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Emerson Liebert NXE 20kVA

1. 2 4 2 4 1 Battery Power Cables Connection Principles The following notes in conjunction with the diagrams illustrate the broad principles to be followed when fitting and connecting the majority of battery installations 22 Battery Installation 2 4 2 2 4 3 2 4 4 Fitting the Batteries 1 2 In general at least 10mm 3 8 must be left unobstructed on all vertical sides of the battery blocks to permit free air movement around the cells Clearance should be allowed between the top of the cells and the underside of the shelf above this is necessary for monitoring and servicing the cells When installing the batteries on racks always work from the bottom shelf upwards to prevent raising the centre of gravity Connecting the Battery 1 When the battery cabinet is installed on a raised floor the battery power cables and optional circuit breaker control cables can be routed to the UPS cabinet via the floor of the cabinet If the UPS and battery cabinet are located adjacent to each other and located on a solid floor these cables can be
2. Supported Status Value Units Battery Time Remaining 563 min Battery Voltage 546 9 Y Battery Current Charge Discharge 02 A Battery Charge Percentage 99 Battery Temperature 24 3 C Battery Charge Compensation False Battery Test Result Unknown Battery Charge Mode Float Supported Alarms Status Battery Under Test Normal Load On Battery Normal Charger Failed Normal Low Battery Shutdown Imminent Normal Battery Fault Normal Battery Contact Fail Normal Battery Converter Over Temperature Normal Battery Converter Over Current Normal Battery Converter Fail Normal UPS Load Joint Mode Normal Supported Settings Value Units E http 142 100 150 244 monitorfupsBattery htm Aset 050 gt Prerthons AN ne NA KENEN LE NANA 1234 63 Options For Assembly Inside the UPS Cabinet 8 1 4 Relay Card The Relay card provides voltage free contact closures for remote monitoring of alarm conditions Delivering On Battery On Bypass Low Battery Summary Alarm UPS Fault and On UPS signals the easy to install card integrates with AS 400 computers additional cable required and other relay contact monitoring systems The Relay card is rated for 24 VAC VDC at 1A and supported in any of the three NX Intellislot bays Table 26 Relay Card pin configuration Pin Function Operation 1 UPS Faul
3. RAM Remote Alarm Monitor NXAOCFXRAM Reguires RELAYCARD INT Modem card NXAOCFXMOD Extended LBS box NXAOUFXLBS vi SAFETY PRECAUTIONS This manual contains information concerning the installation and operation of this Emerson Network Power Liebert NX Uninterruptible Power System UPS This manual should be read before commencing installation The UPS must be commissioned and serviced by an engineer approved by the manufacturer or agent Failure to do so could result in personnel safety risk equipment malfunction and invalidation of war ranty The Liebert NX has been designed for Commercial Industrial use only and is not recommended for use in life support applications This is a low emission CLASS A Uninterruptible Power System UPS product In a residential envi ronment this product may nevertheless cause radio interference in which case the user may be required to take additional measures Conformity and Standards This equipment complies with CE directives 73 23 amp 93 68 LV Safety and 89 336 EMC with Aus tralia and New Zealand EMC Framework C Tick and with the following product standards for Unin terruptible Power System UPS lt EN IEC AS 62040 1 1 General and safety requirements for use in operator access area lt EN IEC AS 62040 2 EMC requirements Class A compliant EN IEC AS 62040 3 Performance requirements and test methods For more d
4. ee ce een ees 20 2 3 7 Moving the Battery Cabinets e aa eee eaaa aa eaaa ae 20 ZIS Cable ENEY ice aga a a ag E a a a an ole Seen tal a ER ats ete tls ga oh adie BA eh wae elite Boson uh 20 2 3 9 General Arrangement Drawings Anna 21 2 4 2 5 3 0 3 1 3 2 3 3 3 4 4 0 5 0 5 1 5 2 5 3 5 4 Battery Power Cables ri dd ae 22 2 4 1 Connection Principles kira a nera KNA Aa Tk na 22 2 4 2 Fitting the Batteries ag Ba ANA Ka ABA ga a Da AA AR a Ba AN a b aaa Tg aa aai 23 2 4 8 Connecting the Battery 23 2 4 4 Battery Room Design 23 Battery Controls amabas ARA BN A OS ad bed BA 23 UPS MULTI MODULE INSTALLATION cocccocococoooocococococcoccococccocoooo c y 24 General osori eee ede aie hh ao a Bl NE REEL AOE EE AEE IES LRA EO Sel us 24 Paralleled UPS Modules ii 25 3 2 1 Cabinet Installation sn td a Ig le Na ap a a dence Ge 25 3 2 2 External Protective Devices ii 26 3 23 Power Cables ooo a gress Be SAE ae D ene al a BEG BOIS Bea ego ae a zac 26 324 Control Cables 4 dig ane ban odes NA A A Ged A eh ea Ft Raed ESAS a Be 27 Hot Standby UPS Modules cc rererere eee e eee eens 27 331 Cabinet Installation ss 2 Ghat Secs eek Bw eee ew a es um Base Ka a a a Wis e ae 27 3 3 2 External Protective Devices inn 27 3390 Power Caples oct hovel a Wb Cheat ole ales ele Be Shale bh ta teed ete eee
5. Hi O i 1 P NXe 10 20kVA Top View Figure 21 Internal battery layout and connecting TOP LAYER BOTTOM LAYER Layer 5 W501 2 pcs Layer 4 Layer 3 Layer 2 Layer 1 W506 CB2 5 N W504 CB2 3 W508 CB2 1 34 Installation Drawings Figure 22 Internal battery layout E o E D A O D 151mm O x O D 160mm 562mm a CS D O E E T A G D d 160mm ca O iS e c O 160mm 3 CS L gt a C T A 160mm Battery y SS gt 136mm 35
6. The earthing and neutral bonding arrangement must be in accordance with local and national codes of practice Identify and make power connections for incoming cables according to one of the two procedures below depending on the type of installation Common Input Connections 4 For common bypass and rectifier inputs connect the AC input supply cables between the mains distribution panel and the UPS input mA mB mC N terminals and tighten the connections to 5Nm M6 Bolt Ensure correct phase rotation Split Bypass Connections 5 Ifa split bypass configuration is used connect the AC input supply cables to the rectifier input busbars nA mB mC N terminals and the AC bypass supply cables to the bypass input bA bB bC N terminals and tighten the connections to 5 Nm M6 Bolt Ensure correct phase rotation NOTE For split bypass operation ensure that the linking busbars between bypass and rectifier input are removed The AC input and the AC bypass supplies must be referenced to the same neutral point Output System Connections 6 Connect the system output cables between the UPS output oA oB oC N terminals and the critical load and tighten the connections to 5 Nm M6 Bolt Ensure correct phase rotation WARNING If the load equipment will not be ready to accept power on the arrival of the commissioning engineer ensure that the system output cables are safely isolated at their ends Single Module UPS Installation
7. gt Load 5d System gt Battery Records Sout kVA Sout kVA Battery voltage V history log Pout kW Pout kW Battery current A Qout kVAR Qout kVAR Battery temperature C Loadlevel Single unit no Remain Time Min Crest factor parallel data Battery capacity Battery boost charging Battery float charging Battery disconnected Language Settings Command gt Choices for Display contrasi Battery maintenance test UPS version display Date format set Battery capacity test UPS model System test Stop testing Communication address When configured input transformer voltages are displayed on the front LCD When not activated the values are hidden When configured output transformer voltages are displayed on the front LCD When not activated the values are hidden 52 Operator Control Panel and Display 7 1 5 Detailed Description of Menu Items The description that follows refers to the graphic LCD monitor window shown on Figure 28 UPS System Window This fixed pane window displays current time and date and identifies the UPS its configuration and its status Table 21 UPS system window Description Explanation Liebert NX UPS family name 2005 10 22 YYYY MM DD see Settings menu for other date formats 12 30 36 Current Time 24 hr HH MM SS format 020kVA 3x3 20kVA UPS rated output 3 x 3 3 phase input and output Configuration Single
8. Figure 23 Single unit block diagram with split bypass input SW1 D Maintenance Bypass Static Switch Sw1 C Rectifier Inverter Static Switch Bypass Input UPS AC Utility Input yy CB1 Neutral Wire Battery Charger Battery 5 1 1 Split Bypass Input Figure 23 illustrates the Liebert NX UPS in what is known as the split bypass configuration wherein a separate power switch to a dedicated bypass power source that also feeds the maintenance bypass line connects the static bypass line Where a separate power source is not available the bypass and rectifier input supply connections are linked 36 Operation 5 1 2 Static Transfer Switch The circuit blocks labeled Static Switch in Figure 23 contain electronically controlled switching cir cuits that enable the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line During normal system operation the load is connected to the inverter but in the event of a UPS overload or inverter failure the load is automatically transferred to the static bypass line To provide a clean no break load transfer between the inverter output and static bypass line the static switch activates connecting the load to bypass To achieve this the inverter output and bypass supply must be fully synchronized during normal operating conditions This is achieved through the inverter control electronics wh
9. 62 Options For Assembly Inside the UPS Cabinet 8 1 3 OC Web Card SNMP HTTP Network Interface Card This network interface card provides all real time data and status information as SNMPv1 traps for connection to a 10 100 baseT Ethernet network and in addition the same card will also transmit the same status information and all measured parameters for display via a Web browser This card is supported in the top middle and bottom Intellislot bays Figure 35 OC Web Card data summary window F Liebert OpenComms Web Card Microsoft Internet Explorer File Edit View Favorites Tools Help e Back Forward Stop Refresh Address 2 http 142 100 150 244 amp EMERSON Network Power monitor 5 Summary Device Information Yy 3 U Legend A Normal EM Marginal Fautt WN Absent Output Active Alarms No Alarms Present E Copyright Liebert Corporation 2000 200 aa D Astart 8 KO Geer thoms winzip Po Enza manua Gjexpense lmerosorte Ejtieberto HALSUA 1229 Figure 36 OC Web Card battery data summary 2 Liebert OpenComms Web Card Microsoft Internet Explorer File Edit View Favorites Tools Help Sa CA OA Back Forward Stop Refresh ft Favorites Mail Edit ry EMERSON Network Power monitor configure support Deven infonnatan Battery Updated July 13 2004 12 34 05PM
