 57 to 59 8 T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 132 of 132 PVI NEMA3R XXX US TL Rev 1 0 26 CERTIFICATE OF CONFORMITY These items to be added POWEI DIE hanging the Shape of Power
19. SE 8 1 CONNECTION MODALITIES OF THE 54 85 8 2 CONNECTION MODES FOR MONITORING sese sesso T POWEr 0ne Changing the Shape of Power Installation and Operation Manual Page 6 of 132 PVI NEMA3R XXX US TL Rev 1 0 9 STORAGE AND HANDLING isis PNE ERE RNEEUAMENFEUR M MEUM BL PREOMINARY CHECKS 9 2 HANDLING AND WITHDRAWAL OF THE PVI NEMA3R XXX 0 TL FROM THE 9 2 1 Content of the DOCKRBDIO XIESGU MU REREEF ANNE Na NEN E MR VOI RB T GONE ROVER V M U Y 9 2 2 Removal of the inverter from the wooden crate isses eese 9 2 3 Handling of the PVI NEMA3R XXX US TE eese uat nine coire onte C e ERE 10 INSTALLATION Mem c M 10 1 INSTALLATION LOCATION loe intonat OR HO BOUE RACER ERN ANN NNE REDE AA DUM Ka RARO 10 2 POSITIONING IN THE SELECTED PLACE AND CHARACTERISTICS OF THE SUPPORT 10 2 1 redd EAR vba tad O
20. ino Secr Ceol Coren Usa Eur essit Hr Dips n Pepay 1 rr s a Duma Poss uci gt Lees SCR b Codie Defic Cae W P Mie Co Diol Poser ure FA EYA CHEN m be men Bere i ip be om F e SF EE arim Figure 1 1 UL mark and Caution and Danger labels power one Changing the Shape of Power Installation and Operation Manual Page 14 of 132 PVI NEMA3R XXX US TL Rev 1 0 a e c A A gt 9 7319599450006 NT PART NO P ae e 7 a e we CONFERMA N S0000000Y 5 N Power One p n y 7 Power One S p A N 7 C ow AAV ISUAZLSYWILINW 5 7 N Figure 1 2 Identification label The items on the ID label of Figure 1 2 are as follows e Generic code Part Number Serial order Serial order total quantity Shipping configuration Serial Number Production date General description of the product Country and Factory of origin 1 4 Documents provided with the device e This manual e Test Certificate e CD AN POWEI DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Re
21. 7 Days 30 Days 365 days or set by the user Totale Parziale Oggi 7 giorni 30 giorni 365 giorni Utente Figure 14 6 Statistic menu AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 84 of 132 PVI NEMA3R XXX US TL Rev 1 0 14 4 2 Settings menu In this section Figure 14 7 changes to the configuration parameters can be made _ CHE lt lt Data Ora Moneta Display Linigua Assistente configurazione Aggiornamento Firmware Figure 14 7 Settings menu ltem Description allows change to the date and time allows insertion of the local currency to calculate energy saving earnings allows setting the backlight over a O to 9 scale and recalibrates the touch changes the system language opens a guided procedure to allow reconfiguring1 of the communication Settings assistance channel starts a procedure to update the firmware of Aurora Central PVI Monitor in Firmware updates i order to obtain the latest version released Qe 514 5 1 The configuration is done at the factory AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 85 of 132 PVI NEMA3R XXX US TL Rev 1 0 14 4 3 Information menu The subsections of this menu provide information about the serial number of Aurora Central PVI Monitor the serial numbers of all inverters connected to the s
22. C e Energy today Energy produced today kWh e Energy last week Energy produced last week kWh e Energy last month Energy produced last month kWh e Energy last year Energy produced last year KWh Energy partial Energy produced since the last re setting KWh Energy total Total energy produced until today kWh Double clicking on the icon of the sin gle module will access the manage ment menu of the single module Figure 16 10 Double clicking on the icon of the rack will return the display to the rack interface menu Figure 16 9 f The management menu of the single mod ule Figure 16 5 can be accessed as indi cated above or alternatively by choosing single module in Figure 16 3 and pressing the ENTER gt gt button of the Single Module Panel window Page 96 of 132 16 4 4 Menus bar From the standard or advanced mode the user may access the following menus Menus in Standard mode Module gt Module interface Rack gt Rack interface ID gt Inverter Identification Monitoring gt Inverter Monitoring String Comb gt StringComb monitor Info gt Software version gt Software license Menus in Advanced mode Module gt Module interface Rack gt Rack interface ID gt Inverter Identification Monitoring 2 Inverter Monitoring gt Fault Log Statistic gt Statistic field reset gt Inverter clock settings String Comb gt StringComb mo
23. PVI NEMA3R 400 US TL 1 51 38 FIGURE 6 3 FRAMEWORK DETAILED ACTION ON DC SWITCHES i ences eser kao aaa np REM ven y XXV EHE EEREE 39 FIGURE 6 4 POSSIBLE SWITCH POSITIONS vba STI Eva Rd swa dba rh diner UE aM Saba 39 FIGURE 7 1 POWER DERATING 250 300KW 42 FIGURE 7 2 POWER DERATING 350 400KW 42 FIGURE 8 1 WIRING METHOD OF THE PVI NEMA3R XXX US TL COMMUNICATION SERIAL 44 FIGURE 8 2 RS 485 BUS WIRING DETAIL FOR THE PVI NEMA3R XXX US TL eese nenne 44 alc riz Rep zeeshueblq e T c 45 FIGURE 9 1 TRANSPORT CRATE ASTU ERN FUR EDU Mae adu eae vata EUM MU ADR D Und quU 48 FIGURE 9 2 ALLOWABLE HANDLING TECHNIQUES ao noceat ek CER HP E t OC e 49 FIGURE 10 1 FOOTPRINT OF THE INVERTER BASE d eina i etg db ba td nin DERE ba n i d V 52 FIGURE 10 2 CABLE PASSAGE 52 FIGURE 10 3 INVERTER BASE ANCHORAGE HOLE 5 nenne tensis snnt ea stesse resa sns 52 FIGU
24. and or identify an alarm and gain access to a single module Ihe LOGO images and system infor on this page can be all custo mized AN Changing the Shape of Power Installation and Operation Manual Page 94 of 132 PVI NEMA3R XXX US TL Rev 1 0 P Display Solare Communication Interface Display Info 16 3 kW 09 49 17 NOminas 1 Inserire le informazioni dell impianto nei cam bella Figure 16 8 Display of Solar monitoring POoWEer one Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 16 4 3 Rack Interface m Rack Interface Plant Info Page 95 of 132 Voltage panel V IN Voltage IN Cunent IN Power Bulk Voltage 1 2 V Buk Voltage 172 V Grid Voltage RS Verne Grid VoRage ST Vime Gnd Voltage TR Verne Grd Curent Aras Cunent 5 Arns Gnd Current Antes Gnd Power W MCU Powerteed Temp Heat Sink Temp C Aux 2 C Aux 3 C Energy today kwh Energy last week Energy last month kwh Energy ast soar kwh Energy kwh Energy total wh Figure 16 9 Rack Interface Rack Management In the Rack Interface mode the main para meters and the state of every module of the system can be observed refer to Figure 16 9 The symbol indicat
25. module is used for management of data eThe window shows a summary table of all associated with any connected AURORA models found The parameters indicated string combiners PVI STRINGCOMB US in the columns are as follows e By pressing the corresponding ENTER button associated with a given row access is gained to the management functions of the selected module Figure 16 9 AN POWEF ITE Changing the Shape of Power Installation and Operation Manual Page 92 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 2 Plant Configuration When initially displayed the screen shown in the left side of Error Reference source not found will be empty because the program must first scan to determine how the plant confisuration RACK SN MODULE SN MODE STRINGCOMB Figure 16 6 Plant Configuration To initiate a scan click on the Start PLANT e Module N Mode StringComb The Scan button and the system will search and number of modules contained in the list all connected and functioning Racks rack Module No operating mode Mode and the number of connected The right screen of Error Reference source string boxes S Comb can be segregated into several By pressing the Set S Comb Manager areas providing the following information button the menu shown in Figure 16 6 e Plant value This area of the screen can be accessed and by pressing the displays the instantaneous power out SELECT
26. 11 7 1 Connection for the user RS485 serial communication eese eese nnne nnn nnne nna 11 7 2 Setting the RS 485 120 ohm termination eese na 11 7 3 Connection for the RS485 serial communication with PVI STRINGCOMB US 11 7 4 Setting the RS 485 communication addresses eese esses enean LL Inn CIE EE mI ERI eM UM MINIM NAI Nu ENIM M ISSN CI ME 12 POWER UP AND PLACING IN SERVICE E KOH NEP EON EFRON EP EON EP ADHI EP POR HEP RORIS EPRHDHE AN ucges neq 12 2 SEQUENCE FOR COMMISSIONING THE MULTI MASTER SLAVE 5 12 3 SEQUENCE FOR COMMISSIONING THE 1MASTER N SLAVE SYSTEMS seen nnne renes senes 13 OPERATION OF THE SOKWP MODULE INTERACTIVE DISPLAY 13 1 HOW THE DISPLAY FUNCTIONS sime tak YR ep 1 3 2 PASSWORD ENTRY C 13 3 THE P cR idRcp c 13 4 FUNCTIONAL DIAGRAM OF THE DISPLAY MENU 135 5 INFORMATION MEN ga FUR bu UFU bu EUR Rui NUN MENU 13 5 1 DM module NER 13 5 2 Mod Series NO
27. 132 PVI NEMA3R XXX US TL Rev 1 0 10 2 3 Air vents Air is suctioned through the front of the inverter and exhausted out from the rear as shown in Fig ure 10 6 Q Chapter 517 1 1 The air input area contains removable washable filters E beer Pe 2 Sq 2 2 Pe gt e d da ee 0 2 p Figure 10 6 Airflow path through the inverter AN POWEF IIe ASO hanging the Shape of Power Installation and Operation Manual Page 56 of 132 PVI NEMA3R XXX US TL Rev 1 0 10 2 4 Removal of panels to make the connections Remove the panels indicated below in the Figure 10 7 and Figure 10 8 Remove the panel covering area G to access to connections for connection to AC mains at 480Vac or 208Vac Remove the panel covering area H to access to connections of the auxiliary voltage that feeds the control log ic the internal fans and also access to the terminal block containing the connections for RS485 communica tions Remove the panel covering area L to access input connections from the PV array DC Figure 10 7 Access panels to be removed for PVI NEMA3R 250 300 US 1 Version 350kWp and 400kWp AN POWEr one Changing the Shape of Power Installation and Operation Manual Page 57 of 132 PVI NEMA3R XXX US TL Rev 1 0 Figure 10 8 Panels to be removed for PVI NEMA3R 350 400 US TL To remove the metal panels it
28. 50kW ome i reaker DC Input DE Breaker emc nwerrer une AC Fuse DC Input DE AC Fuse Be sa T T ES SEI EIS AN 1 Le olar use A gt 4 Panel dr Panel i FILTER c E 1 H eee men 4 INVERTER MODULE 50KW i INVERTER MODULE 50kW DC Breaker 7 DC Breaker F J wane um AC Fuse e TA Ac Fuse TUE 1 Lip J e e e DC Fuse E 21 DC Fuse y a FILTER Si o o x Up EP p DSP E eF GFD control 1 control OVR OVR run OVR Fas dene BREAKER EE INVERTER MODULE 50kW DC DC Breaker es ma Tue Ac Fuse from TE x FILTER ssw purer BEN vy oS EMI Solar DC Fuse Joe E on Panel LR PLTER DSP 1 330 TRASFORMER i INVERTER MODULE H reaker 7 x werter une 9 AC Fuse gt 4 y PUER siw mR a ox 5 d m gt stl DC Fuse SERE FILTER o x 2 Lc m GFD Lo sd me control kt OVR Bd Figure 4 4 Electrical diagram PVI NEMA3R XXX US with Transformer on board a La rt OVR bie OVR i INVERTER MODULE 50kW NI INVERTER MODULE 50kW DC Input DC Breaker INVERTER UNE E i AC Fuse DC Input i pC peker
29. 6 For the terminals of Table 11 3 module state are dry contacts and be used to externally monitor the ON OFF state of each module As such a low voltage e g 12V or 24V source can be connected but must be current limited to 1A or less 4 Page 67 of 132 11 7 1 Connection for the user RS485 serial communication An RS 485 communication cable used for inverter monitoring is connected to the terminals shown in Table 11 2 2 See also Table Figure 11 7 and for the position and names of the signals in the terminal block Chapter 58 j Terminals from X16 to X19 and X24 to X27 are fully removable facilitating the connection operation Figure 11 9 Removable clamp RS485 Connect the 485 signal s to the X17D clamp Connect the 485 signal s to the X18D clamp Connect the return s RTN or earth to the X16D clamp Connect the cable shield to the X19D ter minal After every connection try pulling the cable to make sure that it is properly secured If PVI NEMA3R XXX US TL inverter isn t the last of the daisy chain it is necessary to make sure that the 120 ohm termination resistor is disabled AN POWEI DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 11 7 2 Setting the RS 485 120 ohm termination resistor Each PVI NEMA3R XXX US TL inverter has a switch settable termination resistor for the RS 48
30. AND FUSE HOLDER Et PUTA Id Bud d den RU dor ku d RI RU IER 114 FIGURE 17 6 THERMOSTAT FOR FRAMEWORK FAN sssscccssesccnsscecsssecusesensssesssneuseseusesseeuseneusssensssecuseneusesenseseeeuseneusesen 114 FIGURE 17 7 THERMOSTAT FOR TRANSFORMER FAN sssscccssssceesseccnscsensssesseccuscseussseteuseseuseseuesseeuceseuscseuesseueuseseussses 115 FIGURE 17 8 OVR AUXILIARY VAC DEVICES usua aodio etat NND eO aD th 115 FIGURE 17 9 OV R VAC GRID rr r 115 FIGURE 17 10 OVR DC DEVICES Raub LERRA A Coa MERO Aat Ras bU daba ERR ARRA E 116 INDEX OF TABLES TABLE 6 1 PERMISSIBLE POSITIONS AND OPERATIONS OF THE DC INPUT SWITCHES 40 TABLE 6 2 ADMITTED OPERATIONS AND POSITION OF THE DC SWITCHES 41 TABLE 10 1 ABLE OF RECOMMENDED RUM CEA PUR M 53 TABLE 10 2 TABLE OF RECOMMENDED DISTANCES FOR ACCESS AREA 54 TABLE 11 1 TABLE OF THE MINIMUM RECOMMENDED DIMENSIONS FOR THE GROUNDING 62 TABLE 11 2 COMMUNICATION SIGNALS IN THE TERMINAL BLOCK ceseeeeeen nee esee snnt esten nnns 67 TABLE 11 3 STATE SIGNALS IN THE TERMINAL BLOCK ERN OR PER PAIR UA Fn rab ERR 67 TABLE 11 4 CONTROL S
31. FIGURE 1 2 IDENTIFICATION LABEL coes dioere att keen dta CUR PoQUR DYNEUR EUR EORRRS AERE GAVReEN GR PORRO 14 FIGURE 3 1 ARRAY COMPOSI TION senan dada dcr n RUNE RD DDR DC UR RD Re VER CR RR UE 19 FIGURE 4 1 PVI NEMA3R XXX US TL nnns a nessun 20 FIGURE 4 2 CONNECTION DETAILS FOR INVERTER MODELS 250KW 300KW PROVISIONED WITH INTERNAL ISOLATION TRANSFORMER TO AC GRID MP v 22 FIGURE 4 3 TYPICAL CONNECTION DETAILS FOR A TRANSFORMER LESS TL VERSIONS 350KW 400KW INVERTER TO AC GRID23 FIGURE 4 4 ELECTRICAL DIAGRAM PVI NEMA3R XXX US WITH TRANSFORMER ON nnns 25 FIGURE 4 5 ELECTRICAL DIAGRAM PVI NEMA3R XXX US TL TRANSFORMER LESS 25 FIGURE 4 6 EXAMPLE OF l V CURVES CURRENT VOLTAGE AND P V POWER VOLTAGE OF A SOLAR 26 FIGURE 5 1 GENERAL OVERVIEW OF THE PVI NEMA3R XXX US VERSIONS 250KW AND 300KW 28 FIGURE 5 2 GENERAL OVERVIEW OF THE PVI NEMA3R XXX US TL VERSIONS 350KW AND 29 FIGURE 5 3 LAYOUT OF ACBOX A FOR VERSIONS WITH TRANSFORMER 250 300KWP 30 FIGURE 5 4 LAYOUT OF ACBOX A FOR VERSIONS
32. Make sure that the grid switch is in ON po sition b Make sure there are no electrical grid problems due to the manager in this case wait for recovery a Grid switch open The LED Missing b An anomaly was de Grid is on tected on the distribu tion grid a The Software ON OFF control was The display signals enabled from the display Waiting remote b The Remote on ON OFF signal was opened on the terminal block PROBLEM POSSIBLE CAUSE SOLUTION The photovoltaic system does not provide enough power to con nect the inverter e g cloudy sky The inverter indi One or more parame Verify that the information in the PVI cates a fault on ters controlled by the STRINGCOMB manual covers this series one of the String string box is are over If necessary contact the dealer Comb the limit The inverter does a DC switch is open a Close the DC switch placed on the front of not receive DC b Interruption in the DC the inverter voltage from the line b Are the DC cables connected Is there an panels and re c The field voltage is open switch upstream mains in Energy insufficient c check the DC voltage of the field save SE a Cancel the SOFTWARE ON OFF command by setting it on Not Active Figure 13 3 b Close the signal Wait until environmental conditions are fa vorable The display signals Waiting for sun T POWEI DIE VSG hanging the Shape of Power Installation a
33. NEMA3R set a different address for each module via the front panel display of each connected 5OKWp module Chapter 814 MAKE SURE THAT THERE ARE NO RE 1 PEATED RS485 ADDRESSES IN THE SYSTEM THIS WILL CAUSE COMMU NICATION CONFLICTS 11 7 5 Final checks Close the front panels of each chassis For units with front panel AC switches take care that the handle is positioned on O OFF and insert the connecting bar and tighten the panel screws After first reconnecting associated earth cables between the panels and the inverter chassis close all the other panels T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 12 POWER UP AND PLACING IN SERVICE Before powering up the system insure all connections have been made correctly and the system is in compliance with all safety requirements In particular make sure that all voltage values are Qu 50 The following diagram is an illustration of the various functional phases of the inverter within the set limits 12 1 Operating conditions ENERGY SAVE NO SUN TIMEOUT PRESENCE SUN TRY AGAIN STAND BY CONNECTION SUN GRID FAULT NO GRID PRESENCE SUN GRID NO LIGHT qoem FAULT OR NO GRID PRESENCE RECOVERY Figure 12 1 Inverter s operation diagram AN POWEF DIE hanging the S
34. Populated Fault log An example of a populated Fault Log is shown in Figure 16 15 where the following information is provided e Fault num Progressive line number e Wake up times Progressive number of e Fault code Code assigned to the fault power start ups e Fault label Label describing the fault e Alarm num Progressive number indi e Date hour Date and time when the cating the number of alarms fault occurred e Alarm value Value of the dimensions j which generated the fault 16 4 9 Statistic Field Reset In Figure 16 16 clicking on the Stats EE The screen of Figure 16 16allows cancella tion of all stored energy statistics values prom Value RESET button will result in the following warning window appearing 2 Statistics field reset E Zi WARNING x Stats EEprom Reset Statistics EEprom Field Reset This operation will reset to 0 values the inner statistics Stored energy will also be reset Pressing the OK button in the above screen will open warning screen shown be Figure 16 16 EEprom Reset low which indicates this procedure will zero power one ASO AS Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 all the stored energy statistics and prompts as to whether the user wishes to continue or keep the existing total and partial energy values x Do you want En retain total partial energy values Yes Confirmation of the reset