10. battery charged kW 1 6 1 8 2 2 ECO Mode full load battery charged kW 1 3 1 4 1 4 No Load kW 1 3 1 3 1 3 Forced Air Cooling front intake back exhaust L sec m hr 254 917 Input and output voltage 400VAC battery chargea full rated linear load 67 Technical Specifications Table 33 Mechanical characteristics Unit of Rated Power kVA Measurement 10 15 20 600x700x1400 Dimensions WxDxH mm in 23 9 16x27 5 8x55 Mass Mass without batteries kg Ib 180 397 204 450 204 450 Mass with internal batteries with typical 12Ah battery kg Ib 550 1213 574 1265 574 1265 Pantone 877 Silver grey Finish N A equivalent Becker Silver epoxy polyester powder 041 37 2 Protection Degree IEC 60529 N A IP20 finger proof with front doors open or closed Table 34 Rectifier AC input mains Unit of Rated Power kVA Measurement 10 15 20 1 380 400 415 Rated AC Input Voltage VAG 3 phase and sharing neutral with the bypass input 2 305V to 477V input voltage To erance VAC 304V to 208V output derated below 70 Frequency 2 Hz 50 60Hz tolerance 40Hz to 70Hz kW KVA full load Power Factor half load 0 99 0 98 kVA rated 3 Input Power maximum 4 10 0 15 9 13 9 19 6 18 4 24 0 Input Current A rated 3 maximum 4 15 22 20 28 27 35 Harmonic Current 2 Distortion THDI FL 3 3 3 E 10 seconds to reach full rated current bed Bas sec
11. ina ia ead RS Pe r Ba ana ancy Foe Bag pa td Haare le eal a 66 TECHNICAL SPECIFICATIONS 5x25 resin Gavin ce cock Em Wha ie ese Sw ea Se ae 67 Conformityand Standards a A So Aaa NBA BEN eas 67 iii Figure 1 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 FIGURES Model number nomenclature ii vi Residual current circuit breakers RCCB symbols 0 0 0 0 ccc eens 7 Auxiliary terminal block detail ask sosis kaa Bag geg BANK ene KK KE KERN NS 11 Input dry contacts ti NGGE a aides A aie bp a a a Rs E KANE IE Burn 12 Output dry contacts and EPO wiring sirier trir AAAA na 13 Battery startion UR ne a A bE A AA ee a Ne Bac ed ee A HREM oO a 16 Single temperature sensor and monitor board U2 eens 20 Battery cabinet bottom cable entry location rara 21 Battery cabinet with fuse or optional circuit breaker locations 22 Battery tooni design A Bek Be hintaan AN Wickes wee cee ds 23 Emergency power off connections 0 0 susunane renne na 24 Typical 1 N system block diagram with common input supply with separate batteries an
12. key to move the cursor to the menu at the top of the screen Press F2 and F3 left and right arrows as needed to select the Language menu Press F1 shift to move the cursor to the data and settings area of the LCD Use F2 and F3 up and down to select the required language Press the F4 enter key to accept the language selection Return to the main menu by repeatedly pressing F1 ESC as needed all text on the LCD will now be displayed in the selected language Aa A wh 47 Operating Procedures 6 10 Changing the Current Date and Time To change the system date and time 6 11 1 Ore 3 From the main menu press the F1 shift key to move the cursor to the menu at the top of the screen Press F2 and F3 left and right arrows as needed to select the Settings menu Press F1 shift to move the cursor to the data and settings area of the LCD Use F2 and F3 up and down to select the Date Time option then press F4 enter Position the cursor on the row in which the date and time are displayed then press F4 enter Using the F2 and F3 up and down keys enter the current time and date information Press F4 enter to save the settings then press F1 ESC to return to the main menu Command Password Password protection is used to limit the control functions accessible to the operator The default pass word is 123456 This password provides access to UPS and battery test functions 48 Operator
13. passed between the cabinets via the lifting apertures located in the lower sides of the cabinets In general it is recommended that the inter connecting cables be fitted to the batteries within their particular level before fitting the inter level connecting cables followed finally by the cables to the circuit breaker An insulating shroud should be fitted to each terminal after its connection has been made When connecting the cables between the battery string ends to the optional circuit breaker always connect the circuit breaker end of the cable first Battery Room Design Whatever the type of mounting system selected the following conditions should be noted Cell Layout 1 Whichever battery mounting system is used the batteries should be arranged to prevent the pos sibility of simultaneous contact with two exposed live parts having a potential greater an 150V Where this is not possible insulated terminal shields must be installed and insulated cables must be used for connections Service Platform 2 The service platform or duckboard must be slip proof insulated from the floor and at least one metre 39 in wide Connections 3 All connections must be as short as possible Battery Protection Fuses Circuit Breaker 4 The battery circuit breaker is generally installed at the front of the battery room See 2 5 Bat tery Control for details on connecting the circuit breaker box available for the Liebert NX Figure 9 Batter
14. then verify the bypass voltage and frequency presented to the UPS Check the external bypass supply if it is found to be faulty If the utility is likely to trigger this alarm frequently the bypass limit can be changed a little larger through the configuration software according to the customer s agreement This alarm is triggered by an inverter software routine when the inverter and bypass waveforms are misaligned by more than 6 degrees in phase This alarm resets automatically once the condition is no longer true Inverter Asynchronous 1 First check if the alarm Bypass unable to trace or Bypass abnormal occurs If so solve it first 2 Verify the waveform of the bypass voltage If it is too distorted ask the customer to verify and seek any possible measurements Inverter Fault Inverter output voltage beyond limits Load transfers to bypass The temperature of the inverter heat sink is too high to keep inverter running This alarm is triggered by the signal from a temperature monitoring thermostat on the inverter bridge heat sink The UPS will recover automatically after a 5 minute delay from the disappearance of the overtemperature signal If the overtemperature condition is true then check for and verify 1 high ambient air temperature 2 blocked cooling airway 3 any fan failure 4 prolonged inverter overload Inverter Overtemp Fan Fault At least one of the cooling fans has failed At lea
15. 43 42 30 29 28 44 1 Input mains current listed for common rectifier and bypass AC input For split input the rectifier current is 94 of the currents listed 2 Non linear loads switch mode power supplies affect the design of the output and bypass neutral cables The current circulating in the neutral cable may exceed the nominal phase current A typical value is 1 5 In 3 Protective earth cable Connect each cabinet to the main ground system must follow the most direct route possible The earth conductor shall be sized in accordance with the AC supply fault rating cable lengths and type of protection Typical cross sectional areas are 2 5mm 10kVA 6mm 15kVA 10mm 20kVA as per AS IEC 60950 1 4 When sizing battery cables a maximum volt drop of 4 VDC is permissible at the current ratings given in Table 1 The load equipment is generally connected to a distribution board containing individually protected busbars rather than connected directly to the UPS output The output cables from paralleled units to the parallel distribution bus should be of same length so as to optimise the sharing of current Do not form coils so as to minimise the formation of electromagnetic interference 5 For terminal location refer to 4 0 Installation Drawings A WARNING Failure to follow adequate earthing procedures may result in electromagnetic interference or in hazards involving electric shock and fire Table 2 Distance from floor to
16. Internal UPS Battery Connection 7 The battery consists of a series string connection of 5 x 8 or 10 x 12V 6 cell battery blocks a b c d Ensure that the 8 or 10 battery blocks in each tier tray are interconnected Connect the positive neutral and negative cables to the UPS terminals Plug in the cables between the tiers Ensure correct polarity battery string series connections i e intertier and interblock connections are from positive to negative terminals WARNING Hazardous Battery Terminal Voltage 480VDC Ensure correct polarity of string end connections to the UPS terminals i e positive to positive negative to negative and neutral to neutral but leave these UPS terminal cables disconnected until connection is authorised by the commissioning engineer Ensure correct polarity of string end connections to the battery circuit breaker and from the battery circuit breaker to the UPS terminals i e positive to positive and negative to negative but disconnect one or more battery cell links in each tier Do not reconnect these links and do not close the battery circuit breaker before authorised by the commissioning engineer 8 Refit all protective covers removed for cable installation 10 Single Module UPS Installation 1 7 Control Cables and Communication 1 7 1 Monitor Board Features Based on your site s specific needs the UPS may require auxiliary connections to manage the battery system ex
17. a Nan 4 L1 L2 L3 N L1 L2 L3 N E E aa Q1EXT 9 Q2EXT QUPS eee A 5 PQBYP Distribution Cabinet See A TO LOAD 25 UPS Multi Module Installation Figure 12 Dry contacts multiple UPS modules with distribution panel Input Distribution UPS N M3 Board M3 Board M3 Board X3 X3 X3 Ext Maint Ext Out Ext Maint Ext Out Ext Maint Ext Out TN MN NX TN nan AN 4 Q1Ext Li Q2Ext ai QnExt ues Distribution Panel aByp _ To Load 3 2 2 External Protective Devices Refer to the instructions in 1 0 Single Module UPS Installation 3 2 3 Power Cables The wiring of power cables is similar to that of single module system The Bypass and the Main input sources must be referenced to the same neutral potential and input earth leakage monitoring devices if installed must be located upstream of the common neutral sinking point Refer to the instructions in 1 0 Single Module UPS Installation NOTE The length and specification of power cables including the bypass input cables and UPS output cables should be the same This facilitates load sharing when operating in bypass mode 26 UPS Multi Module Installation 3 2 4 Figure 3 3 3 3 1 3 3 2 Control Cables Intermodule Control Shielded and double insulated control cables available in lengths of 5 10 and 15 meters must be must be interconnected in a ring configura
18. aN y 28 Dual Bus System msi id MERASA SRG nds Sid bee dd Ade Ochs te AAA hes 28 SAA Cabinet Tas ball abon san atei AR Spotless aa KG ah Kaga ag Hache S09 a a ghee nenas giant 28 3 4 2 External Protective Devices aaa e eea eaaa aee 29 34 3 Power Gables ap aa EA A A Na apa bai are aaa aga a aa a a a a A Ba si 29 3 4 47 Control Wirest it gang a A Ba jaka aaah a at do sods a a Teen 30 3 4 5 Extended Dual Bus Synchronization Option DBS Interface Box 30 INSTALLATION DRAWINGS 3 x doa bo be mkn dina Aaa 31 OPERATION 50 pure ere POLO os ABE bia ak eee ede ADA 36 INTO bles in kona ii AE A ARA BBB KN e EN E ASA a 36 STD Split Bypass Input xe sede A ok nes A A BEN Dd a ga a NG 36 531 2 A Static Transfer Switch oc i053 ts doe CO HG once Sable Ol iS ati eh 08 37 5 1 3 Battery Temperature Compensation ccc eee eea 37 5 1 4 Redundant Control Power Supply Board ahhh 38 blih Socket Outlet ma ati O wine 38 Multi Module UPS 1 N coco 38 5 2 1 Features of NX Multi Module UPS Configurations o 39 5 2 2 Requirements for Paralleling of UPS Modules o n nananana ccc eee ee 39 Modes Of Operations a an isa a he ae alae eed ead 39 DSL Normal Mode oi das asana exe dre dd tds 39 5 3 2 Battery Mode Stored Energy Mode 39 5 3 3 Auto Restart Mode ee eee eee a ap gg ah aba a aaa akar 39 9 9 4 Bypass Mode tit dale lense nag a dika dt IA e 40 5 3 5 Maintena
19. batteries are protected against overcurrents through a DC compatible dis connect device UPS Output Any external distribution board used for load distribution shall be fitted with protective devices that discriminate with those used at the bypass input to the UPS and with the UPS overload characteris tics see Table 36 Power Cables The cable design must comply with the voltages and currents provided in this section follow local wir ing practices and take into consideration the environmental conditions temperature and physical support media For cable entry terminal refer to Figure 19 A WARNING Before starting the UPS ensure that you are aware of the location and operation of the external isolators that connect the ups input bypass supply to the mains distribution panel Check that these supplies are electrically isolated and post any necessary warning signs to prevent their inadvertent operation Single Module UPS Installation Table 1 Maximum steady state AC and DC currents Nominal Current Amps Busbar Stud Size Input Mains Current 12 With Full Battery Output Current Input Output Recharge at Full Load Bypass 3ph N 3ph N Cables External UPS Battery at Hole battery Torque Rating End of Dia Cables Load KVA 380V 400V 415V 380V 400V 415V Discharge Bolt mm Bolts Nm 10 22 21 20 15 14 13 22 15 33 32 31 22 21 20 33 M6 6 M6 5 20 44
20. battery terminal voltage will exceed 400VDC and is hazardous Eye protection should be worn to prevent injury from accidental electrical arcs Remove rings watches and all other metal objects Use only tools with insulated handles Wear rubber gloves If a battery leaks electrolyte or is otherwise physically damaged it must be replaced stored in a container resistant to sulfuric acid and disposed of in accordance with local regulations If electrolyte comes into contact with the skin the affected area should be washed immediately with water Preliminary Checks Before installing the UPS please carry out the following preliminary checks 1 Visually examine the UPS and battery equipment for transit damage both internally and externally Report any damage to the shipper immediately 2 Verify that the correct equipment is being installed The equipment supplied has an identification tag on the back of the main door reporting the type size and main calibration parameters of the UPS Single Module UPS Installation 1 3 1 3 1 1 3 2 1 3 3 Location UPS Room The UPS and its internal battery is intended for indoor installation and should be located in an envi ronment with clean air and with adequate ventilation to keep the ambient temperature within the specified operating range see Table 31 All models in the Liebert NX UPS range are air cooled with the aid of internal fans Cold air enters through ventilation g
21. connected to the normally open or normally closed remote stop switch between these two terminals using shielded cable see Figure 4 and Table 7 If this function is not used terminals X2 3 amp 4 must be opened and X2 1 amp 2 must be closed Table 7 EPO input contact relays Position Name Description J28 1 EPO_NC EPO Activated when shorted to J28 2 J28 2 EPO_NC EPO Activated when shorted to J28 1 J28 3 EPO_NO EPO Activated when opened to J28 4 J28 4 EPO_NO EPO Activated when opened to J28 3 NOTE The emergency stop action within the UPS shuts down the rectifier inverter and static bypass It does not internally disconnect the input power supply To disconnect ALL power to the UPS open the upstream feeder breaker s when the remote EPO is activated NOTE Normally closed EPO X2 1 2 these terminals are supplied factory linked on the monitor board X3 Ancillary Control and Alarms X3 IN DRY Environmental Battery Ground Fault and Generator Contacts The UPS accepts external signalling from voltage free dry contacts connected to finger proof push in terminal X3 IN DRY Subject to prior software programming the signalling is accepted by the UPS when connection between the relevant terminal and the 12V terminal is altered Cables connected to X3 IN DRY must be segregated from power circuits for screening purposes double insulated and of a typical 0 5 to 1mm cross section area for maximum runs betwe
22. connection point on the equipment UPS 10 20 kVA Minimum Distance UPS mm in Rectifier A C Input supply 284 11 1 5 Bypass A C Input supply 284 11 1 5 UPS Output A C 369 14 1 2 Battery Power 369 14 1 2 Auxiliary cables Monitor board U2 1104 43 1 2 Single Module UPS Installation 1 6 1 Cable Termination NOTE The operations described in this section must be performed by authorised electricians or qualified technical personnel If you have any difficulties do not hesitate to contact our Customer Service and Support Department See the back page of this manual for contact information Once the equipment has been finally positioned and secured connect the power cables as described in the following procedure Refer to the appropriate cable connection drawing in 4 0 Installation Drawings 1 Verify that the UPS equipment is isolated from its external power source and all the UPS power isolators are open Check that these supplies are electrically isolated and post any necessary warning signs to prevent their inadvertent operation 2 Open the door to the UPS cabinet and remove the front protective cover to gain access to the connections bars 3 Connect the safety earth and any necessary bonding earth cables to the copper earth busbar located on the floor of the equipment below the power connections All cabinets in the UPS must be connected to the user s ground connection NOTE
23. following general battery safety precautions and warnings should be observed at all times A battery can present risk of electric shock or burn from high short circuit currents The full nominal string voltage when the battery blocks are interconnected is 480VDC which is hazardous Only qualified personnel should install or service batteries Eye protection should be worn to prevent injury from electrical arcs e Remove rings watches necklaces bracelets and all other metal objects Use only tools with insulated handles Wear rubber gloves and a rubber apron when handling batteries Ifa battery leaks electrolyte or is otherwise damaged it should be placed in a container resistant to sulfuric acid and disposed of in accordance with local regulations If electrolyte comes into contact with the skin the affected area should be washed immedi ately with plenty of clean water Batteries must always be disposed of according to local environmental laws When replacing batteries use the same number and type that were originally fitted Disconnect charging source before connecting or disconnecting battery terminals Determine whether the battery is inadvertently grounded If it is inadvertently grounded remove the source of the ground Contact with any part of a grounded battery can result in electrical shock 18 Battery Installation 2 3 Battery Cabinet 2 3 1 Introduction This cabinet can als
24. ins dt Gas 60 Battery ground fault detection set connections eee ene nes 61 Redundant power module fan set 62 Communication bays and cable location 62 OC Web Card data summary Wide 63 OC Web Card battery data summary 0 na 63 SiteNet MultiPort4 Intellislot pin configuration eee nes 65 OGAH Web card rap a tie ya he ela es MR tra neo yas ha ea E eve cent ica Gack Seats a ee eGo ean A 66 Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 TABLES Distance from floor to connection point on the equipment 0 ees 8 Maximum steady state AC and DC currents eee eens 8 Input idty contacts at XB A KAE a ieee R E A eR a EN a Re a 12 Maintenance bypass cabinet Interface 12 External circuit breaker interface ii 13 Output dry contatt relay nee dd es E A ARE EE BN 13 EP Oanput contact rolas e haters o s ND eden san a a a ab 14 Input dry contact Telay S5 sr ag GA BE GENEA GN TB EN eee Oe Ra BE eee BE Ng eee Gg 14 Dimensions and weight 0 aa eaaa aaa aa aa eaaa eaaa aaa 19 UBS operatineimodes A lan sadap a Sas da a td aia bce tut dae o were ng 42 Rotar
25. installation must be segregated from all but appropriately qualified maintenance personnel by locating the cells in a key lockable cabinet or in a purpose designed dedicated battery room When the batteries require maintenance these precautions must be taken The rotary switch must be turned to Maint position The input circuit breaker CB1 must be opened The ANDERSON connector must be disconnected E E NOTE The fuse on the battery EMI board UHK241A2 PCB is 600VDC 30A High Speed Fuse NOTE Full safety instructions concerning the use and maintenance of UPS batteries are provided in the appropriate battery manufacturers manuals The battery safety information contained in this section relates to key considerations that must be taken into account during the installation design process and might affect the design outcome depending on localised conditions WARNING Hazardous battery voltage present behind covers No user serviceable parts are located behind covers that require a tool for their removal Only qualified service personnel are authorised to remove such covers When using internal batteries in 10 to 20kVA units the batteries are always connected through power fuses to the UPS and to the segregated terminal bars available for connection to an external battery Isolate any internal battery connections before attempting to access the segregated terminal bars available for connection to an external battery The