35. WITHOUT TRANSFORMER 350 400 30 FIGURE 5 5 FRONT LAYOUT VIEW OF ACBOX AREA F c scssssseecccsccesseccccsscenseesccsscesseseccecsecensesscessegnssseeessegesseeeseeseees 31 FIGURE 5 6 FRONT VIEW OF TYPICAL FRAMEWORK AREA 31 FIGURE 5 7 DC CABE INBU UR PUN RN aA ac DC bn Pad uk bn xad ved mad t ea i UR Uil 32 FIGURE 5 8 AC CABLE INPUT FOR NEMA3R 250 300 US WITH TRANSFORMER 32 FIGURE 5 9 AC CABLE INPUT FOR NEMA3R 350 400 US WITHOUT TRANSFORMER eene eene enne nnne 32 FIGURE 5 10 ACBOX A SIGNAL TERMINAL BOARD brut furi barn ERAS 33 FIGURE 5 11 INPUT OUTPUT CONTROL AND ALARM SIGNALS FOR NEMA3R 250 300 US WITH TRANSFORMER 33 FIGURE 5 12 AUXILIARY AC INPUT MPrcr 34 FIGURE 5 13 INPUT OUTPUT CONTROL AND ALARM SIGNALS FOR NEMA3R 350 400 US WITHOUT 35 FIGURE 5 14 VARIOUS DEVICES nd Rap i rad eds ER epu ens a 35 FIGURE 5 15 CONTROL RELAYS AND GROUND FAULT INTERRUPTERS ssseeeeee nennen nennen nnn nnn 36 FIGURE 6 1 PVI NEMA3R 300 US MULTI MASTER SLAVE ILLUSTRATING THREE M S PAIRS eee 38 FIGURE 6 2
36. click the Add button to add the file to the Selected files field Several curves may be 48 displayed on the same Risorse del computer graph by similarly selecting z them and clicking on Add Risorse direte Nome SolaFieldScan 5N000017 20 v e n case of error a selected Tipo fie 2 Selected Files curve can be removed by C Aurora Central CVINSolarFiekdS can 5 000017 14 OK pressing the Remove but CA Central CVINSolarFieldS can 54000017 2 tst ton By clicking the Re move All button all curves Remove Al are cleared from the Se lected Files field Figure 16 21 Solar scan graphing screen 2 Aurora Central CVI SW Version 16 4 12 2 Software Version The screen of Figure 16 22 shows the ver sion of the software is being used by the system Press the button to close the screen and return to the previous screen Figure 16 22 Software version AN POWEF DIE Mull Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 17 MAINTENANCE REPAIRS This chapter describes the operations ne cessary to disconnect the device in order to carry out internal repairs in safety condi tions The type of disconnection depends on the action to be carried out If the product is to be removed from service it must first be completely disconnected from the DC and AC cables Que 620 To maintai
37. crate top and sides of from the wooden crate the crate remove the internal protection wrapping The mechanical parts that make o 2O up the base are packaged separately and positioned inside the crate These parts The packaging of the PVI NEMA3R XXX US must be assembled after the inverter and TL is shown as in Figure 9 1 To withdraw the all connection cables have been placed the inverter it is necessary to first remove in their final positions the lid of the crate and then the side pa 9 2 3 Handling of the PVI NEMAS3R XXX US TL After opening the crate the inverter may be withdrawn nels Extraction of the device from the packaging and its positioning must be performed with the help of specific equipment and accord ing to the instructions in Figure 9 2 Please keep in mind that the weight of the inverter is not uniformly distributed and therefore use extreme care when lifting it The inverter may be moved by forklift truck Since much of the weight is distributed in the upper half of the chassis it is absolutely essential to use extreme caution when mov ing It is important to lift the inverter in a way which guarantees the widest supporting base possible and which minimizes the risk of tipping over Figure 9 1 Transport crate d power one Changing the Shape of Power Installation and Operation Manual Page 49 of 132 PVI NEMA3R XXX US TL Rev 1 0 C Figure 9 2 Allowable Handling
38. gt gt button the management put W the daily energy and the total and monitoring of the chosen PVI energy produced kWh STRINGCOMB US is assigned to the cor e Rack SN The rack serial number and responding module identity number Rack No the latter being assigned to the rack and to all the It is preferable to assign the string box modules to identify the whole tower management a 50kW slave module The rack number can be changed by if present instead of the master entering a new number using the Set gt Rack Number button Before assigning the stringcomb manager it is necessary to configure the RS485 line of the string boxes by means of the stringcomb software installer see stringcomb manual T POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 93 of 132 PVI NEMA3R XXX US TL Rev 1 0 rZ Set String Comb Manager The manager module handle data communication with ALL the rack Aurora Stringlombis Remember to specity the conect number of box s Erase S Comb Manager Figure 16 7 Choice of the StringComb Manager By double clicking on the tower icon in Er From the Display menu of Figure 16 6 it is ror Reference source not found the Rack possible to open a system monitoring screen Management menu Figure 16 9 can be ac Figure 16 8 from which a very useful small cessed from which it is possible to control monitoring system can be configured
39. items a type B USB port for connection to a personal computer an SD card to save system data indispensable for display operation the ON OFF switch a reset button the supply and communication connector RS485 and a switch to configure RS485 termination user side Battery compartment Remove the screws to access the CR2032 lithium clock battery and a selec tor for the configuration of termination RS485 Figure 14 2 14 2 Front status LED signaling 4 The front of the display has multicolor status LED This LED changes color according to the status of Aurora Central PVI Monitor The indication of various operation status and their corresponding colors are LED OFF No power supply connected GREEN LED Low battery at least one power supply connected DC or USB ORANGE LED Battery is charging RED LED Low battery no power supply connected DC or USB BLUE FLASHING LED Aurora Central PVI Monitor in stand by T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 81 of 132 PVI NEMA3R XXX US TL Rev 1 0 14 3 Default screen The default screen of Aurora Central PVI Monitor is an intuitive screen that summarizes the impor tant data of the system and its operation status See Figure 14 3 pu 1035 Y ir M un h Figure 14 3 Default screen The tool bar at the top of the screen contains the following information
40. of the support base The inverter must be placed on a base which Figure 10 1 shows the dimensions of the guarantees its vertical position and ade inverter s base the base anchorage points quately support the weight are highlighted Figure 10 3 Figure 10 2 shows the cable passage Chapter 50 designed according to these criteria It must be capable of sustaining the weight The inverter must be positioned vertically of the inverter and not obliquely The unit must be abso It must be of reinforced concrete lutely stable and perfectly level It must be level The pad surface flatness must not exceed l 0 1 inch per meter 0 03 ft The pad on which the inverter rests l Dimensions of the mounting pad must be at must be provided with anchorage points to insure the inverter cannot least 1096 greater than the outside dimen the dmerter be shifted accidentally Figure 10 3 The mounting pad must contain openings for the passage of the cables conforming to the cable passage areas on the base of the inverter Leave sufficient space around the inverter to allow for easy installation and removal from the positioning surface Figure 10 4 AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 52 of 132 PVI NEMA3R XXX US TL Rev 1 0 External auxiliary power supply Figure 10 2 Cable passage areas 15mm 30mm Figure 10 3 Inverter base anch
41. operation is again prompted in the screen below Choose YES NO you really want to start statistics reset jii ow If the YES response is chosen a processing window will open below which will per form the requested reset operations 16 4 10 Inverter clock settings The screen of Figure 16 17 allows user to set the system clock i If the time is changed on a Slave mod ule the system warns the requested modification will only affect the cho sen slave module Page 102 of 132 WARNING By setting the clock of a SLAVE module the new time will be updated only on it Do you want to set the clock If the time is changed on a Master i module the system warns the re quested modification will also affect all the Slaves connected to chosen Master WARNING By setting the clock of a MASTER module the new time will be updated also every managed SLAVE module Do you want to set the clock 2 Inverter clock settings Actual time Figure 16 17 Inverter clock settings The screen of Figure 16 16 shows the cur rent system date and time to change them fill the field with the new data and press Clock set AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 103 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 11 String Comb monitoring If the system has associated Aurora string combiner b
42. shows the block diagram of AU AURORA PVI NEMA3R XXX US TL RORA PVI NEMA3R 300 US which applies to the 250kW and 300kW versions AN POWEF DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Figure 4 5 shows the block diagram of AU RORA PVI NEMA3R 400 US TL which ap plies to the 350kW and 400kW versions In both configurations the lower power 250 kW 350 kW TL models have the same block diagram but are provisioned with a one less 50 kWp module Depending on the version the inverter may or may not be provided with a galvanic iso lation transformer between input and out put Transformer less TL versions allows for a further increase in the efficiency of the conversion system and allows the user lati tude to specify a transformer which better matches a specific installation What are SOkWp MODULES The PVI inverter is based on modular design The total output power capa bility of a given inverter is obtained through use of multiple 50kWp DC AC inverter modules and are the core of AURORA PVI NEMA3R XXX US TL design All inverter modules function at high switching frequency 18 kHz are very compact and have a relatively low weight facilitating ease of main tenance The block diagram of Figure 4 4 shows the AURORA PVI NEMA3R 300 US model with its 6 independent 50KW modules connected in a Multi Master Slave mode The block diagram of Fi
43. 2 1 4 Control terminal board devices and electro mechanical devices contained in ACBOX area F mag INPUT OUTPUT CONTACTS RS485 OVR INPUT OUTPUT PROTECTION LED ALARM AND CONTACTOR AC ISOLATED 5VDC CONTROL SIGNALS GRID STATUS BONER SUPY X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 EM GIF x16x17 X18 X19 X20X21X22 X23 X24 X25 X26 X27 Co T Ppp e e Q DeDeleleDEel eDeDeDeDeDeDeDeDelea 8 MIS NIS mmc co INPUT OUTPUT HYGROSTATS RS485 AND TERMOSTAT POWER SUPPLY Qo Figure 5 11 Input Output control alarm signals for NEMA3R 250 300 US with Transformer
44. 300KW AND 350 400KW eeceeeeeeeennnn nennen nnne 62 FIGURE 11 2 CONNECTION OF THE PROTECTION EARTH CABLE 62 FIGURE 11 3 CONNECTION OF THE AC POWER CABLES VERSIONS 2350KW WITHOUT TRANSFORMER 63 FIGURE 11 4 CONNECTION OF THE AC POWER CABLES VERSIONS WITH 63 FIGURE 11 5 WIRING TERMINALS FOR CONNECTING THE AUXILIARY AC GRID FEED AND ASSOCIATED CIRCUIT BREAKER QS2 64 FIGURE 11 6 THREE GFDS PROVISIONED ON THE 250 300KWP VERSIONS cese 65 FIGURE 11 7 INTERNAL TERMINAL BLOCK ACBOX AREA FOR 250 300 05 66 FIGURE 11 8 INTERNAL TERMINAL BLOCK ACBOX AREA FOR PVI NEMA3R 350 400 US TL 66 FIGURE 11 9 REMOVABLE CLAMP R54 apr RE dd prs rnb Did ERE 67 FIGURE 12 1 INVERTER S OPERATION DIAGRAM scsssscccnssscensseccsscncusesenssseeessneuscesensssenessncuseneuessenssseeusesseusesenesseeuseneusss 69 FIGURE 13 1 DISPLAY OF THE 50KWP MIDDDLE eh Ru a AN MER RR NOR 71 FIGURE 13 2 FUNCTIONAL DIAGRAM OF THE DISPLAY MAIN MENU eene 74 FIGURE 13 3 FUNCTIONAL DIAGRAM OF THE DISPLAY SETTING MENU nennen enne nnne 75 FI
45. 5 communication line Each unit leaves the factory with the 1200hm termination disabled If multiple inverters are used in a sys Q tem only the last rack in the daisy chain connection should have its ter mination active Figure 8 1 and Figure 8 2 it is important that all other racks in the system have the termination resistor disabled The switch controlling the termina i tion resistor is located beneath the main display Figure 14 2 11 7 3 Connection for the RS485 serial communication with PVI STRINGCOMB US Each PVI NEMA3R XXX US TL inverter manage up to 12 Aurora string combiner boxes PVI STRINGCOMB US Follow the instructions of the PVI STRINGCOMB US manual for the connec tion of the RS485 serial line Also see Figure 11 7 and Table 11 2 for the position and names of the signals in the terminal block Connect the 485 2 signal to terminal X25D Connect the 485 2 signal to terminal 26D clamp Connect the return RTN or earth to the X24D Connect the screen shield wire of the shielded cable to terminal X27D After every connection pull the cable gently to make sure that it is correctly secured The 120 ohm termination is already active within the inverter Page 68 of 132 11 7 4 Setting the RS 485 communication addresses Place the QS2 switch into the ON up posi tion If the auxiliary line is live all displays will be lit If the RS485 line is connected to more than one inverter PVI
46. 50 and 300kWhp versions of PVI NEMA3R XXX US The slot position of the Master and i the Slave within a Framework is not predefined The module having the highest serial number is always set as the Master 6 1 2 Master Slave with a single Master In this configuration the entire device be haves as a large single Master Slave inver ter and therefore has a single Master and one MPPT channel see Figure 6 2 In this case however the following conditions must be fulfilled The company or person responsible for the construction of a photovoltaic system must install a DC switch upstream of the inverter input in order to break the entire photovol taic field circuit Particular attention must be given to ma neuvering the DC switches Chapter 56 1 2 1 This configuration is only available J with the transformer less versions 350kWp 400kWp of the PVI NEMA3R XXX US TL The position of the Master and the i Slave within an Inverter is not prede fined The module with the highest serial number is always designated by the system as the Master T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 38 of 132 PVI NEMA3R XXX US TL Rev 1 0 5 mon d E pL EI iL E Figure 6 2 PVI NEMA3R 400 US TL 1 Master N Slave AN POWEr one 0 hanging the Shape of Power Installation and O
47. 505 kWh EUR 4626 Corte Figure 14 5 General information on the device AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 83 of 132 PVI NEMA3R XXX US TL Rev 1 0 The screen of Figure 14 5 displays a graph of the power produced by the system throughout the course of the day and by clicking on the appropriate tab per each single inverter In addition the left side shows a summary of sensitive parameters The central black section and the bar at the top show the same information as in the default screen Clicking on the tabs to select graphs and data associated with each inverter or to the system as a whole The tabs also show permanently visible information about the status of the modules and a power meter that indicates the power exported in a graph The red area at the bottom contains the Menu button to access the menu 14 4 Mains menus From either of the previous screens click on the Menu button to access the main menu screen The menu of Aurora Central PVI Monitor is divided in several sections and each section has its own submenus for displaying setting or altering the configurations of the object 14 4 1 Statistic menu From this section Figure 14 6 it is possible to display all production data related to the system for certain intervals of time The subsections indicate the interval of time for which it is desired to dis play production figures Total Partial Today
48. 6 4 1 Single Module Pallet D wccwaensatueretinanoucenvadiesesautnvnwnkadactonrtoncteenradiitehvatawncsiosuateiowenete 91 16 4 2 Plant Configuration P 92 1643 ROCKIN EJOO ieira eae EENE EEES EE E TIAE E E EE MM AE EEE 95 Ua eee 96 16 4 5 Inverter CAC ON eM 97 16 4 6 Inverter Monitoring mE t 98 IO OC Rack n D cabal 99 100 164 9 Statistic Field REST pi rea Desa 101 16 4 10 Inverter clock settings 102 164 String Comb Monitorihg siccoranensvouoniaiscnaneiniennnansunnoxdnsnenents iauneutnonnwovinbenrnnnavanentaekiavavaatennninsmennti 103 SCAN 104 16 4 12 1 Loading and displaying saved Power Voltage 108 12 2 Software VERSION Et EUR RUN IO RR GANE NEU RENI 108 T POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 8 of 132 PVI NEMA3R XXX US TL Rev 1 0 17 MAINTENANCE REPAIRS s ccss
49. 85 connection Figure 8 3 depicts these modes Aurora Converter E RS485 232 Software PVI NEMA3R RS 485 di CHA RS 485 DATALOGGER INVERTER DISPLAYS POWEF Ong Figure 8 3 Connection modes AN 0 Changing the Shape of Power Installation and Operation Manual Page 46 of 132 PVI NEMA3R XXX US TL Rev 1 0 Where A Connection to the PVI NEMA3R XXX US TL with a PC A computer is connected to the RS485 of the inverter via use of the Aurora RS232 485 adapter The PC used must have the monitoring software installed for the PVI NEMA3R XXX US TL This is the configuration used during installation and monitoring via PC Q Chapter 815 Chapter 516 B Connection for remote control The Aurora Easy Control remote monitoring system is connected directly to the RS485 For the op eration of this system see the Aurora Easy Control user manual C Stand Alone Connection at Module 5OkW The monitoring of the PVI NEMA3R XXX US TL occurs only through the display of the 5OKWp MODULES Q Chapter 513 D Stand Alone Connection at PVI NEMA3R XXX US TL The monitoring of the PVI NEMA3R XXX US TL is via the front panel display on the front door of the inverter Q Chapter 514 Transport and storage temperature limits must be observed 9 1 Preliminary checks Q Chapter 80 The dealer has safely delivered your AURO RA to the forw
50. ADMITTED OPERATIONS AND POSITION OF THE DC SWITCHES 1 MASTER N SLAVE Inverter gt 350kW Switch Position POSSIBLE ACTIONS ON external DC DC SWITCHES PROHIBITED ACTIONS ON DC SWITCHES Disconnect After 5 minutes of the opening of the external OPEN OFF switch the switches can be operated without prob lems DC disconnecting switches o can be opened after having CLOSED turned off the relative Open switches cannot be closed in this module via remote OFF or after having disconnected the AC grid case it is absolutely necessary to first open the external disconnecting switch and wait 5 minutes before extraction wait 5 minutes after the external disconnect has been switched OFF 0 AN POWEI DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 7 PROTECTIONS 7 1 Protection for grid failure Anti Islanding When an interruption of the local distribu tion grid occurs for whatever reason safety standards require the grid connection to the inverter to be physically opened thereby insuring a safe condition on the grid which allows personnel to work on the grid with out a potential for shock hazard To avoid possible islanding operation all Aurora in verters are provisioned with an automatic anti islanding disconnection system Chapter 621 Q Chapter 622 Chapter 50 7 2 Additional protection In addition Aurora inverters are all equipped w