26. lIf a split bypass is used install separate protective devices for the rectifier and for the bypass in the incoming mains distribution panel NOTE Rectifier and bypass input sources must be referenced to the same neutral potential NOTE For IT power systems four pole protective devices must be used external to the UPS both upstream of the input distribution panel and downstream toward the load Single Module UPS Installation Earth Leakage RCD Any residual current detector RCD installed upstream of the UPS input supply must be sensitive to DC unidirectional pulses Class A insensitive to transient current pulses and must have an average sensitivity adjustable between 0 3 and 1A Figure 1 Residual current circuit breakers RCCB symbols 1 5 2 1 5 3 1 6 ON AN To avoid false alarms earth leakage monitoring devices when used in systems with split bypass input or when used in paralleled UPS configurations must be located upstream of the common neutral sinking point Alternatively the device must monitor the combined four wire rectifier and split bypass input currents The residual earth current introduced by the RFI suppression filter inside the UPS is greater than 3 5mA and less than 300mA Liebert recommends verifying the selectivity with all other differential devices both upstream of the input distribution board and downstream toward the load External Battery The UPS and its associated
27. mode Battery Period Testing Automatic periodic battery maintenance discharge test 20 capacity discharge Batt Capacity Testing User initiated battery capacity discharge test 100 capacity discharge Batt Maint Testing User initiated maintenance discharge test 20 capacity discharge UPS System Testing User initiated UPS self test Inverter in Setting Inverter starting up and synchronising Rectifier in Setting Rectifier starting up and synchronising MBP T cabinet Fan Fault Maintenance bypass cabinet fans fault Ext Input TX Overtemp External Input Isolation Transformer Over Temperature Ext Output TX Overtemp External Output Isolation Transformer Over Temperature Battery Room Alarm Environment in Battery Room Needs Attention Rotary Sw Test Pos Rotary switch is in test position Rotary Sw Normal Pos Rotary switch is in normal position Rotary Sw Bypass Pos Rotary switch is in bypass position Rotary Sw Maint Pos Rotary switch is in maintenance position Battery Contactor Open Battery Contactor Open Battery Contactor Close Battery Contactor Closed Battery Reverse Connect the battery again and check the wiring of batteries No Battery Check the battery and the wiring of batteries Auto start After UPS was shutdown at EOD inverter auto starts when utility restore 58 Operator Co
28. rules the following requirements apply 1 All UPS modules must be of the same rating and must be connected to the same bypass source 2 The bypass and the main input sources must be referenced to the same neutral potential 3 Any RCD Residual Current monitoring device if installed must be of an appropriate setting and located upstream of the common neutral bonding point Alternatively the device must monitor the combined 4 wire rectifier and split bypass input currents of the system Refer to the High Leakage Current Warning on page 1 4 The outputs of all UPS modules must be connected to a common output bus NOTE Optional isolation transformers are available for applications where sources do not share the same neutral reference or where the neutral is not available Modes of Operation The NX UPS is an on line double conversion reverse transfer UPS that permits operation in these modes Normal Mode Battery Mode Stored Energy Mode Auto Restart Mode Bypass Mode Maintenance Mode Manual Bypass ECO Mode Parallel Redundancy Mode Hot Standby Mode Frequency Converter Mode Normal Mode The UPS inverter continuously supplies the critical AC load The rectifier charger derives power from the AC mains input source and supplies DC power to the inverter while simultaneously FLOAT or BOOST charging its associated backup battery Battery Mode Stored Energy Mode Upon failure of the AC mains input power the inverter whic
29. single UPS y quency 0 1 to 1 0Hz sec paralleled UPS EN 50091 3 1 4 58 crest facto PO Es r3 1 output voltage within half a cycle Factory set to 400V 380 or 415V selectable by commissioning engineer Factory set to 50Hz 60 Hz selectable by commissioning engineer Frequency converter operation also selectable IEC 62040 3 EN 50091 3 also for 0 100 0 load transient Transient recovery time return to within 5 of steady state 69 Technical Specifications Table 37 Bypass mains input Unit of Rated power kVA Measurement 10 15 20 380 400 415 V Rated AC Voltage VAC three phase four wire sharing neutral with the rectifier input and providing neutral reference to the output Rated Current 380V A 15 23 30 400V A 15 22 29 415V A 14 21 28 135 long term Overload Capacity 170 10 min 1000 100 ms Upstream Protection N A Thermomagnetic circuit breaker rated up to 125 Bypass Line by others of nominal output current IEC 60947 2 curve C Current Rating of Neutral Cable A 1 7xIn Frequency 2 Hz 50 60 Transfer Time between Synchronous transfer lt 0 5 bypass and inverter ms Asynchronous transfer default 15 ms 50 Hz 13 3 ms 60 Hz yp or 40 60 80 100 ms selectable Upper limit 10 15 or 20 default 15 Bypass Voltage Tolerance VAC Lower limit 10 20 30 or 40 default 20 delay time to accept steady bypass voltag
30. will shut down and the battery is isolated to avoid further battery discharge EOD is settable from 1V to 1 9V per cell Battery Low Warning Time Settable between 3 and 60 minutes The default is 5 minutes 5 4 2 Advanced Functions Software Settings Performed by the Commissioning Engineer 5 5 Battery Self Test and Self Service At periodic intervals 20 of the rated capacity of the battery will be discharged automatically at a rate equal to 15 kW of the rated UPS kVA capacity During discharge the rectifier provides the balance necessary to feed the load The minimum amount of load must exceed 20 of the nominal rat ing of the UPS module If the load is less than 20 auto discharge cannot be executed The periodic interval can be set from 30 to 360 days The periodic testing can also be inhibited Conditions Battery fully charged load 20 100 of rated UPS capacity Trigger Manually through LCD panel or automatically lt Battery Self Test Interval 30 360 days default setting is 60 days Battery Protection settings by commissioning engineer Battery Undervoltage Pre warning The battery undervoltage pre warning occurs before the end of discharge After this pre warning the battery should have the capacity for 3 remaining minutes discharging with full load The time is user configured from 3 to 60 minutes Battery End of Discharging EOD Protection If the battery voltage is lower than the EOD the battery con
31. 2V Power 1 Must be configured by configuration software before becoming active 2 When activated the charger current can be limited via software to a percentage of the full charger current 0 100 3 Activating this feature turns the battery charger off 1 8 2 Maintenance Bypass Cabinet Interface J26 and J30 are the MBC interface Table 4 Maintenance bypass cabinet interface Position Name Description J26 1 TIT Input transformer overtemperature NC J26 2 AUK Reserved J26 3 12V 12V Power J26 4 GND Power Ground J30 1 FUSE Reserved J30 2 F_FAN Fan Fail Alarm NC J30 3 T OT Output Transformer Overtemperature NC J30 4 AUX_O Reserved 1 Must be configured by software before becoming active NOTE All auxiliary cables must be double insulated Wire should be 0 5 1 5mm 16 20AWG stranded 2 12 Single Module UPS Installation 1 8 3 External Circuit Breaker Interface J10 is the interface to any external battery circuit breaker BCB Table 5 External circuit breaker interface Position Name Description J10 1 DRV BCB Driver Signal Output N O J10 2 FB BCB Contact State Input N O J10 3 GND Power Ground J10 4 OL BCB On Line Input This pin will become active when BCB interface is connected N O NOTE All auxiliary cables of terminal must be double insulated Wire should be 0 5 1 5
32. 5 with 24 hr safety timeout selectable 8 30 hr boost mode inhibit also selectable End Of Discharge V cell VRLA 1 63 V cell selectable from 1 60 1 90 V cell Auto Inverse EOD voltage x discharge current mode The end of discharge voltage increases at low discharge currents 2 4 V cell selectable from 2 3 2 4V cell Battery Charge V cell Constant current and constant voltage IU charge mode Programmable auto trigger or inhibit of boost mode Battery Charging Power kW 2 5 5 5 max current adjustable A 3 75 7 5 7 5 At low input voltage the UPS recharge capability increases with load decrease up to the maximum capacity indicated Table 36 Inverter output to critical load Unit of Rated Power kVA kW Measurement 10 8 15 12 20 16 380 400 415 V Rated AC Voltage VAC three phase four wire with neutral referenced to the bypass neutral Frequency 2 Hz 50 60 110 for 60 min Overload Rated a gt 150 for 200 msec Fault Current Rated 340 current limitation for 200 msec Non linear load capability Rated 100 Neutral current capability Rated 170 Steady state voltage stability os Hoos aba ada d Transient voltage response 5 Total Harmonic Voltage 3 Distortion THDV Yo 1 linear load 4 non linear load Synchronisation Window Rated freguency je T AN 0 5 to 1 Hz sec de Arda ge rate Hz sec selectable 0 1 to 3Hz s
33. Control Panel and Display 7 0 OPERATOR CONTROL PANEL AND DISPLAY 7 1 Introduction The operator control panel and display is located on the front door of the UPS The panel is the access point for operator control and monitoring of all measured parameters UPS and battery status and of event and alarm logs Figure 27 UPS control and display panel The operator control panel is divided into three functional areas Mimic Power Flow Chart O6 Status Output Graphic LCD monitor with menu keys Table 12 UPS control and display panel components Direct Access keys INVERTER ON INVERTER OFF FAULT CLEAR SILENCE ON OFF Component Function Button Function 1 Rectifier Input AC to DC EPO Emergency Power Off button Battery DC Back up Inverter ON Inverter start button Bypass Input Inverter OFF Inverter shutdown button Inverter DC to AC Fault Clear Reset button Load AC Output Silence On Off Audible Alarm Mute UPS Status and Alarm indicator Audible Alarm Buzzer _ F1 F4 Help LCD Menu keys COIN OD om AJOJN Emergency Power Off Button cover 49 Operator Control Panel and Display 7 1 1 Mimic Power Flow The LEDs mounted on the mimic flow chart represent the various power paths and current UPS oper ational status Table 13 Rectifier indicator 1 Green Rectifier in Normal Operation Flashing Input AC Normal
34. ECO Master Slave or Unit 1 Single single double conversion unit ECO single stand by unit with double conversion fall back Master master in a 1 1 Hot Stand By system Slave slave in a 1 1 Hot Stand By system Unit 1 of max 6 double conversion units in a parallel system Status Normal Warning or Fault Normal UPS operating Normal Warning System attention required e g AC Input Failure Fault UPS Fuse or Hardware Failure Menu and Data Window Use the horizontal arrow keys to navigate between any of the selectable menu and data windows Table 22 Descriptions of UPS menus and data window items Menu Type Item Type Explanation L N voltage V Phase voltage L N current A Phase current Mains Frequency Hz Input frequency input L L voltage v Line line voltage Power factor Power factor L N voltage V Phase voltage TX Input Ng L L voltage V Line line voltage L N voltage V Phase voltage Bypass Frequency Hz Bypass frequency L L voltage A Line line voltage L N voltage V Phase voltage L N current A Phase current Output Frequency Hz Input frequency L L voltage V Line line voltage Power factor Power factor L N voltage V Phase voltage TX Output L L voltage V Line line voltage Sout KVA Sout Apparent power Pout kW Pout Active power Load Qout kVAR Qout Reactive power Loadlevel The percent of the UPS rating load Crest facto
35. Io Liebert POWER AVAILABILITY Liebert NX USER MANUAL 10 20kVA 50 60Hz 400V 4 EMERSON Network Power 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 2 0 2 1 2 2 2 3 TABLE OF CONTENTS SINGLE MODULE UPS INSTALLATION aaa aa eaaa aaa aaa aaa aa aaa 3 TAtroductiON es et GN ABANGAN ee KANG NE KAG WS AKNG AA AKE DR A A a 3 Preliminary Check 4 eyed ccs an ana AA Ga a aa NE Wana a BANG Age a ag BAP ES ni KAN uu 3 LOCATION aran aa D a a Ca A ROAR BIG AT ts te dt BE R NG Doe 4 LIL UB Rooms Ben Bee LAN sae We at s ONES Siem Se wake eg eed he erate a e ted 4 1 3 2 External Battery Room 4 1333 Storan E O a Gg coup trea SMart A adi a ee te tla Cade Maat elec ag aia Dei 4 Position Gv 5 ak eS RAE a a bed Ae Bl AA A teh Ave aie ae Soe ted A Ba we 5 PAT System Cabinets a ana KA oe dc A a Maca ed data age sete hs Ma bg BB 5 ALDO LO 2OKV ASU PS rina sa e e aa a tae baie tates eee OO nee das 5 1 4 9 Moving the Cabinets sais 00105000201 BAT a WA Mags oie BAR Nate beard es 5 O Pe a E a Ba ON gue dba een Us apd Bartel RE Ba E dome Maude hap ca 6 14195 SACCESS ag esse sce al aga dd eels cido Sate econ E Baa igre a a E ya GE A Rea E A EA aia Gs 6 14 6 Final Positioning onta nan ged grana Pads ede a Baja at a Sas Gan gg pa Mead ang ido Tenaga 6 LA Floor Anchoting sit si a dt Tn SP gg Aa Bebe saia 6 1 478 Cable Entry vio sa d baba tt AN ata an Tan E a date NN dt 6 External Protective Devi
36. Operation 5 0 OPERATION A WARNING Hazardous Mains and or Battery Voltage present behind covers No user serviceable parts are located behind covers that require a tool for their removal Only qualified service personnel are authorised to remove such covers 5 1 Introduction Liebert s NX Uninterruptible Power System system provides continuous high quality AC power to your business critical equipment such as telecommunications and data processing equipment The NX UPS supplies power that is free of the disturbances and variations in voltage and frequency com mon to utility power which is subject to brownouts blackouts surges and sags The NX utilizes the latest in high frequency double conversion pulse width modulation PWM tech nology and fully digital controls to enhance its reliability and increase the ease of use The standard NX consists of the UPS and internal batteries in a compact single cabinet As shown in Figure 23 the AC utility source is input at CB1 and the rectifier converts the AC utility into DC power The inverter converts that DC power from the utility or DC power from the batteries into AC power for the load The batteries power the load through the inverter in the event of a power failure The utility source can also power the load through the static bypass If maintenance or repair of the UPS is necessary the load can be switched without interruption in service to the maintenance bypass
37. PS EN 50091 3 IEC 62040 3 AS 62040 3 VFI SS 111 The product standards in Table 30 incorporate standards for safety IEC EN AS60950 electro relevant compliance clauses with generic IEC and EN magnetic emission and immunity IEC EN AS61000 series and construction IEC EN AS60146 series and 60529 Table 31 Environmental characteristics Unit of Rated power kVA Measurement 10 15 20 Acoustic Noise Level at 1 Meter 39 in dBa 51 0 51 5 51 6 lt 1000m 3280 ft above sea level Altitude of Operation m ft de rate power by 1 per 100m 328 ft between 1000 and 2000 m 3280 and 6560 ft Relative Humidity 0 to 95 non condensing 0 to 40 32 104 Operating Temperature C F Battery life is halved for every 10 18 increase above 20 68 Storage Transport Temperature for UPS C F 20 to 70 4 to 158 Recommended Battery Storage C F 20 to 30 4 to 86 F Temperature 20 C 68 F for optimum battery storage Table 32 Overall efficiency heat losses and air exchange Unit of Rated Power kVA Measurement 10 15 20 Normal Mode dual conversion 90 4 91 2 91 3 ECO Mode 93 2 94 2 94 7 Inverter Efficiency DC AC battery at nominal voltage 480VDC and full rated linear load Rated Power kVA 10 15 20 Battery Mode 91 3 91 7 92 0 Heat Loss amp Air Exchange Ventilation Rated Power kVA 10 15 20 Normal Mode full load
38. be configured as distributed redundant systems with inde pendent outputs that nevertheless are synchronised through a Load Bus Synchroniser LBS so that critical loads can be seamlessly transferred from one system to another See 5 3 Modes of Opera tion for more information 38 Operation 5 2 1 5 2 2 5 3 5 3 1 5 3 2 5 3 3 Features of NX Multi Module UPS Configurations 1 The hardware and firmware of single module UPS units is completely compatible with the requirements of a multi module system Multi module configuration is achieved merely through settings in configuration software 2 Parallel control cables are connected in a ring providing both performance and redundancy Dual bus control cables are connected between any two UPS modules of each bus The intelligent paralleling logic provides the user with maximum flexibility For example shutting down or starting up UPS modules in a parallel system can be done in any sequence Transfers between Normal and Bypass modes of operation are synchronised and self ecovering e g following overloads and their clearance 3 The total load of the multi module system can be queried from each module s LCD display Requirements for Paralleling of UPS Modules A group of paralleled modules behave as if it were one large UPS with the advantage of presenting higher reliability In order to assure that all modules are equally utilised and to comply with relevant wiring
39. but rectifier not operating Green Red Rectifier Failed Off Rectifier Not operating Input AC Not Available or out of normal range Table 14 Battery indicator 2 Green Battery Normal but discharging and powering the load Flashing Battery End of Discharge pre warning Green Battery abnormal Failed Absent or Polarity Reversed or Battery Red Converter abnormal Failed overcurrent overtemperature Off Battery and Converter Normal Battery charging Table 15 Bypass indicator 3 Green Load on Bypass power Red Bypass not available out of normal range or Static bypass switch fault Off Bypass Normal load not on bypass Table 16 Inverter indicator 4 Green Inverter Normal and powering the load Flashing Inverter ON starting up synchronising Green or standing by ECO mode Red Inverter failed Off Inverter not operating Table 17 Load indicator 5 Green UPS output ON and Normal Red UPS output ON and Overloaded Off UPS output OFF Table 18 Status Alarm indicator 6 Green Normal Operation Yellow UPS Warning e g AC Input Failure Red UPS fault e g Fuse or Hardware failure 7 1 2 Audible Alarm Buzzer UPS activity is accompanied by the following sounds Table 19 Audible alarm key Single beep Direct Access key acknowledgement One beep UPS Warning e g AC Input Failure per second Continuous Fault
40. by system the master must be turned on first External Protective Devices Refer to the instructions in 1 0 Single Module UPS Installation 27 UPS Multi Module Installation 3 3 3 Power Cables The wiring of power cables is similar to that of single module system except that the output of the upstream UPS is fed into the bypass input of the downstream UPS and the load is fed by the down stream UPS through its inverter or bypass The bypass and the main input sources must be refer enced to the same neutral potential and input earth leakage monitoring devices if installed must be located upstream of the common neutral sinking point Refer to the instructions in 1 0 Single Mod ule UPS Installation No control wires other than those specified for the single module configuration are required Figure 14 Hot standby configuration 3 4 3 4 1 INPUT DISTRIBUTION UPSTREAM DOWNSTREAM Mains L1 Bypass L1 Mains L1 Bypass L1 L2 L3 N L2 L3 N L2 L3 N L2 L3 N RECTIFIER STATIC oa oo E E Pein matah L1 L2 L3 N TO LOAD Dual Bus System Cabinet Installation The Dual Bus System consists of two independent UPS configurations each consisting of one or more UPS modules Dual Bus Systems are high availability configurations suitable for loads with multiple input terminals For single input loads an optional Static Transfer Switch may be added and the stan dard Load Bus Synchroniser activa
41. ces ii 6 15 1 Rectifier and Bypass Imputado Re hg wae 6 1 5 2 Exter al Ba tye ty iiss ecco RDA ESA RR RA TS A AE FORE CDI 7 1 95 95 UPS Outputs ura ds Ba a rs ld mana anang 7 Power Cables oir A oh tht A a TA A 7 1 61 Cable Terminator ad 9 Control Cables and Communication inn 11 1 7 1 Monitor Board Features ina eame daaa aa i eee eee een aan meg a 11 Dry Contact s mui as Pros ara 12 1821 Input Dry Contacts ses a a Bae ee a then oo 12 1 8 2 Maintenance Bypass Cabinet Interface or 12 1 8 3 External Circuit Breaker Interface ii 13 1 84 Output Dry Contacts aana eke b kag Kan BI a 13 1 8 5 Emergency Power Off Input 14 1 8 6 External Bypass Switch Interlock hn 16 87 Battery Start Facility 020 a ta BAG na ag at Akers BANG a GAB thee 16 BATTERY INSTALLATION see me an A RT A ee Bem mo an 17 Introduction sana sana sun AN E ERE SW Led BES ba A de 17 DALE yes at BN he a eee Ga ae A an SA ana 18 Battery Cabinet iia a cheered id as Mice ied ang Sade ga a hese ES a eh ANS tii 19 2 3 Introduction La bu Berau Be BAB Se SR BRA iB D NA 19 2 3 2 Temperature Considerations ccc na 19 23 3 DIMENSIONS Wied Bc cl PELAN UN Bae A ald aaa eb ated aoa PE ada 19 DBA Wedhi bana Gerth Be NN BAIR Bese BN OT hte Be at che sig ate dea BNN 19 2 3 5 Circuit Isolator Features aa Ka KE eee KK a Be nee nes 19 2 3 6 Battery Temperature Board Optional
42. ch of them takes inputs from the AC and DC sources When one of the sources or even if one of the control power boards fails the UPS system can still operate normally This feature further enhances the reli ability of the system Socket Outlet One single phase Shuko type universal outlet of 3A current handling capability provides nominal UPS output voltage of up to 3A current capacity for the ease of testing commissioning amp servicing of the UPS Multi Module UPS 1 N Multi module UPS are formed by several single unit UPS modules to constitute 1 N system where groups of one or more up to six single units operate together for the purpose of providing additional power or reliability or both The load is equally shared between any paralleled UPS Figure 25 1 N multi module UPS with external maintenance bypass switch Supplied by Others Input Mains Supply Qin UPS1 Qin UPS2 Qin UPS3 Qin Ext AA A ee E eee at O Nees apes anes ace E eee eee ad ees eee E A Byp L1 L2 L3 N Input Mains Supply Bypass Mains Supply L1 L2 L3 N L1 L2 L3 N L1 L2 L3 N Input Mains Supply Bypass Mains Supply L1 L2 L3 N L1 L2 L3 N RECTIFIER RECTIFIER RECTIFIER STATIC STATIC SWITCH STATIC UPS1 UPS2 L1 L2 L3 N OUTPUT L1 L2 L3 N OUTPUT L1 L2 L3 N pc y Qout UPS2 Qout UPS3 Qout all UPS Distribution Cabinet Qout Byp Further single unit or 1 N groups may