51. AN Power one Moll Changing Shape of Power AURORA Outdoor Photovoltaic Inverters USER MANUAL INSTALLATION and MAINTENANCE Models PVI NEMA3R 250 US PVI NEMA3R 300 US PVI NEMA3R 350 US TL PVI NEMA3R 400 US TL US indicates the country in which the product is for sale TL indicates the absence of the isolation Transformer on board versions not available T POWEI DIE VSG hanging the Shape of Power Mel Changing Shape of Power IMPORTANT SAFETY INSTRUCTIONS A SAVE THESE INSTRUCTIONS o s This manual contains important instructions for models indicated in front of Report that shall be followed during installation and maintenance of the inverter AN POWEI DIE hanging the Shape of Power Installation and Operation Manual Page 3 of 132 PVI NEMA3R XXX US TL Rev 1 0 LEGEND Paragraphs marked with this symbol indi cate the necessity of using adequate protec tion prior to hazardous operations e g use of insulating gloves for work with voltages up to 1000 VDC use of goggles etc Marks paragraph references contain ing important safety information and warnings which must always be res pected Indicates the current paragraph is continued on next page Indicates the end of a paragraph Texts marked with this symbol indicate pro Symbols of this type refer to warn visions which if not met
52. AURORA inverters without the use of rotating elements but only by means of static electronic devices When used in parallel with the grid the al ternating current output from the inverter flows directly through the isolation trans former where required into the industrial distribution circuit connected in turn to the public distribution grid If the supply from the photovoltaic field is low the amount of energy necessary to guarantee the normal operation of the con nected appliances is taken from the public distribution grid However if the opposite occurs i e a surplus of energy is produced it is directly introduced in the grid thus be coming available for other users In compliance with prevailing local i codes and regulations in force the energy produced can be sold to the distribution grid or credited against future consumption thus producing energy Savings 3 2 Fundamental elements of the photovoltaic field Strings and Arrays In order to significantly reduce installation costs of the photovoltaic field especially related to the wiring problem on the inver ter DC side and the subsequent distribution on the AC side the STRING technology was developed A photovoltaic PANEL is made up of many photovoltaic cells mounted on the same support base A STRING is made up of a certain number of panels connected in series An ARRAY is made up of one or more strings connected in parallel fN PO
53. ENING TORQUE FOR CONNECTORS The table below report the tightening torque for pressure wire connectors installed on the inver ter Table 24 1 Tightening torque for connectors CONNECTORs AWG range Torque N m range AUXILIARY Connectors Connectors 1244 4 1 5 1 AUXILIARY Connectors Vol 12 5 1 tage selection SIGNAL Connectors 20 12 0 4 0 6 25 ADJUSTABLE TRIP POINTS The table below lists the adjustable trip points of the inverter 208Vac Table 25 1 Default values for voltage and frequency limits for utility interaction DEFAULT VALUES DISPLAY 2 Grid Voltage V Frequency Hz Variable 19 read only 106008 1 08 016 16 m L E POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 131 of 132 PVI NEMA3R XXX US TL Rev 1 0 Table 25 2 Voltage and frequency limits for utility interaction adjustable trip points Adjustable Trip points Grid Voltage V DISPLAY Variable lt 0 51 19 read only IV 106 08 0 51 V lt Vuv 106 08 lt V lt Vuv Vuv is adjustable from 45 0 55 Vhor to 0 88 114 4 to 183 04 46 43 44 Vov lt V lt 1 19 Vo Vov lt V lt 247 5 Vov is adjustable from 1 10 Vio to 1 18 V 228 8 to 245 44 1 19 Vaor lt V 17 read only 247 5 lt V
54. ERVICE available on website Power one www power one com Questions criticisms and suggestions are always welcome REVISION TABLE REVISION Author Date Document A Morucci oe S Soldani n S Soldani 90 05 40 Approved by D Nocentini D Nocentini Description of Modification First Issue For New Design POWER ONE Complete or partial reproduction of this document by any means whatsoever is strictly forbidden without prior authorization of Power One T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 5 of 132 PVI NEMA3R XXX US TL Rev 1 0 TABLE OF CONTENTS 1 HOW TO USE AND READ THE MANUAL iiosss resa abo expe RR P Ep a REC Pa R Een Ebra EP C EK SEK REP RE EP EN VIE KR NEAR U MENU UK EK UU UNE 1 1 DISPOSAL OF WASTE eccrine eerie EUER PR dna TUEDRI ORI DON 1 2 SYMBOLS USED WITH THE PRODUCT saisit aa RER AGUA EI RED GUTER IER ad ED A E Rn RN EN EVA A RE FG ARDEN RC 1 3 LABELS USED WITH THE PRODI T 1 4 DOCUMENTS PROVIDED WITH THE DEVICE cssscousccouscouscnscencesscnsecusecssenscsenscescersoerecuscossenssensssseursscerecuseousenasens 2 IMPORTANT SAFETY INFORMATION cccccccccccccccccccccccccccccccccccccccccccccceccccccccccccccccceccccccccccccccccceccceccecs 2 1 RPI Fe AR PREP ia erum Er UENIRE 3 GENERAL INFORMATION AND FEATURES OF A PHOTOVOLTAIC
55. G THE DEALER QUESTIONNAIRE eene nennen enne nnn nnne ness nnn nns 122 21 2 1 Problems on the SEHHOCORIDS queen Rage tin ed ame bg aria pai Ee RF de RR RU 122 21 2 2 Problems on the PVI NEMA3R XXX US TL cccssseseccccccccceeeeceeccnesseccseesueeecceeseesueeeeeesseeaueecessssueness 122 22 ERROR MESSAGES AND EFAEEEDEAFDERER DERI RAE QR DF ARP PIE TREE 123 22 1 INSISTE Rem 123 DIN NM ERROR P rftv EQ M 123 23 TECHNICAL DATA go c d M 125 23 1 TECHNICAL DATA n amet FUR QULA a 125 24 TIGHTENING TORQUE FOR CONNECTORS DM UMEN OPEP SE MEE PUN UP CA ENNESNEF DENM MV EU bDNE 130 25 ADJUSTABLE TRIP POINTS DID EU SPEPENCPU UE 130 26 CERTIFICATE OF CONFORIVIITY RATEN PE Va ER Ck OFF REN VERE DRYM FERNER ERE SEN VEA REN EV OE 132 T POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 9 of 132 PVI NEMA3R XXX US TL Rev 1 0 INDEX OF FIGURES FIGURE 1 1 UL MARK AND CAUTION AND DANGER LABELS ness n a anres aser enn 13
56. GURE 13 4 FUNCTIONAL DIAGRAM OF THE DISPLAY NAVIGATION OF THE INFORMATION MENU een 76 FIGURE 13 5 FUNCTIONAL DIAGRAM OF THE DISPLAY NAVIGATION OF THE STATISTICS MENU ccseeeen ene 76 FIGURE 14 1 DISPLAY TOUCH SCREEN OF THE NEMAGR 00 scccssescessccccescssucersescusssesscaecusecesscaesesnacacerseceussserecavsusssereus 79 FIGURE 14 2 INTERACTIVE DISPLAY cotidie mh paw twice a cesa 80 FIGURE 14 3 bas URS du or DI NUM ict MORRISON UEM od Eau uat 81 FIGURE 14 4 50 KW MODULES INFORMATION CER ERE UE 82 FIGURE 14 5 GENERAL INFORMATION ON THE DEVICE eb Deb Rice divite DR Een P RIDERE REV 82 FIGURE 14 6 STATISTIC MENU 83 FIGURE 14 7 SETTINGS MENU nei Eb pP DPAREANQ E HARD MED EA EEEE E EEEN OE 84 FIGURE 14 8 INFORMATION AMIENIUC ei sette inb bU DV ER ac E ed LR TAM pd ER GC AR bata CR roc 85 FIGURE 17 1 POSITION OF THE AIR FILTER PANELS rttr testte ese essen esee eser enun 110 FIGURE 17 2 UPPER FILTER or ek t oi eek n pel kc t ot e kr eek rk 111 FIGURE T 7 3 FRONTAL FIER PANEL caduca Ri M ODE UAR 112 FIGURE 17 4 FRAMEWORK COVER PANELS TO ACCESS DC AND AC FUSES 113 FIGURE 17 5 GFD
57. Harmonics THD T B D Inverter Switching Frequency KHz T B D AC side overvoltage protection Yes Yes Conversion Efficiency Peak Efficiency 96 Vin 330 CEC Efficiency 96 Environmental Parameters Environmental Protection Degree T B D T B D T B D T B D Nema3R 25 C 60 C with Pout de rating 25 C 60 C Nema3R 25 C 60 C with Pout derating 25 C 60 C Operating Temperature Range Storage Temperature Relative Humidity non condensing General Data Auxiliary Voltages Consumption W T B D T B D Night time losses W T B D T B D 1x RS485 1x RS485 dedi Local Communication cated to PVI STRINGCOMB 1x RS485 1x RS485 dedicat US ed to PVI STRINGCOMB US POWET 0ne hanging the Shape of Power 9596 Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Remote Communication optional T B D User Interface Touch screen display Mechanical Characteristics ble lug T B D ble lug T B D lug T B D Dimensions WxHxD mm T B D Overall Weight Kg T B D 50kW module Weight kg 70 Required Ambient Air Cooling Flow m h T B D POWEI DIE VSG hanging the Shape of Power Page 129 of 132 T B D Touch screen display 4 UJ J 4 UJ J T B D T B D T B D N 99 5 Installation and Operation Manual Page 130 of 132 PVI NEMA3R XXX US TL Rev 1 0 24 TIGHT
58. IGNALS IN THE TERMINAL BLOCK en Er cc en cc 67 TABLE 13 1 MEANING OF THE DISPLAY LEDS avait su dva quaa rds e n iva dnd dedu dbi adco dd 73 TABLE 17 1 TABLE OF ROUTINE MIAINTENANDCE iuis iiri ento o EDU Een RR M EXE Een RAN A V 110 TABLE 17 2 TABLE OF VISUAL AND SCREW CHECKS ccssccossccuscnsscnscsscerscuseouscnsscenssensssscerscuscousenssensesseersscens 113 fN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 11 of 132 PVI NEMA3R XXX US TL Rev 1 0 TABLE 2 1 TROUBLESHOOTING 120 TABLE 21 1 TABLE OF ERROR MESSAGES AND CODES Oa EH Ed ORE MEER or a ERR E TER 123 TABLE 22 1 DATA SHEET PVI NEMA3R 250 300 US 126 TABLE 22 2 DATA SHEET PVI NEMA3R 350 400 US TL 128 TABLE 23 1 TIGHTENING TORQUE FOR CONNECTORS dudo qe acd dandi di deaur eura 130 TABLE 24 1 DEFAULT VALUES FOR VOLTAGE AND FREQUENCY LIMITS FOR UTILITY 130 TABLE 24 2 VOLTAGE AND FREQUENCY LIMITS FOR UTILITY INTERACTION ADJUSTABLE TRIP 131 POWEI DIE Changing the Shape of Power Installation and Ope
59. MA3R XXX US TL into the computer and launch the setup exe program then follow the in structions on the screen In conclusion the icon Aurora CENTRAL The next chapter shows how to use the PVI CVI will appear on the computer Desktop NEMA3R XXX US TL configuration and and in the position monitoring program Start 2 Programs Hi i Aurora CENTRAL CVI 1 Future software versions could have a different icon AN POWEF DIE QS Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 88 of 132 16 MONITORING AND CONFIGURATION INTERFACE 16 1 Conventions used In this chapter the following conventions are used in the text BUTTON Indicates a button selection list Indicates a list for selection Menu name Indicates the name of a menu window name 16 1 1 Rack and Modules Hereinafter the single 50kWp boxes will be indicated with Modules The name Rack indicates a system com posed of several modules Each Rack can have up to 6 Modules In this manual the name Tower Rack have the same meaning 16 2 Access levels The software allows for two access level Standard User allows access only to mon itoring functions Some screens of the pro gram have hidden and or limited functions Advanced Technical allows access to monitoring and other technical functions All program functions are enabled except for some areas which ar
60. ND FEATURES OF A PHOTOVOLTAIC SYSTEM The purpose of this chapter is to provide the user of AURORA PVI NEMA3R XXX US TL general information concerning the photovoltaic systems that transform solar energy into electrical ener gy usable in the distribution grid 3 1 Photovoltaic energy In the process of energy conversion for many years industrial companies great energy consumers have been experiment ing with forms of energy saving and lower emission of pollutants through a prudent and rational use of known resources and the research of new forms of clean and inex haustible energy Renewable energy sources provide a major contribution to solving the problem In this context the exploitation of solar energy to generate electricity photovoltaic is becom ing increasingly important worldwide Photovoltaic energy represents an enorm ous advantage in terms of environmental protection because the solar radiation we receive from the sun is directly converted into electricity without any combustion process and without the production of na ture polluting waste Photovoltaic panels convert the energy ra diated by the sun into electrical energy of DC type by means of a photovoltaic field also called a PV generator In order to supply the distribution grid so this electricity can be used it should be converted into al ternating current AC This conversion known as DC to AC conversion is carried out efficiently by the
61. OFF E035 Remoteoff 014 Jj Zeropowerexpoted Griddf dt 5 Jjdf dnetwok SS DEN Switch Open WO16 Surge Protector Device SPD failure car SPD Switch tridge to be replaced Open threshold FAN Stuck EE E038 Central or right fan is blocked DC Switch Open EE E039 DC disconnecting switch open JboxFail W017 One or more StringCombs have commu nicated a problem TESI mE E040 AC disconnection switch open Open h itch Relay AC E041 nternal AC contactor has not switched over Bulk UV E042 Voltage of capacitors below minimum threshold i Auto exclusion E043 Self exclusion of module due to repeated faults RISO E025 Isolation resistance below minimum threshold POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 125 of 132 PVI NEMA3R XXX US TL Rev 1 0 23 TECHNICAL DATA 23 1 Technical data tables The following tables show the characteristics of the PVI NEMA3R XXX US TL POWEI DIE hanging the Shape of Power Installation and Operation Manual Page 126 of 132 PVI NEMA3R XXX US TL Rev 1 0 Table 23 1 Data Sheet PVI NEMA3R 250 300 US Characteristics PVI NEMA3R 250 US PVI NEMA3R 300 US Input Parameters Maximum recommended PV 275 330 power KWp Absolute maximum input voltage 600 Vdc MPPT input voltage range Vdc 320 600 320 600 Number of MPPT Mas
62. R DC Devices Qu 17 1 4 2 Check of the AC fuses Inspection of the AC line fuses can be com pleted visually as they may be viewed through the appropriate inspection window on the associated framework see Figure 17 4 As such it isn t necessary to open the AC panel or switch off the inverter The state of the fuse is signaled by a small lever above each fuse when the fuse is in tact the lever is horizontal and attached to the fuse box if the fuse is blown the lever will move to a vertical position 17 1 4 3 Check of the DC fuses If the inverter fails to detect sunlight and always indicate that there is no sun a likely reason could be a blown DC fuse To inspect the DC fuses it is not necessary to open the AC panel and switch off the in Page 116 of 132 verter as the fuses can be checked visually through the associated framework window per Figure 17 4 17 1 5 Check of warning labels and signaling devices Check that all labels bearing warnings or indications are intact and well bonded to the chassis of the inverter In particular the danger labels should always be clearly visi ble If necessary contact Power One 17 2 Replacement of faulty battery This component must be replaced only by a qualified technician Each 50kWp module provisioned in the in verter has installed a CR203 type2 Lithium buffer
63. RE 10 4 SAFETY DISTANCES REQUIRED AROUND THE INVERTER ccescsccecceecccnceecenccseceuceseeeuccseeeuceseceseeeuceseeeeeeeeeeeeeeees 53 FIGURE 10 5 STEP ACCESS AREA sess saree sac hiner rattan a HV RO dd c te toned tools V inda ti 54 FIGURE 10 6 AIRFLOW PATH THROUGH THE INVERTER eese eene nnna nnn ssa annes assise ares sa aate sa a ness ane nan 55 FIGURE 10 7 ACCESS PANELS TO BE REMOVED FOR 1 250 300 05 56 FIGURE 10 8 PANELS TO BE REMOVED FOR 350 400 05 57 FIGURE 10 9 COMPOSITION OF THE ACBOX A FOR PVI NEMA3R 250 300 US cccccscccceceeececececeeeeeeeeeeeseeeeeeeseeees 57 FIGURE 10 10 COMPOSITION OF THE ACBOX A FOR 350 400 05 57 FIGURE 10 11 COMPOSITION OF THE ACBOX F ssssseceecccsecessecsccsscesseccccsecessececsccsueenseeseesseensseseessegnseseeseeeseganesseees 57 T POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 10 of 132 PVI NEMA3R XXX US TL Rev 1 0 FIGURE 10 12 CABLE OUTPUT UNDER THE PVI NEMA3R 250 300 US ccsscccccccceeesssecccceeeeseceseeeeeesesessessueenseeseeeuees 58 FIGURE 10 13 CABLE OUTPUT UNDER THE INVERTER PVI NEMA3R 350 400 US TL eene 59 FIGURE 11 1 DC CABLE CONNECTION 250
64. Techniques Figure 9 2 illustrates the recommended handling procedures for PVI NEMA3R XXX US TL In fig ure A it is advisable to use the framework shown as pivot to keep the lifting chains in a vertical position in relation with the eyebolts Figures B and C illustrate alternative lifting procedures re spectively for models 250 300 kW with Transformer whose center of gravity is located in the transformer area shown in figure B and for models 350 400 kW without Transformer Figure C 4 PowWEer one Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 10 INSTALLATION Page 50 of 132 The electrical installation of the PVI NEMA3R XXX US TL must be carried out in com pliance with the prevailing codes and regulations All cables used and connected to the device or under field voltage must comply with the minimum insulation rating of 600Vdc In case the low voltage cables are carried together with the wires from the photovoltaic field the installer must ensure that the main electrical insulation condi tions are guaranteed 10 1 Installation location The physical environmental and positioning situation and the position may affect proper functioning of the PVI NEMA3R XXX US TL The following warnings and recommenda tions are related to the choice of location are being provided with regard to the posi tion of the inverter Do not install the device in a position wh
65. WEF DIE hanging the Shape of Power Installation and Operation Manual Page 19 of 132 PVI NEMA3R XXX US TL Rev 1 0 Large photovoltaic systems may be made up By maximizing the number of panels in each of several arrays connected to one or more string the cost and complexity of the con AURORA inverters nection systems of the plant may be re duced PV Cell PV String Figure 3 1 Array Composition In no case should the voltage of the string exceed the maximum permissible voltage in order to avoid damage to the device Qe 50 The DC current value of each connected array must also be within the limit values of the inverter located downstream Decisions on the exact structure of a given photovoltaic system depend on a number of factors and considerations to be made such as the type of panels the available space the future location of the system long term energy production targets etc Visit the Power One website www power one com to access an available configuration tool that can help with the correct sizing of the photovoltaic system 4 AN POWEF Ie Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 4 SCOPE AND GENERAL DESCRIPTION OF THE PRODUCT PVP ppp Figure 4 1 PVI NEMA3R XXX US TL Series AN POWEF IIe Changing the Shape of Power Page 20 of 132 i A s i d Power