43. critical load when the UPS becomes unavailable e g during a maintenance procedure This manual bypass switch is fitted in all UPS modules and rated for full load of one module ECO Mode Single UPS Only IF ECO mode is selected the double conversion UPS operation is inhibited at most times for the pur pose of saving energy In this mode of operation not unlike UPS of line interactive or stand by tech nology the bypass is the preferred source and only when the voltage and or frequency of the bypass supply are beyond pre defined and adjustable limits the critical AC load is transferred to the inverter This transfer takes place with an interruption of less than 3 4 of an electrical cycle e g less than 15ms 50Hz or less than 12 5ms 60Hz Parallel Redundancy Mode System Expansion For higher capacity or higher reliability or both the outputs of up to six UPS modules can pro grammed for directly paralleling while a built in parallel controller in each UPS ensures automatic load sharing Hot Standby Mode This is an alternative 1 1 redundancy application that ensures higher availability or better usage control or both Two UPS are connected in Hot Stand By mode as follows UPS 1connects to the criti cal load and UPS 2 connects to the bypass of UPS 1 The remaining AC inputs are connected to the incoming AC mains supply UPS 1 synchronises to the output of the UPS 2 ensuring uninterrupted load transfer from UPS 1 to UPS 2 or vice ver
44. d optional output bypass distribution panel eens 25 Dry contacts multiple UPS modules with distribution panel c eee 26 Connection of 1 N system parallel control cables 0 0 0 0 0 0 ccc eee een 27 Hot standby configuration saa a bk a Aan BER Ed Fate a KA a De HA Ba an ee aa Di 28 Typical dual bus system configuration with static transfer switch and Load Bus Synch 29 Connections of a typical dual bus system utilising Load Bus Synch 0000 a ee 30 Electrical connections a ete BEE a Bee he eee a AS Gen He Goa a Sea an Sel Be 31 General arrangement 10 20kVA UPS module teen eens 32 10 20kVA NX front view with doors open ii 33 Location of parallel logic board MB cc eee teen eens 34 Internal battery layout and connecting ii 34 Internal battery layout 0 na 35 Single unit block diagram with split bypass mput 0 cee eens 36 Multiple battery temperature SeENSOYS 1 1 eee eens 37 1 N multi module UPS with external maintenance bypass switch 38 Example of configuration for single UPS with external maintenance bypass cabinet 46 UPS control and display padel 49 Graphic LCD monitor windows and keypad Lo 51 Meri tree ii secs RAS ban ben Se ah aoa A BB Da Ba SN ban Ba Mena mn geen ite oa aa a ag AAK Kaba cde aes 52 Help Seret et ee nana aa ON 59 Detault screen cara sass blac MBA a a aka SA Ba eae AGE an SBB
45. disturbances in AC input power in this mode The UPS is shut down but the load is connected to utility power via the 2 eee MAINT Maintenance Bypass Supply line NOTE The load is not protected yP against disturbances in AC input power in this mode NOTE 1 The user controls and indicators mentioned in these procedures are identified in 7 0 Operator Control Panel and Display 2 The audible alarm may sound at various points during these procedures It can be canceled at any time by pressing the SILENCE ON OFF push button NOTE 4 This unit refers to some modes and conditions that are set or adjusted using proprietary service software To take advantage of all the available features for the NX the unit must be commissioned by a Liebert factory trained service engineer Power Switches The UPS unit power switches are CB1 and SW1 CB1 Input Isolator Connects the utility supply to the UPS input SWI Rotary switch Has four positions NORMAL BYPASS TEST and MAINT that corre spond to different positions of the SW1 A B C D The positions of the rotary switch SW1 are SW1 A Output Isolator Connects the output of the UPS to the load SW1 B Neutral Isolator Connects neutral to the UPS SW1 C Bypass Isolator Connects the UPS with the bypass supply SW1 D Maintenance Bypass Isolator Permits supply of the load directly by the bypass line for maintenance of the UPS unit The funct
46. e 10 sec Bypass Frequency Tolerance 2 5 5 10 or 20 default 10 Synchronisation Window Hz Rated frequency 1 Hz selectable 0 5 to 3Hz 1 Hz sec Branch regi rate Hz Sec selectable 0 1 to 3Hz s single UPS y quency 0 1 to 1 0Hz sec paralleled UPS Inverter Voltage Tolerance VAC 5 1 Factory set to 400V 380 or 415V selectable by commissioning engineer 2 Factory set to 50Hz 60 Hz selectable by commissioning engineer Bypass condition ignored when UPS set as frequency converter 70 Io Liebert Liebert NX The Company Behind the Products With over a million installations around the globe Liebert is the world leader in computer protection systems Since its founding in 1965 Liebert has developed a complete range of support and protection systems for sensitive electronics lt Environmental systems close control air conditioning from 1 to 60 tons Power conditioning and UPS with power ranges from 300 VA to more than 1000 kVA Integrated systems that provide both environmental and power protection in a single flexible package Monitoring and control from systems of any size or location on site or remote lt Service and support through more than 100 service centers around the world and a 24 7 Customer Response Center While every precaution has been taken to ensure the accuracy and completeness of this literature Liebert Corporation assumes no responsibility and disclaims all l
47. e 23 UPS messages Message Description Suggested Action if any This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage is beyond the normal range The amplitude threshold is fixed for positive and negative 10 rating This alarm automatically resets once the bypass voltage goes normal 1 First verify that the bypass voltage and frequency displayed on the panel is within the selected range Note here the rated voltage and frequency are specified by Output voltage level and Output frequency level respectively 2 If the displayed voltage is believed to be abnormal then verify the bypass voltage and frequency presented to the UPS Check the external supply if it is found to be faulty Bypass Unable to Trace This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage exceeds the limit This alarm automatically resets once the bypass voltage goes normal First check if there are some relevant alarms such as Bypass disconnect open Bypass phase reverse and Mains neutral lost If they appear solve them first 1 Then verify that the bypass voltage and frequency displayed on the panel is within Bypass Abnormal the bypass limit Note here the rated voltage and frequency are specified by Output voltage level and Output frequency level respectively 2 If the displayed voltage is believed to be abnormal
48. e 28 Graphic LCD monitor windows and keypad Cl F1 F2 O a 1 UPS System Window 2 UPS Menu Window Output 3 UPS Data Window 4 Current Record Window 5 Keypad Window HELP oo 51 Operator Control Panel and Display The function of keys F1 to F4 is shown by a self explanatory icon as appropriate for the particular window As shown in Figure 28 above pressing F1 moves the cursor resting in OUTPUT from the UPS Menu Window 2 to current reco rd window 4 where it would first rest in Input breaker closed In a similar manner pressing F2 would move the cursor from the Output data window to the Bypass data window The summary menu tree is shown below Refer to 7 2 All Status and Event Messages Displayed on the UPS Front Panel for a detailed description of each menu item Figure 29 Menu tree Mains input TX Input Bypass Output TX Output L N voltage V L N current A Frequency Hz L L voltage V Power factor L N voltage V L L voltage V L N voltage V Frequency Hz L L voltage V L N voltage V L N current A Frequency Hz L L voltage V Power factor L N voltage V L L voltage V Date amp time Commi baud rate Comm2 baud rate Comm3 baud rate Communication mod Callback times Phone No 1 Phone No 2 Phone No 3 Command password
49. e g Fuse or Hardware failure beep 50 Operator Control Panel and Display 7 1 3 Direct Access Push Buttons Keys Emergency Power Off EPO Disconnects Power to the Load Disables rectifier inverter static bypass and battery operation Inverter ON Enables Inverter Operation Inverter OFF Disables Inverter Operation Fault clear Resets blocked UPS functions subject to any fault being cleared Silence ON OFF Toggle type buzzer mute Any new fault re enables the buzzer Press and hold Direct Access key briefly until acknowledged by a single beep LCD Monitor and Menu keys The user friendly and menu driven 320 x 240 dot graphic LCD monitor displays real time data and at the same time stores 512 historical records that can retrieve for reference and diagnosis The user can perform commands or easily browse through the input output load and battery param eters For quick reference the UPS status and any warnings are always highlighted without the need of navigating through the menu The versions of converter firmware inverter firmware and internal monitor firmware can also be displayed on the LCD Menu keys F1 to F4 are used to navigate within the graphic LCD monitor windows Table 20 Menu key Icons and their meaning Key F1 F2 F3 F4 Help Window Type 1 Li LEFT RIGHT Next Data Window ENTER HELP Window Type 2 ESC Escape UP DOWN Figur
50. e personnel and lifting aids are available when removing the shipping pallet Ensure that the UPS weight is within the designated surface weight loading of any handling equip ment See Table 33 UPS and optional cabinets battery cabinets top cable entry cabinets etc can be handled by means of a forklift or similar equipment The UPS cabinet also can be moved short distances by its casters NOTE Care must be taken when maneuvering units fitted with batteries Keep such moves to a minimum Single Module UPS Installation 1 4 4 1 4 5 1 4 6 1 4 7 1 4 8 1 5 1 5 1 Clearances The Liebert NX has no ventilation grilles at either side of the UPS To enable routine tightening of power terminations within the UPS in addition to meeting any local regulations Liebert recom mends providing adequate clearance in the front of the equipment for unimpeded passage of person nel with the doors fully opened It is important to leave of 150mm 5 9 clearance behind the UPS to permit adequate circulation of air coming out of the unit Access The component layout of the UPS supports front and top access while servicing diagnosing and repairing the UPS thus reducing the space requirement for side and rear access Final Positioning The UPS cabinets are fitted with casters on the base to allow ease of movement and positioning A WARNING Casters are strong enough for movement across even surfaces only Caster fail