66. XX US TL Rev 1 0 16 4 6 Inverter Monitoring The screen of Figure 16 11 allows monitoring a single module at the rack level Inverter Monitoring Module Rack ID Monitoring Statistics mg Comb Calbration Venables Commands SolarField Info Figure 16 11 Inverter Monitoring Area Desciptonofitems 00 Fans shows the rotation speed of the module fans Temperatures shows the temperature of the microprocessor MCU of the power supplier P Feed of the dissipater H sink and of the framework Aux 3 The Aux2 indication is not used AC Side indicates the voltages currents frequency of the three phase triad and the power exported from the module indicates state of switches on inverter closed switches are indicated in green and open switches in red e ON OFF Remote ON OFF e DC DC switch position e AC AC switch position e SPD Indication of the OVR DC state AN POWEr one Changing the Shape of Power Installation and Operation Manual Page 99 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 7 Rack Monitoring This screen of Figure 16 12 allows monitoring of all modules that are part of the rack Zi Rack Monitoring Rack Monitoring DataLogger Power Limit Rackparameters Language Info 7 SELECT gt gt SELECT 1 SELECT gt gt SELECT gt gt SELECT gt gt Ed SELECT gt S ON OFF DC Figure 16 12 Rack Monitoring e DC Side in
67. able Input for NEMA3R 250 300 US with Transformer 5 2 1 2 Version without isolation Transformer For models without the Transformer the ACBOX is shown in Figure 5 2 area A and contains only the AC connection bus bars Figure 5 9 TBD Figure 5 9 AC Cable Input for NEMA3R 350 400 US without Transformer AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 33 of 132 PVI NEMA3R XXX US TL Rev 1 0 5 2 1 3 Control devices and electro mechanical parts contained in the ACBOX area A Figure 5 10 Illustrates the line up of DIN rail mounted electro mechanical devices contained in the Transformer compartment This area contains the overcurrent devices for the AC grid and its re spective fuses the control thermostat and a hygrostat for the compartment in which the Trans former is located I S FUSE OVR 1 I n Y Y TERMOSTAT amp GRID l areroj J HYGROSTAT e 53595 i m i Li 1 lt i I 1 I I uc Figure 5 10 ACBOX A signal terminal board 5
68. al procedure and insert it in Aurora Central PVI Monitor again Navigate through the menu until you find the firmware update section Click on Next Aurora Central PVI Monitor will start the update procedure Once the new software has been read and loaded the display will prompt for a selection from this screen decide whether to install the new firmware return to the previous ver sion or cancel the procedure and maintain the current firmware Wait until Aurora Central PVI Monitor finishes the installation operations Once the in stallation process has concluded the default screen will automatically be displayed T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 87 of 132 PVI NEMA3R XXX US TL Rev 1 0 15 BEFORE USING THE SOFTWARE The software produced for the PVI 5 as already described the serial NEMA3R XXX US TL allows setting the t 7 nission standard of the PVI NEMA3R transmission parameters e g baud rate XXX US TL is the RS485 while the COM and for control e g power limit and for port of the computer is used on the RS232 monitoring the electrical dimensions e g standard an Aurora RS232 485 adapter values of the phase voltages must be used Aurora 232 485 Converter able to communicate with PVI N 7 3R XXX US TL the computer used Chapter 88 must have a free COM serial port 15 1 Software installation Place the CD provided with the PVI NE
69. all of the modules if the problem detected coincides with one POWER ON of the cases described ALARM If there are no doubts and if none of the The red LED ALARM is always on ON solutions is of help you must contact your The green LED POWER ON flashes dealer The module concerned or all the modules disconnect from the grid Table 21 1 Troubleshooting PROBLEM FAQ POSSIBLE CAUSE SOLUTION Make sure that a There are no interruptions of the line b The termination must be enabled only on The serial communi a Interrupted line the last one of the chain cation of one or b Wrong termination B diu Chapter 88 Chapter 11 7 2 more Modules doe Repeated addresse a c hep There should not be similar addresses in not work d Faulty card the whole chain Bose 611 7 4 d Contact the dealer The communication Use the default 9600 baud rate configuration seems to be working The configuration but all the modules baud rate of the Mod are not visible from ules is different from the scanning pro that of the adapters gram T POWEF DIE 0 hanging the Shape of Power Installation and Operation Manual Page 121 of 132 PVI NEMA3R XXX US TL Rev 1 0 PROBLEM FAQ POSSIBLE CAUSE SOLUTION Signaling on the Display Faulty SPD OVR The SPD hasintervened Replace the damaged cartridge s for overvoltage and Disch must replaced Chapter 17 1 4 1 a
70. allation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 13 5 7 1 States This menu allows an OK NOT OK verification of the state of all parameters listed below within the previously selected StringCombs e Fuses State of fuses e Temp Temperature of the box e Volt Voltage of the field e Balance Unbalanced string currents e Current String current e Power StringComb supply e Comm Communication e Cal Current calibration 13 5 7 2 Fuses Selection of this item allows verification of the state of the single fuse es of the StringComb selected previously The result can be OK or NOT OK e F1 State of fuse F1 e F20 State of fuse F20 13 5 7 3 Currents Selection of this item allows verification of the state of the currents of the StringComb selected previously These can be OK or NOT OK e 1 State of current 11 e 120 State of current 120 13 6 Statistics Selecting the STATISTICS menu will display the submenu shown in Figure 13 5 13 6 1 Timing Selection of this item will display the follow ing information Life Total operating time Grid Hours of connection to the grid Page 78 of 132 13 6 2 N Conn Number of Connections Selection of this item will display the num ber of connections with the grid 13 6 3 E Tot Selection of this item will display the follow ing information E Total energy produced Val Economic gain 13 6 4 Partial Selection of t
71. anging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 61 of 132 11 1 Preliminary operations for the electrical connection This chapter provides details of each single operation to be carried out during the connection phase of the installation The instructions provided in this chapter and in its sub chapters and all the safety warnings should be read carefully and followed step by step with these instructions could create a situation of danger for the opera tor installer and damage the ap pliance Any operation which does not comply nect the photovoltaic field before making the connection to the inverter by means of the upstream DC switch es since there could be hazardous voltages present capable of causing electrocution and or a fire hazard j It is extremely important to discon n Do not exceed the nominal voltage and current specifications when de signing the PV system In particular always keep in mind the following with regard to the photovoltaic sys tem Maximum array DC voltage input to each of the MPPT circuits found under any condi tions Maximum array DC current input to each of the MPPT circuits found under any condi tions 50 11 2 Connection of the DC cables from the photovoltaic field After having carefully read and understood the premises of the preceding paragraphs the cables from the photovoltaic field can be conn
72. arding agent in perfect condi o tion The forwarding agent by accepting the package assumes responsibility until deli very In spite of the care taken by the for warding agent the packaging and its con tents may be damaged during transport Handling and storage of the device before installation require particular care It is therefore necessary to follow the instruc tions below 9 STORAGE AND HANDLING Since there are electronic circuits and elec trical connectors in the inverter particular care must be exercised to avoid mechanical shock from drops and high vibration condi tions which could later endanger the correct functioning of the inverter and or compro mise the safety of persons during installa tion and or operation AN POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 It is important before installation to check that the device is undamaged Any anoma lies in packaging and or the presence of loose objects inside the unit must be re ported to the dealer The customer should carry out the following checks e Examine the shipping container for signs of visible damage holes cracks and any other sign of possible damage inside e Describe in writing any damage or lack of documents received if possible sup porting photographs are encouraged This documentation must be under signed by the carrier with his full na
73. battery which functions to keep the internal clock powered for statistical calcula tions If the battery fails the system will still i function however energy data will not be correctly recorded until the battery is replaced To access the battery the module of con cern must be withdrawn from its seat If the LCD displays a Battery Fail fault con tact your dealer for maintenance 18 AN POWEI DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 117 of 132 19 SWITCHING OFF AND DISCONNECTING THE SYSTEM When it is necessary to maintain exposed normally energized parts it is not sufficient to turn the grid switch AC and DC PV field switches to OFF 0 position because the input cables are always under voltage Turn off and disconnect the inverter 619 MANDATORY UPSTREAM DISCONNECTION 19 1 Disconnection from the AC grid The procedure for disconnecting AURORA from the grid is the following 1 It is advisable to set all Master modules of the rack on the REMOTE OFF posi tion by means of the display In this way the power fed into the grid is practically zero and the AC switch can be opened in the absence of any load 2 Turn the AC switch to the OFF 0 posi tion i e turn it counter clockwise a The inverter disconnects from the AC grid and therefore it no longer supplies power b All the displays
74. ccsssccsscccssccnscccesccnscecesccuscensscsussenssececsenscesscecscesesceussesesceucssesscssecsens 109 17 1 ROUTINE MAINTENANCE 110 17 1 1 dore MEER 110 17 1 1 1 Upper input air filtefsS au EROR UP EUN RETE Laue GUAE 111 17 1 1 2 Door mounted air input filters a coiwktas eR HERE FRNUFIESFEREPUERESNRQUEEEUXMEPHEREVREEEEREEEGE Hot IQUPERENMRUEERECHEPUE BEER EbUERIUEQIXEERUA OP RH ER E 111 17 1 2 Visual and Bus bur inspections usce een see tetendit ae eroe elena ruled rU ER 112 17 1 3 Checks or the ACBOX GCG a piso puse RE du px obtenta UI Cip pet GONE DN EDI EH I GRUND ME 114 17 1 3 1 GFD fuse ACTIO ccm 114 TITIO EB EOD OL nasa ub NADA E 114 17 1 3 3 Check of the power switch ODelQtiQhi iive seea reet repu e ne FE nre aS etn bep EO rPU P Eee Reo reel E eU 115 17 13 24 OVR AC device check EE ARUM EF TEN KE VEA V VE 115 17 1 4 Checks on the TTE 115 17 1 4 1 VR OC Ge Vice COG m 115 TOTAL Check of the AC TIS oeicenpx ut PEDEM ET UE RU EEUU 116 17 1 4 3 Check OF the fUSES Mr 116 17 1 5 Check of warning labels and signa
75. could result in ings in the same paragraph or oth death or serious injury to the person or per erwise to the page indicated They sons involved contain information on personal safety and tips on how to reduce the risk of accidents and injuries Refers to a warning on possible damage contained in the same para Texts marked with this symbol indicate pro graph or on the page indicated visions which if not met could result in Texts marked with this symbol con slight or serious injury to the person or per tain indications concerning environ sons involved mental protection Texts marked with this symbol con sights Texts marked with this symbol indicate pro visions which if not met could result in po tential damage or malfunction of the device and things in general N POWEF DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 THANK YOU FOR YOUR TRUST Page 4 of 132 The AURORA Power One Inverter you have purchased is a device containing the latest technolo gies Before using this device for the first time read these user instructions in order to fully and quickly learn the commands and functions as well as the potential dangers for you and for others and how to avoid them For further information about the device or in case of failure to provide part of the documentation that makes up the manual contact CUSTOMER S
76. ction of the AC power cables versions lt 300kW with Transformer AN POWEF DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 11 5 Connection of auxiliary energy supply Auxiliary power supply for the inverter is obtained directly from the power grid via a direct internal connection The absence of the power grid will therefore result in the inverter fully switching itself off The auxiliary power for all of the NEMA3R inverters is 3 wire PE at the same vol tage level as the main AC grid connection and can be fed internally from the main AC grid connection or via an external branch circuit as required If the auxiliary power supply needs to be fed from a separate external feed follow these instructions Page 64 of 132 e Disconnect the connected highlighted in Figure 11 5 e Now remove this cable connected to the terminal board e Connect the cable to the terminal boards indicated in Figure 11 5 e Leave QS2 switch in the OFF position T T down he QS2 switch has two functions e disconnect the auxiliary voltage e disconnect the system in the case of breakdown of the OVR AC devices his switch is always accessible e o o OVR OVR OVR OVR
77. e moment of installation Describe the atmospheric conditions at the time of occurrence of the fault o maximum array voltage and current values o number of array strings o number of panels for each string T POWEI DIE 0 hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 22 ERROR MESSAGES AND CODES The state of the system is indicated by a warning sign Warning or an error sign Er ror displayed on the LCD display The Table 22 1 which follows briefly de scribes the two types of signals that may appear 22 1 Warning These indicate the state of AURORA there fore they are not caused by a fault and do not imply the need for any action lack of grid sun etc These will cease to be dis played as soon as normal conditions will be restored Warnings are indicated in the ta ble below by a W 22 2 Error Indicate a possible fault of the apparatus or of the elements connected to it Also in this case the signal will disappear as soon as the causes are identified Page 123 of 132 The occurrence of an error signal generally implies an intervention that is maintained by Aurora as much as possible or it will provide appropriate indications in order to assist the person working on the device or plant to perform the necessary maintenance Errors are indicated in the table below by an E After the connection if the inverter receives incor
78. e used exclusively by the factory he password for advanced access is 1 aurora 1 The password cannot be changed always use lower case T POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 89 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 3 Diagram of the monitoring software The software map of Figure 16 1 provides a layout of the program structure of the monitoring program The following paragraphs will describe in detail the individual blocks of the diagram Single module Selezione Standard amp Interfaccia i advanced advanced MENU winnow WINDOWS Standard or Advanced Standard or Advanced Single Module Plant Configuration String Comb Manager Rack Interface Monitoring Inverter Monitoring Fault Log ID Inverter Rack Rack c Interface Identification Module Interface Software Version Software License Statistic String Comb String Comb Solar Field Monitoring Scan Figure 16 1 Software Map of Monitoring Functions Statistic Field Reset Inverter clock setting T POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0
79. ecesceccscesceccecesceccecescescecescescesseesce 79 14 1 HOW THE DISPLAY FUNCTIONS ttt ttt ERR TERR RM n E ERR RUE 79 14 2 FRONT STATUS LED SIGNALING d 80 3 DEFAULT SCREEN H 81 14 4 MAINS IVE NIU D 83 14 4 1 Statisti Men AEEA 83 aU 2 CHI e 84 Tu We ORDRE MTT oe Tn eee ern Tre E RARIOR NM rn tenet mre mtn treet A Terr EHE 85 14 5 FIRMWARE UPDATE pia de ptus in uneven epi Re bun 86 15 BEFORE USING THE SOFTWARE iini bn rcd blc ann tel dn P acto a ol ie ii 87 15 1 SOFTWARE INSTALLATION Disp Obs ciety dea viet EROR ERU UEM QU NUR XN NOR REN salen SUM Can UNS PUR POUR 87 16 MONITORING AND CONFIGURATION INTERFACE cscsccscscsccscsccccscsccccscsccccsceccccsceccscsceccscsceseccsceceeces 88 16 1 CONVENTIONS USED m P 88 16 1 1 ROCK ONG ELI cO 88 N ACCESS LEVELS aerae M E E E EE E E E E E E T 88 16 3 DIAGRAM OF THE MONITORING SOFTWARE cute RN RADI IERI V b RIF RR VER UR 89 16 4 USE OF THE MONITORING PROGRAMS impo OX RR A RAUM CRI Dm A VERRE ANA ERN DRE Ra DPA ARRA 90 1
80. ected Q Chapter 56 Chapter 510 2 4 As the configuration is made before 1 delivering the inverter only the DC cables must be connected Follow the directions in the points and of the following figures e Locate the DC cables from the photovol taic field e Connect the cables in the input terminal block Figure 11 1 respecting the cor rect polarities e Follow the numbering of the input bars according to the numbering of modules 50 kW Qus 85 2 1 A After the cable passage it is impor tant to make sure that the open 1 holes are closed e g by means of _ expanded foam This operation guarantees that no animals or dust can access the interior T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 62 of 132 PVI NEMA3R XXX US TL Rev 1 0 654321 12345678 8765432 am me me memme ern D T INPUT DC CABLE INPUT DC CABLE Figure 11 1 DC Cable connection 250 300kW and 350 400kW 11 3 Connection of the protection earth cable PE NEMAGR 300 NEMA3R 350 TL For the safety of the system the ground connection of the system must be sufficient ly sized The ground connection must be es tablished before initial switch on of the sys tem Table 11 1 displays the minimum sec tions advised for use The person or com pan