51. e right side of the operator control panel for longer than 2 seconds The Inverter indicator will turn off and the status indicator 6 will turn amber and an audible alarm will sound The load will transfer to static bypass and the inverter will shut off NOTE Pressing the Alarm Silence Switch cancels the audible alarm but leaves the warning message displayed until the appropriate condition is rectified 2 Open the UPS door to gain access to the main power switches SWI and CB1 3 Turn the rotary switch to BYPASS position The UPS Bypass Static Switch still supply power to load 4 Turn the rotary switch to TEST The load is now on maintenance bypass 5 Turn the rotary switch to MAINT 6 Open rectifier switch CB1 All operator indicators and messages will turn off as the utility driven internal power supplies decay The unit will power down but the load will continue to be supplied by the manual maintenance bypass WARNING Wait 5 minutes for the internal DC busbar capacitors to discharge before attempting to remove the internal protective barriers A WARNING Even with the UPS rotary switch in maintenance bypass position portions of the unit are still energized Service is to be performed by qualified personnel only A CAUTION The load equipment is not protected from normal supply aberrations when operating in the maintenance bypass mode Powering Down the UPS To power down the UPS completely follow the procedure
52. en 25 and 50 meters 82 164 ft respectively Table 8 Input dry contact relays X3 Terminal Name Event Description 1 ENV normal closed to 12V Environment detection IN DRY 2 BtG normal closed to 12V Battery ground fault detection invokes alarm 3 GEN normal open to 12V On Generator detection 4 12V 12V power X5 Auxiliary DC Power Output Auxiliary DC power for modem or external SNMP card The voltage is between 9V to 12V The maxi mum current is 500mA X6 Analog Input Interface Two analog signal channels with an input range is from 0 to 12V The precision of detection is 3 X6 pin 1 Not used X6 pin 2 12V e X6 pin 3 ENV T environment temperature detection X6 pin 4 GND 14 Single Module UPS Installation X7 External Battery Temperature Detector Interface Interface for TMP12Z temperature detector normally connected to an external battery cabinet see Figure 6 Pin reference X7 pin 1 Not used lt X7 pin 2 12V Power supply for Temperature Monitoring Probe X7 pin 3 BAT T Battery Temperature signal X7 pin 4 GND Serial Ports RS232 1 and RS232 2 RS232 1 provides serial data and is intended for direct use with Liebert MultiLink monitoring and server shutdown software RS232 2 provides serial data and is intended for use by authorized commissioning and service person nel These serial ports are shared with the optional Web brows
53. equired for Battery or UPS test default 12345 Dynamic Energy Flow Chart and UPS Help Screen This screen displays a mimic diagram of the UPS that includes energy flow and status of isolation and transfer switches Press the Help key to activate this screen Press again to toggle between this screen and the main screen Figure 30 Help screen F1 F2 F3 O a F4 HELP 59 Operator Control Panel and Display 7 5 Default Screen Saver This default screen is displayed following at least 2 minutes of operation with no new alarm After another delay the backlight turns off Press any key to reactivate the screen Figure 31 Default screen Liebert Nxe 2005 05 22 12 30 36 20 kVA 3x3 UNIT 1 NORMAL EMERSON Liebert Press any key back to main menu F1 F2 F3 F4 HELP Sd a 60 Options For Assembly Inside the UPS Cabinet 8 0 OPTIONS FOR ASSEMBLY INSIDE THE UPS CABINET Several items of optional equipment are available for connection to the Liebert NX UPS These are described in this section of the manual and should be fitted prior to installation 8 1 Protection 8 1 1 Battery Ground Fault Detection In addition to any residual current device mounted externally and upstream the UPS or when optional isolation transformers are fitted to the UPS an optional residual battery current device can be fitted to detect leakage current from the battery int
54. er SNMP ModBus and relay cards Refer to Table 29 regarding compatibility of simultaneous use Intellislot Web Browser SNMP ModBus and Relay Cards Interface There are three interface slots available for optional Web browser SNMP ModBus and Relay cards as illustrated in 8 0 Options For Assembly Inside the UPS Cabinet 15 Single Module UPS Installation 1 8 6 External Bypass Switch Interlock EXT Maint X3 1 amp 2 on UPS Parallel Board M3 leave open if no external bypass switch is used Provides external maintenance bypass interlock protection for the UPS Short circuit means external bypass closed EXT Out X3 3 amp 4 on UPS Parallel Board leave shorted if no external output switch is used Pro vides external output interlock protection for paralleled UPS modules Short circuit means external output switch closed NOTE UPS Parallel Board M3 is located behind protective covers accessible after opening the UPS front door removal of this barrier requires the use of a tool and is restricted to service personnel 1 8 7 Battery Start Facility 1 Rotate the switch to Normal Mode 2 Verify that the batteries are connected 3 Press Battery Start Button The LCD begins to show startup screens The rectifier indicator flashes green while the rectifier is starting up It stops flashing and becomes solid green about 30 seconds after the rectifier enters the normal operation state 4 After UPS has initialized press I
55. er Shutdown for Emergency Stop EPO Action or Other Conditions 47 Language Selection 47 Changing the Current Date and Time ve daa mna KON ds 48 Command Passwords retea Ki A A oA oe ce AA oe at ee vues 48 OPERATOR CONTROL PANEL AND DISPLAY 000 eee eee eee eee eee eee 49 Introduction 5 ska nah x a bee sa aa rata aaa bade a Baad wa die a 49 TRL Mimic Power Flow osien an oe sib a SR NAN an aa SW ies 50 7 1 2 Audible Alarm Buzz 50 71 3 Direct Access Push Buttons Keys ii 51 7 1 4 LCD Monitor and Menu keys 51 7 1 5 Detailed Description of Menu Items 53 All Status and Event Messages Displayed on the UPS Front Panel 55 Prompt Pop Up Windows 59 Dynamic Energy Flow Chart and UPS Help Screen 59 Default Screen Saver io o buar a eek aes we Oe O PRE a eae eee A ag a 60 OPTIONS FOR ASSEMBLY INSIDE THE UPS CABINET cc oococoo 61 Protection Paw Ka an A E BE TEE area as bts ee ee eS 61 8 1 1 Battery Ground Fault Detection nanana naasa aanerer 61 8 1 2 Redundant Fan for Power Module ccc ete tenet ea 62 8 1 3 OC Web Card SNMP HTTP Network Interface Card 63 SkA Relay Card sa A a Se A asa ee Nth hath Tales E teat eek ah 64 8 19 Multiport 4 Card os marar A sae Bia a ana he fe Bale ahs OR EA oO ee a Rais Iu 64 OC485 Web Card Modbus Jbus IGM Net ce eee ene 66 8 2 1 Remote Alarm Monitors
56. er indicator Green Battery indicator Off Bypass indicator Off Inverter indicator Green Output indicator Green Status indicator Green 6 2 2 Verify Switching Between Operation Modes Switch from normal mode to battery mode Open CB1 to enter battery mode This breaks the utility connection to the NX To return to normal mode wait a few seconds and close CB1 The rectifier will restart automati cally after 10 seconds and resume feeding power to the inverter Switch from Normal Mode to Bypass Mode Press INVERTER OFF button to switch to bypass mode NOTE In bypass mode the load is being powered by the utility and is not receiving conditioned power through the inverter Switch from Bypass Mode to Normal Mode Turn the rotary switch to NORMAL In bypass mode press the INVERTER ON button When the inverter is ready the UPS will switch to normal mode 44 Operating Procedures 6 3 6 4 Switching the UPS from Normal to Maintenance Bypass Follow the procedure below to transfer the load from the inverter output to the Maintenance Bypass line of the UPS A CAUTION Before performing this operation read the messages on the LCD to be sure that bypass supply is regular and the inverter is synchronous with it If those conditions are not present there is a risk of a short interruption in powering the load This procedure assumes that UPS is operating normally 1 Press the INVERTER OFF button on th
57. etails see 9 0 Technical Specifications Continued compliance reguires installation in accordance with these instructions and the use of man ufacturer approved accessories only A WARNING High Leakage Current EARTH CONNECTION IS ESSENTIAL BEFORE CONNECTING THE INPUT SUPPLY Earth leakage current exceeds 3 5 mA and is less than 860 mA Transient and steady state earth leakage currents which may occur when starting the equipment should be taken into account when selecting instantaneous RCCB or RCD devices Residual Current Circuit Breakers RCCBs must be selected sensitive to DC unidirectional pulses class A and insensitive to transient current pulses Note also that the earth leakage currents of the load will be carried by this RCCB or RCD This equipment must be earthed in accordance with the local electrical code of practice A WARNING Back Feed Protection Notice This UPS is fitted with a voltage free contact closure signal for use with an external automatic disconnect device supplied by others to protect against back feeding voltage into the bypass input If this signal is not used by the installer a label must be added at the external bypass input disconnect device to warn service personnel that the circuit is connected to a UPS The text to use is the following or equivalent ISOLATE THE UNINTERRUPTIBLE POWER SYSTEM BEFORE WORKING ON THIS CIRCUIT User Serviceable Parts All equipment maintenance and serv
58. h obtains power from the battery sup plies the critical AC load There is no interruption in power to the critical load upon failure or restora tion of the AC mains input power after which the Normal Mode operation will continue without the necessity of user intervention Auto Restart Mode The battery may become exhausted following an extended AC mains failure The inverter shuts down when the battery reaches the End Of Discharge voltage EOD The UPS may be programmed to Auto Recovery after EOD after a delay time This mode and any delay time are programmed by the commissioning engineer 39 Operation 5 3 4 5 3 5 5 3 6 5 3 7 5 3 8 5 3 9 Bypass Mode If the inverter overload capacity is exceeded or if the inverter becomes unavailable for any reason the static transfer switch will perform a transfer of the load from the inverter to the bypass source with no interruption in power to the critical AC load Should the inverter be asynchronous with the bypass the static switch will perform a transfer of the load from the inverter to the bypass with inter ruption in power to critical AC load This is to avoid paralleling of unsynchronised AC sources This interruption is programmable but typically set to be less than 3 4 of an electrical cycle e g less than 15ms 50Hz or less than 12 5ms 60Hz Maintenance Mode Manual Bypass A manual bypass switch is available to ensure continuity of supply to the