81. ed to other similar points It is important to verify there is no change in color over time at the anchorage points around the screws and in the insulation Any non uniform anomalous color ing is indicative of thermal stress condition and may lead possible mal functioning of the inverter In such case contact your dealer who will assess whether a replacement is needed Also check for any corroded spots When checks have been completed replace the panels and the associated earth connections cor rectly lt AN POWEF IIe Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 17 1 3 Checks of the ACBOX area The following checks are related to the cool ing system and the protection devices posi tioned in the ACBOX area and it is therefore necessary to remove the front panel G and H indicated in Figure 10 7 10 2 4 Before removing any safety panels carry out the operations to switch off the inver ter DISCONNECT the AC voltage and wait at least 5 minutes before removing Replace the panel after the checks have been completed 17 1 3 1 GFD fuse check A lit LED indicator on any of the GFDs per Figure 17 5 signals the pres ence of a ground fault and the fuse A in the adjacent holder must be re placed Open the fuse compartment and remove the tripped fuse Replace it with an equiva lent fuse
82. ere it is directly exposed to the rays of sun ex cessive temperatures could reduce inverter performance If possible install the inverter in a position protected from sun as posi tioning in direct sunlight could in some cases negatively affect inverter performance due to excessive internal temperatures While the design limits the effects of airborne water and dust the quality and quantity of the air humidity and dust can affect proper functioning and long term op eration of the inverter In the design phase of the plant data con cerning environmental and ventilation con ditions should be considered Q Chapter 50 The inverter must be located in a flame proof area there must be no flammable ma terial within the vicinity AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 51 of 132 PVI NEMA3R XXX US TL Rev 1 0 Hardware maintenance of the inverter is carried out mainly from the front Do not place the PVI NEMA3R XXX US TL a near inhabited areas or in places with diffi BOX area as shown in Figure 5 1 and cult access Any fire escape routes must al Figure 5 2 however alee p allow access on all sides in order to ways be left open THE INSTALLATION LOCATION MUST BE AC facilitate any possible servicing need CESSIBLE AT ANY GIVEN TIME BY AUTHO 44 RIZED PERSONNEL 10 2 Positioning in the selected place and characteristics
83. ervice with a dedicat ed QM1 switch AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 35 of 132 PVI NEMA3R XXX US TL Rev 1 0 TBD Figure 5 13 Input Output control and alarm signals for NEMA3R 350 400 US without Trans former p Figure 5 14 illustrates the DIN rail mounted distribution terminal boards for auxiliary voltage and the AC DC supply PS3 used to power the cooling fans for the fuses located in the framework POWER SUPPLY 26VDC oe elo 24Ndc Out fe aa POWER SUPPLY Figure 5 14 Various devices In Figure 5 15 starting from the left illustrated is the line up of DIN rail devices used for e ground fault detection e their associated fuses e associated control relays for commanding the internal functions e g opening closing the counter switching the cooling fans on off etc AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 36 of 132 PVI NEMA3R XXX US TL Rev 1 0 go
84. es a module is opera tional while the symbol identifies module in an alarm mode In the area indicated by the dotted line the state of the Supervisor Inv of the digital signal processor DSP and of the type of alarm Alarm can be read e Inverter ID shows the serial number SN and the state of the master or slave of the module M S e Inverter Val shows the value of the size selected from the list Select Val in the top right side Figure 16 9 shows the list of addressable items where the fol lowing values can be seen Voltage Panel Voltage read by the supervisor Vrms IN Voltage Field voltage Vrms IN Current DC input current Arms IN Power Input power W Bulk Voltage DC voltage on the internal capacities Vdc Bulk Voltage 75 DC voltage on the internal capacities Vdc Grid Voltage RS Grid voltage linked to phases R S Vrms Grid Voltage ST Grid voltage linked to phases S T Vrms Grid Voltage TR Grid voltage linked to phases T R Vrms Grid Power W Power sent to the grid MCU Temp Supervisor temperature C Power Feed Temp Internal power supplier temperature C Heatsink Temp Power electronics heatsink temperature C AN POWEr one Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 e Aux Temp 2 N A this indicator is not used e Aux Temp 3 Framework environment ambient temp sensor
85. gure 4 5 shows the AURORA PVI NEMA3R 400 TL model with its 8 independent modules 1Master N Slave mode The Transformer is usually connected to the inverter output as shown The customer is responsible for providing appropriate over current protection devices for connection to the grid P 1 recommends switches employed equipped with suitably sized mag Page 24 of 132 neto thermal protection and a rated fault current capability of 1200 A Modules can operate in two different mod es depending upon the type of system re quired Configuration is done in the factory prior to delivery Master Slave or Multi master slave for models with on board isolation transformer 1Master N Slave for Transformer less mod els lt Multi Master Slave In the Multi Master Slave mode each two slot Framework operates as an independent 100kWp with a pair of SOkWp modules in Master Slave mode and has a single maxi mum power point tracking MPPT input Chapter 56 1 1 In this mode the PV fields associated with each Framework are connected in parallel 4 1 1 1Master N Slave Inverter 2 350kW In the Master N Slave mode used for all TL inverters a single Master manages all connected 50KW modules using a single maximum power point MPPT channel n Qe 56 1 2 In this case PV fields connected to all of the associated modules are connected in pa rallel It is important that the operation of the DC i
86. hape of Power Page 69 of 132 Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 70 of 132 12 2 Sequence for commissioning the Multi Master Slave systems The procedure for starting up AURORA is as follows 1 Make sure that the grid switch is OFF 0 or horizontal position 2 Make sure that the DC switches are all OFF 0 per Figure 6 4 A 3 Place the 52 switch in the ON position up to activate the system control Note that the front displays should be active lit 4 Check the front signaling displays on each framework mu 85 2 4 a In case of Multi Master Slave the MASTER LED will only light up on only one of the 50 kW modules of the Mas ter Slave group The presence of two MASTER LEDs being lit in a master Slave unit indicates a problem b In either case the displays will show an alarm due to the open switches The P N of the System and the S N of the modules will also be displayed cyclically c The POWER ON LED flashes d The ALARM LED is lit e The MISSING GRID LED is lit 5 One at a time close the DC switches by moving the handles to position 1 per Figure 6 4 D a The display of the module with the closed switch will signal the alarm that the AC switch is still open b The POWER ON LED flashes red c The ALARM LED is lit d The MISSING GRID LED is lit e The main display will signal the presence of the open AC switch 6 Close the cabinet doors and
87. his item will display the follow ing information PT Total operating time since the last time the count was reset E Total energy produced since the last time the count was reset Val Economic gain since the last time the count was reset Partial Reset Allows reset of the preceding parameters to zero 13 6 5 E today Selection of this item will display the follow ing information E Total energy produced today Val Economic gain today 13 6 6 E Week Selection of this item will display the follow ing information E Total energy produced this week Val Economic gain this week 13 6 7 E Month Selection of this item will display the follow ing information E Total energy produced this month Val Economic gain this month T POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 13 6 8 E Year Selection of this item will display the follow ing information E Total energy produced this year Val Economic gain this year 13 6 9 Last N Days Selection of this item will display the follow ing information E Total energy produced in the last days indicated by N 14 AURORA CENTRAL PVI MONITOR 14 1 How the display functions Page 79 of 132 Val Economic gain in the last days indi cated by N 13 6 10 Power Peak Selection of this item will display the follow ing information PPA Value of the power peak
88. ial line Protections against overheating incorpo rated into each module The use of a computer is not required for operation of the system and only necessary for functional verification during installation and system monitor ing from a PC Q Chapter 516 AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 44 of 132 PVI NEMA3R XXX US TL Rev 1 0 PVI NEMA3R 300 US PVI NEMA3R 400 US TL PVI NEMA3R XXX US TL Aurora Converter RS485 232 Figure 8 1 Wiring method of the PVI NEMA3R XXX US TL communication serial cable i The RS 485 communication bus can be utilized to connect a number of the PVI NEMA3R XXX US TL inverters via a daisy chain wiring method It is possible to connect inverters of different types and sizes PVI NEMA3R 400 US TL PVI NEMA3R 300 US PVI NEMA3R XXX US TL li ll MM TER Aurora i i o Converter RS485 232 Figure 8 2 RS 485 bus wiring detail for the PVI NEMA3R XXX US TL AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 45 of 132 PVI NEMA3R XXX US TL Rev 1 0 8 2 Connection modes for monitoring There are two primary modes A and B used to connect the RS485 line from the PVI NEMA3R XXX US TL in order to monitor the inverter operation while two other modes C and D do not re quire the RS4
89. ing Point points to retain Graph settings Cursors Axis solar field scan Figure 16 20 Polulated Solar Field Scan screen In the area within the dotted line at the top of this screen the values of exported power and vol tage are displayed as well as the maximum points reached by the curve Pressing the Read WP button allows display of the working point as indicated in the example of Figure 16 20 lt AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 108 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 12 1 Loading and displaying saved Power Voltage curves This function allows the P V characteristics which have been previously stored to be recalled and compared and the resulting composite file to be saved In this way an archive of the characteris tics of the photovoltaic field can be created This function is useful in the installation and mainten ance phase Refer to Figure 16 21 eBy pressing the Load S Select solar field curve files Field Scan button a pre Mese CWogam Mur Cera O v viously saved curve can be T enon called and saved in the Se lected Files field of the LJ mex fies SolarFieldScan_SNOO0017 txt screen below 5 E SolarFieldScan SNO00017 2 txt eSelect the file that contains the desired curve and
90. ith additional protections to guarantee the safe operation under any circumstances In addition to anti islanding function noted above other such protections include Constant monitoring of the mains voltage to guarantee that the voltage and frequency values remain within operating limits ac cording to standards in force in the country where it is marketed GROUND FAULT DETECTOR INTERRUPTOR a special device determines if current to ground too high and if so disconnects the inverter from the grid and registers a fault and alarm the DC side Qus 5 11 6 An internal temperature control to automat ically limit power if necessary and to guaran tee that the unit does not overheat The Page 42 of 132 graph in the Figure 7 1 and Figure 7 2 shows the automatic derating of delivered power TBD Figure 7 1 Power derating 250 300kW TBD Figure 7 2 Power derating 350 400kW TL AURORA s many control and protection de vices that result in a redundant system that guarantees operation in absolute safety Automatic measures e The DC voltage of the photovoltaic field is measured and if too high an overvol tage OV fault is signaled on each mod ule independently e The independent AC voltage on each module is measured AC output current of each module is measured independently e The grid voltage frequency is measured on each module independently fN POWEF DIE hanging the Shape
91. le For some types of extraordinary interven tion it may be necessary to remove a 50kWp module from its seat for example in case of module breakdown 19 5 1 Preliminary operations A module is too heavy to be supported by a person therefore it is necessary to use a mechanical aid to facilitate the withdrawal operation and the further insertion see the figures below as an example am 4 amp i l ase w b Lv T gt vie Follow the directions regarding the discon nection of the AC and DC and then go to next step Chapter 19 Locate the module to be removed and re move the 4 screws securing 50kWp module to the framework hanging the Shape of Power Installation and Operation Manual Page 119 of 132 PVI NEMA3R XXX US TL Rev 1 0 19 5 2 Removing the module Remove the trolley and push the 50kWp After having completed the previous para module firmly so that it enters the frame graph follow the indications Place the lifting trolley with the platform or work prongs in line with the base of the module 4 blocking screws of the 50kWp module to be removed 19 5 4 Final operations After having completed the previous para DO NOT JERK OR OTHERWISE graph follow the indications ABRUPTLY MOVE THE MODULE Perform the commissioning again following Pull the module approx 15cm from the the relative instructions framework and place the lifting t
92. limited to 5OKW If for some reason the slave module asso ciated with the failed master does not Page 27 of 132 detect failure of its master in this case it would also shut down and the system loss would be limited to 100kWp The dialogue between a module s DSP and the Microprocessor occurs via a CAN BUS communication link The same protocol is also used for dialogue between modules belonging to the same system but within different Frameworks This division of com munication to several links guarantees op timal operation of the entire inverter and a high performance in any isolation and load condition and always in full compliance with applicable safety standards and prevail ing regulations For external control and monitoring of the PV system the inverter has two indepen dent RS485 serial ports Inverter monitoring String combiner monitoring Aurora string combiners only Q Chapter 58 lt T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 28 of 132 PVI NEMA3R XXX US TL Rev 1 0 5 DESCRIPTION OF COMPONENTS AND COMPOSITION OF THE PVI NEMA3R XXX US TL 5 1 Overview Figure 5 1 shows the main components of the PVI NEMA3R XXX US for the 250kW and 300kW ver sions with isolation Transformer The common characteristics for these models is the presence of an isolation Transformer and three FRAMEWORK E two overlapping and one above the trans former compart
93. ling 116 17 2 REPLACEMENT OF FAULTY BATTERY ronem aeo tcn Ho e ro 116 19 SWITCHING OFF AND DISCONNECTING THE 5 117 19 1 DISCONNECTION FROM THE AC dio nase oda banbaaaeddecaweadenancaane 117 19 2 DISCONNECTING THE PHOTOVOLTAIC FIELD EK rbd EGER A NEAR E GRH DEAN EXE 117 19 3 DISCONNECTION FROM THE AUXILIARY SOURCE Ra ERR etia at bd eie Rr a Rb neta ad 118 19 4 UPSTREAM DISCONNECTION OF THE INVERTER dick koi kc Rl ck ec Rn Y lo rk oen C HR HK D n 118 19 5 REMOVAL AND INSERTION OF A SOKWP MODULE A 118 19 5 1 Preliminary operations POMPE 118 the 119 19 5 3 Insertion of 119 1954 Final operations S mc 119 Mcedcm 119 21 TROUBLESHOO TUN Gis VUE ph Vela Fe Gi UE UE Do YER EN USER 120 21 1 FAQ FREQUENTLY ASKED QUESTION i55 ouis oasascts Vinos na acerca ufu RE a RR db Co nw Ru E a lid 120 21 2 BEFORE CONTACTIN
94. ly followed during the installation and maintenance of the product 1 1 Disposal of waste As a manufacturer of the electrical device described in this Manual and in compliance with Italian Legislative Decree No 151 of 25 July 2005 Power One informs the customer that this product when scrapped must be delivered to an authorized collection point T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 13 of 132 PVI NEMA3R XXX US TL Rev 1 0 1 2 Symbols used with the product The symbols referring to the electrical parts on the inverter are also be used in this manual and are as follows Connection point for earth conductor Continuous positive voltage pole Continuous negative voltage pole Direct current VDC Earthing GRD 1 3 Labels used with the product Refer to Fig 1 1 and 1 2 Make sure to read and fully understand the label information before instal ling the product The inverter is provided with several labels some of them with yellow back ground related to safety devices Power one Lnd c us 7 Country of day UL 1741 CRA C1LI Na 107 141 PHOTO VOLTAIC GRID TIED INVERTER UTILITY INTERACTIVE SM MODEL PVI4CENTRAL MSIUS Ex RATIS WK VR Dyben Winga V eT Opening ager STO e RAF Ek aig Pare JOD AOV Dormir 30 Soret 3 AP
95. may be necessary to disconnect the earth connection wiring jumper Remember to reconnect these wires on every panel before reclosing lt 4 AC power network connection bars 10 2 5 Composition of the ACBOX 5 Transformer connection Contactor area After removing the front panel the follow For models without Transformer after re ing area can be identified moving the front panel the following areas can be identified TBD Figure 10 10 Composition of the ACBOX A for PVI NEMA3R 350 400 US TL Figure 10 9 Composition of the ACBOX A for PVI NEMA3R 250 300 US 1 Isolation Transformer Transformer cooling fans 3 Magneto thermal breaker and protec tion switch and on the rear transformer breaking contactor Figure 10 11 Composition of the ACBOX F 78 POWEF IIe hanging the Shape of Power p Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Where 1 DC cable connection area 2 Terminal blocks for connection of aux AC input and RS 485 serial com munications 3 Location of thermostat and hygrostat for monitoring transformer conditions and OVR AC side protection Page 58 of 132 10 2 6 Cable passage area Figure 10 12 and Figure 10 13 show the cor rect positioning of the inverter input output cables Pass the DC AC auxiliary AC ground and RS485 through the openings in the base of the inverter Fig
96. me e Open the shipping container and ex amine the contents for signs of any damage inside When unpacking use Page 47 of 132 care not to discard any equipment components or manuals If any damage is found contact the forwarding agent to determine the best measures to take An inspection may be required e Be sure to retain all packaging material for the inspector If the inspection reveals damages call an authorized dealer for a decision whether the equipment should be returned for repair and provide instructions in this regard It is the customer s responsibility to register a formal complaint with the forwarding agent Failure to follow this procedure can lead to the loss of assistance under guaran tee for any damages found 9 2 Handling and withdrawal of the PVI NEMA3R XXX O TL from the packaging The inverter is packaged for shipment in a wooden crate The handling of the inverter in the crate must be done following the instructions in this manual Chapter 80 9 2 1 Content the packaging Each package contains the following mate 1 rials wes mua 1 owe 1 There may be differences pursuant to agreements A gt gt gt with the customer AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 48 of 132 PVI NEMA3R XXX US TL Rev 1 0 9 2 2 Removal of the inverter After removing the
97. meas ured at system turn on PPT Value of measured peak for today A N POWCI UIE NAS Figure 14 1 Display touch screen of the NEMA3R The main system display shown in Figure 14 1 is located in the left door of the front panel of PVI NEMA3R XXX US TL It is possible using this display to view parameters for up to eight 50kWp modules concurrently and using the touch screen functionality to view the following information Operational status of all 50 kW modules of the inverter and static data Operational status of all PVI STRINGCOMB US connected to the inverter Service messages for the operator Alarm messages AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 80 of 132 PVI NEMA3R XXX US TL Rev 1 0 The display can also communicate with other devices e g a normal laptop computer by means of a Type B USB port and as an option via Bluetooth this type of communication is made possible by the use of a special software The graphic display allows a simple and intuitive interface for the operator capable of navigating through the various menus using the touch screen feature 7 4 Y V A at j gt 1200 INPUT OUTPUT NAI 2 Termination USB RESET SD CARD ON OFF Figure 14 2 Interactive display The bottom rear edge of the display can be accessed by opening the left door of the PVI NEMA3R XXX US TL and contains the following
98. ment The main difference between these models is the provisioning of either five or six 50kWp power modules Figure 5 1 General overview of the PVI NEMA3R XXX US versions 250kW and 300Kw power one ASO AS Changing the Shape of Power Installation and Operation Manual Page 29 of 132 PVI NEMA3R XXX US TL Rev 1 0 For the 350kWp 400kWhp versions the common characteristics are the lack of an isolation transformer and the presence of four two slot frameworks overlapped two per side containing seven or eight 5OKwP power modules Figure 5 2 General overview of the PVI NEMA3R XXX US TL versions 350kW and 400kW In summary the difference between the 250 kWp or 300 kWp versions and the 350 kWp or 400 kWp versions is the presence or absence of the isolation Transformer the number of two slot frameworks and provisioned slots for 50kWp power modules 1 350kW and 400kW versions have four frameworks AN POWET 0One Changing the Shape of Power Page 30 of 132 Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 5 2 Description of the inverter parts I SN VE iy Figure 5 3 Layout of ACBOX A for versions with transformer 250 300kWp TBD Figure 5 4 Layout of ACBOX A for versions without transformer 350 400kWp AN POWEF IIe ASO hanging the Shape of Power gt Installation a
99. move the AC switch in position 1 ON by turning it clockwise The open switch signal should dis appear from the main front door dis play b The fans will be activated if the DC voltage is sufficient to leave the energy saving mode SE In the energy saving mode indicated by the display the letters SE the system places itself in a monitoring only condi tion and the ventilation system of the modules is deactivated c Ifthe DC voltage is not sufficient to allow connection to the grid the display presents a WAITING FOR SUN message When the necessary condi tions presence of DC and AC voltage are satisfied the system will automati cally connect to the AC grid e Slaves are connected to the grid with the Master e Ateach grid connection the sys tem will perform a complete scan of the PV field to locate the maxi mum power point In this phase power will suddenly peak and plummet for less than 5 seconds d Thevarious key parameters will be shown on the main display Chapter 514 The conditions for connection to the grid are de termined by the country in which inverter is utilized T POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 71 of 132 PVI NEMA3R XXX US TL Rev 1 0 12 3 Sequence for commissioning the 1Master N Slave systems The procedure for commissioning a 1Master N Slave system is the following 56 2 2
100. mp E and A amp D LN POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 The following tables show the signals present at various locations on the terminal board Table 11 2 Communication signals in the terminal block X16 X7 4 D 5V ISO D 485 USR D 485 USR D GRD A GRD 5V ISO A 485 USR 485 USR GRD D D 485 USR2 D 485 USR 2 D GRD A GRD7 A 485 USR2 A 485 USR 2 GRD Table 11 3 State signals in the terminal block x2 x3 x5 xe F F F F E E E E E E D D D D D D AUX_C1 A 2 a aux_c3 a aux_c4 A A AUX C6 AUX_NO1 B AUX B AUX B AUX NO4 5 AUX NO6 C AUX 1 AUX 2 AUX NC3 C AUX 4 C 5 C AUX NC6 Table 11 4 Control signals in the terminal block X9 X10 X11 GRD7 5 6 GRD7 E E 4 D GRD7 D REMOTE1 D REMOTE2 A GRD7 A 1 A 2 B GRD7 B B REMOTE 4 GRD7 REMOTES REMOTE
101. n Inf ti Enter Vgrid Xxx M ntormation Information Fgrid Xx xx Hz A Enter 5 secs Up Down Statistics Statistics VE Up Down 0 ul Vbulk xxx V Vbulk xxx V Up Down o 5 secs 5 Up Down 4 Vin xxxV lin Xxx A A 5 Spes Up Von Pin xxxx W A Up Down 5 secs Up Down v Inverter OK lt Date time gt lt Clock Status gt DISPLAY INVERTER Figure 13 2 Functional diagram of the display Main Menu The Figure 13 2 shows the information displayed during normal operation Pressing ENTER ESC UP or DOWN will cause the display to scroll among menus as indicated AN POWEF DIIE ASO hanging the Shape of Power Installation and Operation Manual Page 75 of 132 PVI NEMA3R XXX US TL Rev 1 0 Settings Address Address Insertion External 485 Baud Rate Speed Selection Internal Eo Active THE Inactive Intensity Contrast Intensity Contrast Selection Selection New PW New Password Insertion Currency Name Currency Currency KWh Date Time Date Time Settings English Spanish No trafo 50 kW Trafo type 100 kW 200 kW 300 kW Figure 13 3 Functional diagram of the display Setting menu
102. n of fuses NJ Chapter 17 1 4 2 The numbering of the module slots must not be confused with the serial number of the single module The use of slot number Removing the front panel in this area allows access the fuses on the AC line of each 5 2 4 Framework area E This section of the chassis contains areas B ing of single modules facilitates the con C and D and can be provisioned for one or nections on the DC side where there are two 50kWp modules If only one slot is pro labels with the corresponding slot num bers 1 In the case of 250 kW or 350 kW versions only one Chapter 5 1 module may be present AN POWEF DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 37 of 132 6 DESCRIPTION OF THE INPUT CONFIGURATIONS AND DC SWITCHES OPERATION 6 1 Possible field configurations here are various ways of configuring the AURORA PVI NEMA3R XXX US TL input in order to meet the con struction requirements of the photo voltaic field Q Chapter 84 1 The type of configuration depends on the model of the inverter ordered 6 1 1 Multi Master Slave In this configuration the inverter behaves as up to three independent 100kWp inverters Figure 6 1 dotted lines i e each Frame work works separately with independent MPPT inputs Chapter SError Reference source not found This configuration is only available us ing the 2
103. n of this item will display four fig ures indicating the Part Number of the sys tem 13 5 4 Sys Series No Selection of this item will display Sys Series No the following information will be shown Series No rack Series number of the 13 5 5 Trafo type Selection of this item will display Trafo type the following information will be shown Trafo yes no former or not Mod No the system Presence of the trans Number of modules in 13 5 6 Firmware Selection of this item will display the release version of the software in the module Page 77 of 132 13 5 7 Junction Box only on the module designated for control This item of the menu allows for verification of the state of any connected Aurora string combiner StringCombs boxes associated with the system Selection of this item will display Junction Box the following information will be shown Nn is an assigned number n of a string combiner installed in the system set by the installer Tn is number n of the rack Rack N to which the StringCombs is associated Rn is number n of the StringCombs de tected by the module R must coincide with N unless there is a fault Jn is the ID number of a given string combiner Number n varies from 1 to 12 Px indicates the presence Y N of a PVI STRINGCOMB US string combiner There can be a maximum of 12 in a system T POWEF DIE VSG hanging the Shape of Power Inst
104. n the efficiency of AURORA PVI NEMA3R XXX US TL and guarantee safe operating conditions the maintenance op erations described in this section are neces sary Maintenance also includes checking wearable items and if necessary replacing such components Page 109 of 132 The equipment is designed to provide a lifetime operation of not less than five years in the environment and for the type of application specified Un scheduled maintenance interventions are not generally predictable and are due to verify the installation and to replace faulty components The routine or unscheduled mainten ance activities should be performed whenever possible during periods of lower production efficiency in order to reduce costs LU LM Since most maintenance requires removal of the security panels it is vital to insure be fore re powering the inverter all covers and ground jumpers have been correctly re placed with particular care given to the front access panels for the fuses and the relative earth connections T POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 110 of 132 PVI NEMA3R XXX US TL Rev 1 0 17 1 Routine maintenance Maintenance inside the PVI NEMA3R XXX US TL must be carried out following the procedures shown in Table 17 1 Table 17 1 TABLE OF ROUTINE MAINTENANCE ACTIVITY FREQUENCY Cleaning of filters and grills and internal inspection for dirt E
105. nd Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 122 of 132 21 2 Before contacting the dealer Questionnaire In case of problems which cannot be solved directly and in any event whenever it is necessary to contact the dealer we advise you to make a note of the following information 21 2 1 Problems on the StringCombs INFORMATION ON STRINGCOMBS Type of problem Number of PVI STRINGCOMB US in the system Number of PVI STRINGCOMB US in volved in the problem Where are they installed ground roof etc Has the last PVI STRINGCOMB US of the series chain been terminated How many strings enter the PVI STRINGCOMB US Composition of a string Number of panels in a series Type of panels Producer and Model Other information e g Are there any diodes Is the photovoltaic field insulated from ground 21 2 2 Problems on the PVI NEMA3R XXX US TL INFORMATION ON THE INVERTER Information available directly from the LCD display AURORA model Serial number Week of production What is the state of each LED flash ing or ON or OFF What signals can be viewed on the dis play Brief description of the fault INFORMATION on the Photovoltaic Field Make and model of photovoltaic panels e Plant structure Have you noticed if the fault is due to any specific operation If so which Have you noticed if the fault is cyclical If so how often Was the fault apparent at th
106. nd Operation Manual Page 31 of 132 PVI NEMA3R XXX US TL Rev 1 0 INPUT OUTPUT ALARM AND CONTROL SIGNALS INPUT DC CABLE INPUT Figure 5 5 Front layout view of ACBOX area F DC SWITCH MODULE 50kW i nac EE TC i as Bs 4 EI a MODULE 50kW ee 8 ee ee DC FUSE Figure 5 6 Front view of typical FRAMEWORK area E AN POWEF IIe Changing the Shape of Power Tu n AUXILIARY Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 5 2 1 ACBOX As shown in Figure 5 7 the connection area for DC cables coming into the inverter from the photovoltaic field is located in area F of the ACBOX with frontal view to the left of the inverter Positive inputs front to back on the left and negative inputs are front to back on the right The numbers correspond ing to the 50kWp modules count from the front module 1 toward the rear if the cabi net INPUT DC CABLE Figure 5 7 DC Cable Input 5 2 1 1 Versions with Transformer The isolation Transformer is located in the ACBOX of Figure 5 1 area A It is cooled by four fans located on the front panel The AC breaker with the connection bus bars and the main AC contactor are lo cated in the same compartment to the right of the transformer Figure 5 8 Page 32 of 132 TERMOMAGNETI BREAKER AND CONTACTOR AC E Ln Figure 5 8 AC C
107. nging the Shape of Power Installation and Operation Manual Page 91 of 132 PVI NEMA3R XXX US TL Rev 1 0 Depending upon the mode choice made in Q Figure 16 3 either the Single Module Panel Chapter 816 4 2 or Plant Configuration window will appear lt q 16 4 1 Single Module Panel After scanning Commutation Inf ive f Single Med Sean e eecct Pr Single Module Panel Communication Interface Info iE wx am pim 0000165 ane 00000 2 5 ane ww mem a s s se om an Nn MER ps 00 mm s 31 a Pe WE ZEN a a NEED PED gt gt Figure 16 5 Single Module Panel eIn the upper screen of Figure 16 5 in or e RS485 Addr RS 485 address assigned to der to reduce scan time the user can set the module a limit based on highest RS485 address e M S M Master S Slave used by populating the Max RS485 Ad e SN Series number of the Module dress field Doing so the program will e PN Module code scan to find all the modules within the e Rack SN Series number of the Rack to chosen address range which the module belongs ein the lower screen of Figure 16 5 click e Rack PN Code of the Rack to which the on the Start Scan button and the sys module belongs tem will search for all the connected and e Rack No ID number of the Rack functioning modules within the chosen e S Box Manager Indicates whether the ANGE
108. nical Characteristics cable lug 10 x 350 Kcmil 90 M10 cable lug 3 x 350 Kcmil 90 M10 PE CONNECTION max wire ca ble lug 1 x 4 OAWG 90 M12 Dimensions WxHxD mm 2933 x 1947 x 1250 Overall Weight Kg T B D 50kW module Weight kg 70 Required Ambient Air Cooling Flow m h T B D POWEr 0ne Wu sl G hanging the Shape of Power Page 127 of 132 1x RS485 1x 5485 dedicated to PVI STRINGCOMB US T B D Touch screen display 12 x 350 Kcmil 90 M10 3 x 350 Kcmil 90 M10 1 x 4 OAWG 90 M12 2933 x 1947 x 1250 T B D O T B D v Installation and Operation Manual Page 128 of 132 PVI NEMA3R XXX US TL Rev 1 0 Table 23 2 Data Sheet PVI NEMA3R 350 400 US TL Characteristics PVI NEMA3R 350 US PVI NEMA3R 400 US Input Parameters Maximum recommended PV pow 385 440 er KWp Absolute maximum input voltage 600 Vdc MPPT input voltage range Vdc 320 600 320 600 Number of Master Slave 1 Total Maximum input current Adc 1190 1360 For module 170 170 Input Reflected Ripple voltage T B D T B D Number of DC inputs available 7 Input overvoltage protections 7 1 for each input 8 1 for each input Output Parameters TBD 8 1foreachinput Nominal AC Output Power KWp 350 00 Nominal AC Output Current Arms T B D AC Output Voltage range Vrms T B D Nominal AC Frequency Hz 60 Power Factor cos d T B D AC Current
109. nitor Solar field gt Solar field scan Info gt Software version gt Software license Module interface and Rack interface i show the associated windows illu strated in paragraphs Q Chapter 16 4 1 Chapter 16 4 3 The functions screens available via these menus are explained in detail below 4 active single module mode active in single plant mode gt active only on modules dedicated to StringComb management T POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 97 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 5 Inverter Identification The screen of Figure 16 10summarizes the nameplate data of a single module 21 inverter ID Module Rack ID Monitoring Statistics String Comb Calibration Variables Commands Solar Field EEPROM Language Info 106283 NOT WRITE 318 NOT WRITE 16 NOT WRITE 10 NOT WRITE 106610 NOT WRITE 3131 NOT WRITE 0 WRITE Figure 16 10 Inverter ID Single Module Interface The parameters listed are as follows Description Series number of the module Part number of the module Week Week of production Year of production Type of connected transformer RackSN Series number of the rack 55 RackPN Partnumber of the rack O RS485 Address of the rack in the plant AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 98 of 132 PVI NEMA3R X
110. nput switches be well understood N POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 25 of 132 PVI NEMA3R XXX US TL Rev 1 0 OVR l a stu OVR lists INVERTER MODULE 50KW INVERTER MODULE
111. nstalla tion can cause serious damage to personnel and or property To prevent accidents and unnecessary ha zards all operations concerning transport installation and switch on including main tenance must be carried out by qualified and trained personnel possessing the skills needed to perform required tasks as neces sary to meet requirements of any applicable standards and regulations Page 17 of 132 It is the responsibility of the installer to complete all tests and measures to ensure the adequacy of the final plant operation in accordance with the prevailing codes and applicable regulations in force Failure to comply will result in suspension of any form of warranty and liability by Power One If any questions that arise during reading of this manual or during subsequent installa tion it is the responsibility of the installing party to clarify any issues before proceeding by contacting P1 Technical Services Records of the tests performed during in stallation must be available for subsequent inspections and for purposes intended by the standards and laws in force Power One assumes no liability for damage to property or injury to personnel due to incorrect interpretation of the instructions in this manual and or from improper use of the device AN POWEI DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 18 of 132 3 GENERAL INFORMATION A
112. nstalling the filter frame check the air inlet grills for any obstructions After completion of the above procedure reinstall the filter in the frame and reinstall in the slot in the inverter chassis Replace the cover panel and tighten locking screws 17 1 1 2 Door mounted air input filters To access the door mounted air inlet filters first remove the cover panel on the back of each inver ter door by unscrewing the hold down screws Then remove the frame that houses the filter itself Figure 17 1 and Figure 17 3 Once the filter frame has been removed remove the filter element and wash in soap and water Do not use flammable solvents Check the input grills and intervene in case of obstruction AN 0 Changing the Shape of Power Installation and Operation Manual Page 112 of 132 PVI NEMA3R XXX US TL Rev 1 0 AIR FILTER amp AIR FILTER PROTECTION PANEL FILTER FRAME Figure 17 3 Frontal filter panel 17 1 2 Visual and Bus bar inspections In order to check the bus bar connection integrity it is necessary to open the inverter Make sure the entire system is switched off and isolated from the DC input as well as from the AC side If it is necessary to operate on exposed parts not protected by panels it is not sufficient to turn the grid switches AC and field switches DC to O OFF be cause the input cables are always energized Turn off and disconnect the inverter Que 519 via external s
113. of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 e Independent thermal measures on each module e Protection fuses e DC side A DC fuse is provisioned for all active slots in every framework e ACside Three fuses are provisioned for each module slot for a total of 6 fuses per framework Other protective measures e Magneto thermal switch at the input of the auxiliary supply network e Magneto thermal switch at the input of the distribution grid 480 Vac 8 RS485 SERIAL LINE 8 1 Connection modalities of the RS485 line To allow remote monitoring of the PVI T NEMA3R XXX US TL an RS485 serial i communications bus is used Up to 32 inver ters can be connected to the same line i The inverter is provisioned with a switchable line termination 120 ohm resistor For a system using a group of PVI NEMA3R XXX US TL inverters are daisy chain con nected to the same communication bus the last inverter in the chain must have the line termination resistor enabled Figure 8 1 Figure 8 2 all others must have it dis abled Q Chapter 511 7 2 Page 43 of 132 DC side protections against over voltages OVR with replaceable car tridge fuses AC side protections against over voltages OVR with replaceable car tridge fuses on the 480Vac grid and the auxiliary voltage Protection against over voltages OVR with replaceable cartridge fuses on the RS485 ser
114. of the rack relative to the open switch will signal an AC switch alarm c The LED flashes POWER ON d The ALARM LED is on e The MISSING GRID LED is on Inthis phase it is possible that the J modules display a different error in the first minute since the opening of the grid switch is interrupted and a Grid Fault alarm or similar may be triggered off After the recovery time e g 60 sec the signal will be the same on all modules 19 2 Disconnecting the photovoltaic field Below the procedure for disconnecting AU RORA module 50kW from the photovoltaic field DC Make sure that the AC switch is in O posi tion Qs 51 1 Open the door One at a time turn the DC switches to the position Figure 6 4 A i e turn them counter clockwise Que 66 In the case of Multi Master Slave 250 300kW US both switches of a frame work must be turned so that the modules are physically disconnected from the field Table 6 1 T POWEF DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 In the case of 1Master N Slave 350 400kW US TL all switches of a rack must be turned so that the modules are physically discon nected from the field Table 6 2 Disconnec tion is also possible from the external DC switch Before proceeding to the next step wait 30 minutes to allow system components to cool by allowing proper heat dissipation thr
115. opens the main AC connection and DETECT MODULE provides a visual signal of the intervention Y 5 6 via a red LED on the GFD module Figure 5 4 Figure 11 6 J3 J4 j The 250 300kWp version be con f em amp nected to three distinct PV fields and SE Dp FUSE FAULT are therefore provisioned with three HOLDER LED ground fault detectors Figure 11 6 Three GFDs provisioned on the The 350 400kWp versions contain a 250 300kWp versions single GFD 617 1 3 1 4 4 The connection of this device is pre determined at the factory POWEI DIE hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Page 66 of 132 11 7 Connections for communications state signals INPUT OUTPUT ALARM AND CONTROL SIGNALS INPUT OUTPUT RS485 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 F amp G F amp F amp aiF amp iFaiFaiFeiFe up up FOF O X16 X17 X18 X19 X20 X21 X22 X23 X24 X25 X26 X27 e e EOG pobeipepelpebelbeipe ipaipgipgpe e P 0 o6 5 SU
116. orage hole dimensions 4 power one YAS Changing the Shape of Power Installation and Operation Manual Page 53 of 132 PVI NEMA3R XXX US TL Rev 1 0 10 2 1 Safety distance The figure and the table below indicate the minimum distances that should be kept lt 4 Y Figure 10 4 Safety distances required around the inverter Table 10 1 Table of recommended distances A B de D 600mm 24 600mm 24 1500mm 60 800mm 24 AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 54 of 132 PVI NEMA3R XXX US TL Rev 1 0 10 2 2 Accessible step area The figure and the table below indicate the minimum dimensions for a step area around the inver ter which will ensure optimal access to all inverter parts 1 1 i p safe removal of a 50 kWp module it is absolutely necessary to have a stable area around he extraction area that can support the module weight and be stepped upon in order to op erate in safe conditions Q Chapter 819 5 SEL I NN EAE NETTEN oe 4 NIRE HEREDI ITE rr Figure 10 5 Step access area Table 10 2 Table of recommended distances for access area 500mm 2 ft 1000mm 4 ft ower one SA Changing the Shape of Power Installation and Operation Manual Page 55 of
117. ough the system fans 19 3 Disconnection from the auxiliary source To perform this operation check first for a local disconnect switch located by the in staller upstream of the inverter or use the internal QS2 switch according to the follow ing steps Follow the directions regarding the discon nection of the AC and DC and then go to next step Q Chapter 81 1 Chapter 819 2 Set the QS2 switch to OFF to disconnect the auxiliary supply Figure 11 5 At this point the system is completely dis connected and switched off 19 4 Upstream disconnection of the inverter If it is necessary to move remove the PVI NEMA3R XXX US TL or to completely iso late it from the rest of the plant it is abso lutely mandatory to disconnect the device from both the DC and AC sides i e from the photovoltaic field and from the grid To do fA POWEF DIE Page 118 of 132 this it is necessary to disconnect the DC in put voltage and the output distribution lines connected to AC clamps and the auxiliary power This operation is only possible by using the switches on the photovoltaic field and on the distribution line and not the switches on board the inverter At this point if necessary the DC and AC cables can be physically disconnected from the inverter removing the necessary pane ling Chapter 10 2 4 Chapter 51 1 Chapter 819 2 Chapter 819 3 19 5 Removal and insertion of a 50kWp modu
118. ower Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 MPPT Maximum Power Point Tracker One great advantage in using the PVI NEMA3R XXX US TL is the ability to extract maximum power from the solar panels re gardless of environmental conditions A photovoltaic panel exhibits the curves of current voltage I V in bold and power voltage P V shown in Figure 4 6 An array of identical strings therefore has the same characteristic shape The highest point on the power curve is called the max imum power point The location of this point varies continuously depending on the level of solar radiation available at the surface of cells On days with variable cloudiness i changes in the solar power output of an array can change quickly and in wide ranging manner variations from 100W m to 1200 W m can easily detected in about 2 seconds AURORA PVI NEMA3R XXX US TL is de signed to extract maximum power from the array it is connected to thus it will always operate at the knee or maximum power point of the Voltage Power curve Moreover since the Aurora MPPT has very fast tracking settling periods it will produce much more energy than a slow inverter on variable days PVI NEMA3R XXX US TL scans the 1 PV field each time there is a grid i connection allowing discovery of any possible multiple power peaks in the field characteristic and the in verter is placed immediately on the highes
119. oxes StringComb the screen of Figure 16 18 allows the parameters of this apparatus to be monitored pr String Comb monitoring Module Rack ID Monitoring Statistics Sbring Comb Calibration Variables Commands Solar Field Info Global PV Current A Global PV Voltage Inner Temperature 9 SwingBexN i FELCTI Figure 16 18 StringComb monitoring s use this program please consult the manual for the Aurora PVI STRINGCOMB US Boxes i FOR THE STRING CONNECTION FOR PHOTOVOLTAIC APPLICATIONS Supplied with the string boxes and available on the Power One website c Changing the Shape of Power Installation and Operation Manual Page 104 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 12 Solar field scan i This function allows scanning of the connected PV field and graphs the power vs voltage curve of the field The screen of Figure 16 19 is initially composed of blank area where the features detected in the field will be graphed Solar field scan Module Rack ID Monitoring Statistics String Comb Calibration Variables Commands Solar Field Info Solar Field Scan Trace P W 0 00 Current P W 0 00 Load S Field Scan Irr W7m 2 Temp Trace MPP V V 0 00 Current V V _ ooo S o 4 o ZOOM Press Ctrl Left Mouse But to zoom in and Ctrl Right Mouse But to zoom out press Ctrl Space to resume original view Trace
120. peration Manual PVI NEMA3R XXX US TL Rev 1 0 6 1 2 1 Features of the external DC switch It is important that an external DC switch is fitted according to these characteristics e Earth isolation 600 Vdc e Rated voltage 600 Vdc e Rated current 170 A x number of Mod ules example PVI NEMA3R 400 170x8 1360 Adc Check the serial connection mode of the poles of the switch to ensure breaking at 600 Vdc Se Red LZ Figure 6 4 Possible switch positions Page 39 of 132 In case of switches with thermal breakers make sure the temperature threshold does not interfere with the maximum allowable room temperature for operation 6 2 Function of the DC disconnecting switches in every Framework Inside the side panel the switch on the low er right side acts on the connection of the low module L Low while the switch on the top right acts on the high module H High AN POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 40 of 132 PVI NEMA3R XXX US TL Rev 1 0 Every Framework can contain up to a maximum of two 50kWp modules i In a Framework set up for a single 50kWp module only the lowest slot will be populated 6 2 1 Multi Master Slave System PVI NEMA3R 250 300 US In this configuration the two modules of the Master Slave Framework have the same PV field Each of the two DC disconnecting switches in a common framework is linked together
121. ration To check operation e Use a screwdriver to press the button with the word TEST on the disconnect ing switch Figure 10 9 4 Make sure that the knob turns clockwise from the ON 1 position to the yellow OFF 0 position e Before replacing the panel insure the switch is in the 0 position and the switch handle mounted on the cover is properly aligned 17 1 3 4 OVR AC device check Refer to Figure 17 8 and Figure 17 9 and check that the inspection windows are not red in color If so replace the faulty car tridges with others of the same type Page 115 of 132 AUXILIARY BREAKER OVR PROTECTION Figure 17 8 OVR Auxiliary VAC Devices It is necessary to check the fuses in the fuse boxes F1 of Figure 17 9 FUSE OVR AC GRID Figure 17 9 OVR VAC Grid 17 1 4 Checks on the Framework 17 1 4 1 OVR DC device check The integrity check of the DC OVR device is performed automatically and the LED dis play will signal a fault condition accordingly If a fault is indicated the open fuse cartridge must be replaced Good practice dictates checking all other fuses as well be power one SA Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 The DC side OVR fuse block is located within the framework chassis and requires removal of the associated 50 kW module to gain access FUSE gyg FUSE eee BB i il l al Figure 17 10 OV
122. ration Manual Page 12 of 132 PVI NEMA3R XXX US TL Rev 1 0 1 HOW TO USE THIS MANUAL The product covered by this manual must be used solely for the purpose described herein Any other usage is considered improper and dangerous and Power One declines any liability for dam age to property or personal injuries due to inappropriate use and or other use than the intended one Chapter 4 Before replacing any components in an Aurora inverter as covered by this manual and as may be described and mentioned in this manual particularly with regard to dischargers and fuses always contact the dealer Power One will not accept any liability for damages or injury due to the use of unapproved spare parts Power One reserves the right to make changes to this Manual and to the product without prior notice the latest version of the Manual indicating the revision number will be available soon on the site www power one com The figures are for approximate information and some details may not exactly correspond to the product referred to in this manual If any questions arise regarding the suitability of any informa tion provided contact Power One This manual describes all equipment and models Some models and versions are not marked as such It is therefore possible that the product you have may not be provisioned with certain equipment This Manual contains important safety and operation instructions that must be understood and accurate
123. rect information during the test cycle the system will interrupt such cycle and will signal the warning or error code The system will continue to repeat the dis play of the error message until the error has been removed Once the error has been removed the in verter resets all functions in progress and automatically restarts the connection Chapter 512 1 Table 22 1 Table of Error Messages and Codes ae ori tees rn OC Panel mec 1 Current Current input above maximum threshold above maximum threshold Vol E Bulk OV E004 oltage across capacitors above maxi mum threshold fa E005 pee in communication with the DSP 006 Exit current Exit current above maximum threshold maximum threshold IGBT current above maximum threshold E007 or IGBT al h tail visible f ft fA POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 124 of 132 PVI NEMA3R XXX US TL Rev 1 0 Mesue warning enor Diff i fD d Delta Bulk E015 ifference in voltage of DC condensers above maximum threshold Gridov woo4 OV mains network voltage GidUV 5 UV mains network voltage GidOF OF mainsnetwork Z GidUF 7 jUFmaeisnetwok ForbiddenState E024 Non admittedstate Fan Fail leftfanbocked 11 Temperature below minimum threshold m RP PN Remote
124. rmer MV LV type specified to match the electrical features of the inverter model used The specification and installation of the mandatory external transformer is the responsibility of the customer Instructions for the dimensioning of the external Transformer are indi cated below e MV side medium voltage refer ence to grid features e LV side low voltage reference to output electrical characteristics of a PVI NEMA3R XXX US TL Inverter Q Chapter 50 T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual Page 22 of 132 PVI NEMA3R XXX US TL Rev 1 0 PVI NEMA3R XXX 0 US i P x 7 Power PHOTOVOLTAIC FIELD DC BREAKER AC BREAKER DC BREAKER DC BREAKER Figure 4 2 Connection Details for inverter models 250KW 300KW provisioned with internal isolation transformer to AC grid p AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 23 of 132 PVI NEMA3R XXX US TL Rev 1 0 PVI NEMA3R XXX 0 US TL Power one PHOTOVOLTAIC FIELD MEDIUM VOLTAGE TRASFORMER MV GRID DC BREAKER DC BREAKER Figure 4 3 Typical Connection Details for a Transformer less TL versions 350KW 400KW in verter to AC grid 4 1 Technical Description of Figure 4 4
125. rolley with Q the platform or prongs under the base of Chapter 512 the module to be withdrawn d Finish withdrawing the module completely from the seat 19 5 3 Insertion of the module 20 SCRAPPING Align the platform on which the module to be inserted is positioned with the support When the PVI NEMA3R XXX US TL must be ing brackets of the framework scrapped it must be completely discon Push the module into the framework leav nected ing off approx 15cm Q Chapter 519 an authorized collection point DO NOT PUSH ON OR OTHERWISE APPLY PRESSURE TO THE FAN GRILLS Chapter 81 1 AN POWEF DIE Changing the Shape of Power Installation and Operation Manual Page 120 of 132 PVI NEMA3R XXX US TL Rev 1 0 21 TROUBLESHOOTING 21 1 FAQ Frequently Asked Question Before the product is dispatched various In the case of breakdown the system waits tests are carried out successfully in order to 60 seconds standard value then cancels check the functioning the protection de the fault signal and attempts to reconnect vices the performances to the distribution grid Such tests together with the Power One If after this time the system continues to quality assurance system guarantee optimal signal an error deal with the problem ac operation of AURORA cording to the following instructions If a problem arises the following events Follow the indications in the following table occur on one or
126. s Working Point Read WP points to retain Graph settings Cursors Axis Figure 16 19 Unpopulated Solar Field scan screen There are various areas on this screen with the following functions e Solar Field Scan in this area the environmental conditions associated with the scan can be noted for the P V characteristic displayed Pressing the Start Scan button will start the scan e Working Point the Read WP button allows display of the maximum power working point and how many data points are to be shown in the graph e Graph settings this allows for the display of a classic cross cursor and the projection of the point on its axes e The Clear button completely cancels the graphic AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 105 of 132 PVI NEMA3R XXX US TL Rev 1 0 Prior to starting scan if known the irradiance and temperature values associated with the graph can be entered in the fields shown operation is optional e Press the Start Scan button The program then prompts whether the user wishes to display e Only the master curve press Master Only button e Master with slaves press the Master Slave button 2 SOLAR FIELD SCAN Please wa Solar Field scan The utility will graph VIP dc profile gt gt l Chi select which values you wish to display Master only values Master Slaves values Master Only Mas
127. ssword is requested carry out the fol lowing procedure The default password is 0000 It can 7 be modified the Settings menu per Figure 13 3 Using the display keys to enter the pass word digits e Pressing ENTER will scroll the cursor from one password digit position to the next from left to right e Pressing ESC you return to the preceding number from right to left e Pressing the ESC key several times will return the program to the previous me nus e Pressing the DOWN key scrolls down wards through the digits from 9 to for the highlighted password digit posi tion e Pressing the UP key scrolls upwards through the digits from O to 9 for the highlighted password digit position Page 72 of 132 Password aga e After entering the correct password press the ENTER key to access the vari ous menu items saved within the pass word protected section 13 3 The display LED The display is provided with several signal ing LEDS POWER ON GREEN LED Indicates the presence of energy and of connection dis connection from the grid ALARM RED LED Indicates a problem GFI RED LED Not used at present MISSING GRID RED LED If lit it indicates the lack of grid voltage at the inverter out put Lighting of this LED may also be due to the open grid switch signaled on the dis play MASTER RED LED Indicates whether the module is a Master lit or Slave dark LM POWEF DIE
128. t power peak Page 26 of 132 Cell Temperature 25 C Current LA 0 10 20 30 40 50 Voltage V Figure 4 6 Example of I V curves Current Voltage and P V Power Voltage of a solar panel Unlike other inverters PVI NEMA3R XXX US TL has the ability to follow very fast variations in illumination al lowing the MPPT system to efficiently follow the light practically in real time POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Special features Due to the high efficiency of AURORA and its generously sized thermal design it has the ability to dissipate any internally generated heat quickly and easily and insures inverter operation at maximum power over a wide ambient temperature range Chapter 50 Each 50kWp module has dual internal trols made possible by the use of a Digital Signal Processor DSP and a central micro processor This control design allows the inverter to continue operating even under conditions where one or more slave mod ules cease operating Such a condition does not compromise the entire PV system but only the loss of up to 50kWp per affected module In a Multi Master Slave system if a failure of the Master module occurs under most conditions the slave detects the loss of the master takes the role of master and the system loss is also
129. ter Slave e After the above choice has been made the system requests a name for the curve i Please wait 2 CURVE NAME e After the confirmation OK the inverter will start the field scan JI f N POUWEI DIE Changing the Shape of Power Installation and Operation Manual Page 106 of 132 PVI NEMA3R XXX US TL Rev 1 0 Please waite M linis e After completion of the scan the program prompts for a name to be assigned to the data file Select file for solar field curve He SProgrammi amp urora Central 7 Cerca in Aurora Central EEPROM files IMAGE files Documenti recenti 2 Desktop N Documenti Risorse del computer Risorse di rete file SolarFieldScan SNOODU 7 txt Tipo file e Enter a file name and press the OK button After the file has been saved the curve is drawn as shown in Figure 16 20 power one SA Changing the Shape of Power Installation and Operation Manual Page 107 of 132 PVI NEMA3R XXX US TL Rev 1 0 2 5 Module Rack ID Monitoring Statistics String Calibration Variables Commands Solar Field Info Traces Solar Field Scan E Load S Field Scan Ir w7m 2 Temp 7 v n ZOOM Press Ctrl Left Mouse But to zoom in and Ctrl Right Mouse But to zoom out press Ctrl Space to resume original view Work
130. ter Slave 3 Total Maximum input current 850 1020 Adc E M Rd lt 3 lt 3 Number of DC inputs available 5 Input overvoltage protections 5 1 for each input 6 1 for each input Output Parameters Nominal AC Output Power KWp 250 00 40 C ambient 300 00 40 C ambient jua 315 for each phase 378 for each phase AC Output Voltage range Vrms 480V A 423Vac 528Vac 480V A 423Vac 528Vac Nominal AC Frequency Hz 60 59 3 60 5 60 59 3 60 5 Power Factor cos d 20 99 0 Pac nominal 20 99 Pac nominal AC Current Harmonics THD lt 4 Pac nominal lt 4 Pac nominal Inverter Switching Frequency KHz 9 AC side overvoltage protection Yes Yes Conversion Efficiency Peak Efficiency Vin 330 CEC Efficiency Environmental Parameters 25 C 60 C with Pout derat ing Environmental Protection Degree 25 C 60 C General Data Auxiliary Voltages Consumption W T B D T B D Night time losses W TBD POWEr one Wu sl G hanging the Shape of Power T B D Nema3R 25 C 60 C with Pout derating 25 C 60 C Operating Temperature Range Storage Temperature Relative Humidity non condensing Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 1x RS485 1x RS485 dedi Local Communication cated to PVI STRINGCOMB US Remote Communication option al T B D Touch screen display Mecha
131. this area the DC electrical e Single Module Values the state of the parameters are presented selected inverter e ACSide indicates the voltages cur e Fans shows the rotation speed of the rents frequency of the three phase tri module fans ad and the power exported from the e Temperatures shows the tempera module tures as in the Inverter Monitoring e Energy shows the total and partial e Switch state closed switches are indi energy of the module cated in green and open switches in e Select offers the possibility to choose red as in Inverter Monitoring the module to be displayed and that is part of the rack power one SA Changing the Shape of Power Installation and Operation Manual Page 100 of 132 PVI NEMA3R XXX US TL Rev 1 0 16 4 8 Fault Log The screen of Figure 16 13lists the faults and alarms registered by a selected module Scie Module ID Monitoring Statistics String lt Com Calibration Variables Commands Solar Field Info Fault log download ID ate7Hour format Save on file V DOWNLOAD ojojojojojolojoloiojoljo 0 0 0 0 0 0 0 0 o 0 0 Figure 16 13 Unpopulated Fault log screen e The Date Hour format box allows specification of a format for the date field associated with the data will be displayed e The Sa
132. tion procedure Chapter 10 AN POWEF DIE Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 Any personnel working on items internal to the inverter or removing protections from live parts must wear suitable personal pro tection equipment The inverter is con nected to high voltages associated with the photovoltaic field and to the distribution grid and is therefore always energized with hazardous voltage Do not remove the pa nels and or any other protection unless au thorized by the plant manager Removal of these protections exposes personnel to possible electric shock hazards We recommend us o ing appropriate tools Page 16 of 132 During installation and or maintenance pro cedures it is extremely important to be able to easily isolate the inverter prior to its con nection to the PV field by means of the DC switch within the device as there may be voltages and energy levels that can result in serious fire and shock hazards This can be done most effectively with an externally mounted disconnect switch and strings may be disconnected by means of the AURORA PVI STRINGCOMB US string combiner if present We recommend us ing appropriate tools T POWEI DIE VSG hanging the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 2 1 General Information Inappropriate use and or improper i
133. ure 10 2 These openings can easily be drilled to adapt to the position of the cables Figure 10 12 Cable output under the PVI NEMA3R 250 300 US i AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 59 of 132 PVI NEMA3R XXX US TL Rev 1 0 Figure 10 13 Cable output under the inverter PVI NEMA3R 350 400 US TL AN POWEF IIe Changing the Shape of Power Installation and Operation Manual PVI NEMA3R XXX US TL Rev 1 0 11 ELECTRICAL CONNECTION Before handling any cable make sure us ing suitable instruments that there is no hazardous voltage present The connection of AURORA to the electrical grid must be carried out only by qualified operators and only after having received authorization from affected utility and the authority having jurisdiction AHJ Page 60 of 132 CAUTION To reduce the risk of fire con nect Auxiliary Input only to a circuit pro vided with 25 amperes maximum branch circuit overcurrent protection in accor dance with the National Electrical Code ANSI NFPA 70 Output circuits must be isolated from the enclosure and system grounding required by Sections 690 40 and 690 42 of the Na tional Electric Code ANSI NFPA 70 and is the responsibility of the installer Wiring methods should be per the National Electric Code ANSI NFPA 70 and or any prevailing local codes and regulations T POWEI DIE VSG h
134. v 1 0 Page 15 of 132 2 IMPORTANT SAFETY INFORMATION The installation of the inverter products de scribed in this manual must be performed in compliance with prevailing codes and local regulations It is strongly recommended that all instruc tions in this manual be read and understood prior to commencing installation and use of the product For any maintenance or repairs not covered in this manual please contact the dealer Unauthorized changes may damage the de vice and may result in the loss of product warranty Electrical connections must always be made correctly with particular attention to main taining correct polarity in order to avoid possible damage to the device and the pho tovoltaic panels The connection to the distribution grid must be made only after receiving approval from the responsible authority having jurisdiction for electricity distribution as required by prevailing regulations in force within the installation locality and must be completed by only qualified personnel We recommend using appropriate O In case of failure an electric arc may be produced within the PVI NEMA3R XXX US TL supported by the DC source At worst this condition could cause fire and smoke damage to the equipment and surrounding area and thus being a danger to personnel and property Carefully follow all instructions in this ma nual paying particular attention to the sec tions describing installa
135. ve on file box if enabled allows the fault list to be saved in either a text txt format or an excel xls format based on the choice made e By pressing the DOWNLOAD button the system downloads the faults from the inverter and after displaying a processing window then lists the downloaded faults Figure 16 15 After wards a prompt screen window will appear asking whether to save the data to as a data file Figure 16 14 aixi oid Programm Aurora Central Cerca jn S Aurora Central CVI ex E3 EEPROM Risorse del co Nome file ZAA Risorse di rete Tipo file Figure 16 14 Window for saving the fault list AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 101 of 132 PVI NEMA3R XXX US TL Rev 1 0 Fauli log Module Rack ID Monitoring Statistics String Comi Varisbles Commands Soler Field Info Fault log download D ate Hour format Sava un Bele DOWNLOAD DENswichopen 25 01 08 Slave insertion 25 01 08 UF phase 5 25 01 08 DEH switch open 25 01 08 DEN switch open ERN Dc open DENswichopen o 165741 DC swatch open 25 0108 165741 DC swich open 25 0108 171221 DFphsseT 2900108 172522 30 0108 105855 2 My bET i me Prd ers ers es ese Figure 16 15
136. very Six Months 17 1 1 and or water Tightening screws and check on color changes Annually 17 1 2 Checks of the AC BOX area Annually 17 1 3 Checks of the transformer ACBOX area Annually 17 1 3 Checks of Framework area Annually 17 1 4 Check of warning cards and signaling devices Annually 17 1 5 The frequency of maintenance operations could be increased depending upon the environmental conditions of the install location 17 1 1 Filter cleaning To access the filter elements it is necessary to remove cover panels as noted in red per Figure 17 1 Use the occasion to make a general visual inspection of PVI NEMA3R XXX US TL Figure 17 1 Position of the air filter panels AN POWEI DIE Changing the Shape of Power Installation and Operation Manual Page 111 of 132 PVI NEMA3R XXX US TL Rev 1 0 After filter elements are cleaned insure they are completely dry prior to re assembly into the inverter 17 1 1 1 Upper input air filters To access the upper air inlet filters first remove the cover panel at the top front of the inverter chassis see Figure 17 2 by unscrewing the locking screws at each end Then remove the filter frame by pulling it outward Figure 17 2 AIR FILTER and FRAME FILTER Figure 17 2 Upper filter panel Remove the frame and then remove the filter fitted inside Wash filter element in soap and water rinse and dry completely do not use flammable solvents Before rei
137. witches Once the system has been disconnected and the inverter panels have been removed Figure 10 7 and Figure 17 4 check as indicated in Table 17 2 AN POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 113 of 132 PVI NEMA3R XXX US TL Rev 1 0 MODULE 50kW H LITLILETLELDLIILILILUILISBEGEIIIUIULLLLIIILLAS s JI i 1 MODULE 50kW ETE 1 1 p E D A i Raus es na na um humum PR RR RN M M D Figure 17 4 Framework cover panels to access DC and Fuses Table 17 2 TABLE OF VISUAL AND SCREW CHECKS To be checked and or o Check Lamm MMC AC ACfusebox box Connection points visible Connection points visible by removing the AC panel of Figure 17 4 removing the AC panel of Figure 17 4 DC fuse box Connection points visible by removing the DC panel of Figure 17 4 AC input bars Connection points refer to Figure 5 8 and Figure 5 9 DC input bars Connection points refer to Figure 5 7 Connection points visible by removing the DC panel of Figure 17 4 To remove the panels it may be necessary to disconnect the wire of the protective earth A wiring connections Remember to reconnect this wiring before reclosing every single panel The internal inspection of the modules can only be carried out by a specialist suitably 1 trained technician The visual inspection also includes checking any points where there is an evident change in color compar
138. y in charge of the installation in accor dance with the prevailing code and regula tions in force is responsible for proper di mensioning of the ground conductor based on the characteristics of the inverter used and those of the system in order to minim ize the resistance of the ground connection Connection must be made to the ground bar using a ground cable with grounding lug Figure 11 2 Figure 11 2 Connection of the protection Earth cable PE Table 11 1 Table of the minimum recom mended dimensions for the grounding ca bles AN POWEF DIE hanging the Shape of Power Installation and Operation Manual Page 63 of 132 PVI NEMA3R XXX US TL Rev 1 0 11 4 Connection of the AC power cables Remove the front plastic cover protection placed in front of the bars by means of the anchorage screws Connect the AC power cables as indicated in TB D Figure 11 3 or Figure 11 4 Figure 11 3 Connection of the AC power cables versions 2350kW without Trans former Respect the sequence of the phases indi cated on the specific labels It is important that the AC cables have an insulation rating of at least 600Vdc After the cable passage it is impor A tant to make sure that the open holes are closed e g by means of expanded foam This operation guarantees that no animals or dust can access the interior Figure 11 4 Conne
139. ystem and the firmware version in stalled ID Central PVI Monitor ID System Firmware Figure 14 8 Information menu AN POWEF IIe Changing the Shape of Power Installation and Operation Manual Page 86 of 132 PVI NEMA3R XXX US TL Rev 1 0 14 5 Firmware update The Aurora Central PVI Monitor is updated often and it might be necessary to update it periodically so that new functions can be implemented The update requires a very simple procedure de scribed below In order to take the steps described below it is necessary to have basic knowledge regarding 1 the creation of directories and renaming of files on Windows OS The first step for the update is checking that the latest firmware is available This can be done by connecting to www power one com In order to update Aurora Central PVI Monitor it is necessary to extract the SD card press it lightly to remove it and insert it in a reader connected to the PC At this point follow the instructions below 1 Check whether the SD card is formatted by right clicking on it and selecting Properties Make sure formatting is FAT and not FAT32 Open the SD card which will contain several folders language theme etc including the BOOT folder If it is not present create it Copy the file you downloaded from the Power One website into the BOOT folder and re name it as boot ben Remove the SD card from the computer using the safe hardware remov

Aurora Inverter Installation & Maintenance Manual for PVI

Contents

Download Pdf Manuals

Related Search

Related Contents

Aurora Inverter Installation &amp; Maintenance Manual for PVI

Contents

Download Pdf Manuals

Related Search

Related Contents

Aurora Inverter Installation & Maintenance Manual for PVI