59. hat the alarm is true by checking the system load percent indicated on the LCD panel to determine which phase is being overloaded 2 If the alarm is true measure the actual output current to verify that the indications are valid Disconnect unnecessary load and ensure the safety In a parallel system a severe load sharing error can also leads to the alarm Unit Over load Timeout The UPS is confirmed to overload and the overload times out Note 1 the highest loaded phase will indicate overload timing out first Note 2 When the timer is active then alarm unit overload should also be active as the load is above nominal Note 3 When the timer has expired the inverter Static Switch is opened and the load transferred to bypass The inverter shutdown and will restart after 10 seconds Note 4 If the load decreases lower than 95 after 5 minutes the system will transfer back to inverter mode Confirm that the alarm is genuine by checking the load percent indicated on the LCD If an overload is indicated then check the load and investigate any additional load connected prior to the alarm if applicable Byp Abnormal Shutdown Both bypass and inverter voltages unavailable Load interruption Inverter Over Current Inverter Pulse Width Modulation module overloaded Bypass Phase Reversed The phase sequence direction of bypass voltage is reversed Normally the phase of phase B lags 120 degrees behind phase A and t
60. he phase of phase C lags 120 degrees behind phase B Verify that the phase rotation of the bypass supply presented to the UPS is correct and rectify it if it is found to be in error Load Impact Transfer A transfer to bypass occurred due to a large step load The UPS should recover automatically Turn on connected equipment in sequential order to reduce the step loading of the inverter Transfer Time out The load is on bypass power due to excessive number of transfers that occurred within the last hour The UPS will recover automatically and will transfer the load back to inverter power within an hour Load Sharing Fault UPS modules within a parallel system are not sharing the load current equally DC Bus Abnormal DC input voltage to inverter beyond limits Inverter shuts down Load transfers to bypass System Transfer The whole paralleled UPS system transferred to bypass at the same time This message will appear on the UPS which passive transfer to bypass Parallel Board Fault Malfunction of the paralleling control circuits of this UPS module Can cause System Transfer to bypass DC Bus Over Voltage Rectifier inverter and battery converter were shutdown because DC bus voltage is too high Check whether there is a fault in rectifier side If no then check whether overload occurs Restart the inverter after resetting the fault Parallel Connect Fault The parallel cables are not connec
61. iability for damages resulting from use of this information or for any errors or omissions 2005 Liebert Corporation All rights reserved throughout the world Specifications subject to change without notice Liebert and the Liebert logo are registered trademarks of Liebert Corporation All names referred to are trademarks or registered trademarks of their respective owners SL 25410 9 05 Rev 1 POWER AVAILABILITY USER MANUAL Technical Support Service Web Site www liebert com Monitoring 800 222 5877 monitoring liebert com Outside the US 614 841 6755 Single Phase UPS 800 222 5877 upstech liebert com Outside the US 614 841 6755 Three Phase UPS 800 543 2378 powertech liebert com Environmental Systems 800 543 2778 Outside the United States 614 888 0246 Locations United States 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 Italy Via Leonardo Da Vinci 8 Zona Industriale Tognana 35028 Piove Di Sacco PD 39 049 9719 111 Fax 39 049 5841 257 Asia 7 F Dah Sing Financial Centre 108 Gloucester Road Wanchai Hong Kong 852 25722201 Fax 852 28029250 EMERSON
62. ich make the inverter frequency track that of the static bypass supply provided that the bypass remains within an acceptable frequency window A manually controlled maintenance bypass supply is incorporated into the UPS design It enables the critical load to be powered from the utility bypass supply while the UPS is shut down for routine maintenance NOTE When the UPS is operating in bypass mode or on maintenance bypass the connected equipment is not protected from power failures or surges and sags 5 1 3 Battery Temperature Compensation For 10 20kVA UPS with internal batteries a standard temperature probe is installed to measure the internal battery temperature to optimize battery management The measured temperature can be displayed from the UPS front panel For UPS with external batteries an optional battery temperature interface equally optimises the external battery management by connecting up to four external temperature sensors from the battery cabinet s to a control unit inside the UPS Figure 24 Multiple battery temperature sensors Temperature Sensor Sensor eocccceccoccocccce e Temperature BCB Control Board C2 e Temperature a oooooosenosooooooe BCB Box 37 Operation 5 1 4 5 1 5 5 2 Redundant Control Power Supply Board The UPS is equipped with two identical and fully redundant control power supply boards Ea
63. icing procedures involving internal access requires the use of a tool and should be carried out only by trained personnel There are no user serviceable parts behind covers requiring a tool for removal This UPS is fully compliant with safety regulations for equipment located in an operator accessible area Hazardous voltage is present within the UPS and battery enclosure but out of reach of non ser vice personnel Contact with hazardous voltage is minimized by housing live parts behind safety pan els that require a tool for their removal No risk exists to any personnel when operating the equipment in the normal manner following the recommended operating procedures Battery Voltage Exceeds 400VDC All physical battery maintenance and servicing requires the use of a tool or a key and should be car ried out only by trained personnel WARNING Special care should be taken when working with the batteries associated with this equipment When connected together the battery terminal voltage will exceed 400VDC and is potentially lethal Battery manufacturers supply details of the necessary precautions to be observed when working on or in the vicinity of a large bank of battery cells These precautions should be followed implicitly at all times Attention should be paid to the recommendations concerning local environmental conditions and the provision of protective clothing first aid and fire fighting facilities Single Module UPS Instal
64. ions of the rotary switch are shown in Table 11 Table 11 Rotary switch configurations e a a OUTPUT SW1 A BYPASS SW1 C Sa Di NEUTRAL SW1 B NORMAL V V v BYPASS v 7 gt TEST 2 F z MAINT V 42 Operating Procedures 6 2 6 2 1 UPS Startup The NX must be fully installed and commissioned before startup and external power isolators must be closed Once those general conditions are met the UPS may be started Start Up Procedure To start the UPS from a fully powered down condition 1 Open the UPS door to gain access to the main power switches WARNING During this procedure the output terminals will become live If any load equipment is connected to the UPS output terminals please check with the load user and ascertain whether it is safe to apply power to the load If the load is not ready to receive power then ensure that it is safely isolated from the UPS output terminals A CAUTION Do not operate the rotary switch too fast Always wait at least three seconds when rotating the switch from one position to another 2 Close CBI 3 Turn the rotary switch to TEST The bypass contactor M2 closes automatically and the LCD begins to show start up screens The rectifier indicator flashes green while the rectifier is starting up It stops flashing and becomes solid green about 30 seconds after the rectifier enters the normal operation state After initializa tion the bypass s
65. ith full load The time is user configured from 3 to 60 minutes Shut down the load in time Battery End of Discharge Inverter turned off due to low battery voltage Check the utility failure and try to recover it Mains Volt Abnormal Mains Voltage exceeds the upper or lower limit and results in rectifier shutdown Check the input line to neutral voltage amplitude of rectifier Mains Undervoltage Mains Voltage is undervoltage with derated load Check the input line to line voltage amplitude of rectifier Mains Freq Abnormal Mains frequency is out of limit range and results in rectifier shutdown Check the rectifier s input voltage frequency Rectifier Fault Rectifier detected faulty Rectifier shuts down Battery discharges Rectifier Overtemp The temperature of heat sink is too high to keep the rectifier running The UPS can recover automatically Check the environment and ventilation Batt Contactor Fail Battery contactor or circuit breaker not responding to control signals Batt Charger Fault The voltage of the battery charger is too high Control Power 1 Fail UPS operates but Redundant Control Power is not available Mains Phase Reversed AC Input phase sequence is reversed Rectifier Overcurrent Rectifier is overloaded Soft Start Fail Rectifier could not start due to low DC bus voltage 55 Operator Control Panel and Display Tabl
66. lation 1 0 SINGLE MODULE UPS INSTALLATION 1 1 1 2 Introduction This following section describes the requirements that must be taken into account when planning the positioning and cabling of the Liebert NX uninterruptible power supply and related equipment This chapter is a guide as to general procedures and practices that should be observed by the install ing engineer The particular conditions of each site will determine the applicability of such proce dures 4 WARNING Professional Installation Required Do not apply electrical power to the UPS equipment before being authorised to do so by the commissioning engineer The UPS equipment shall be installed by a qualified electrical tradesperson in accordance with the information contained in this manual All equipment not referred to this manual is shipped with details of its own mechanical and electrical installation NOTE Three phase 4 wire input supply required The standard Liebert NX UPS is suitable for connection to 3 phase 4 wire Earth TN TT and IT AC power distribution systems 1EC60364 3 Optional 3 wire to 4 wire conversion transformers are available If it is used in IT AC power distribution systems a 4 pole circuit breaker must be used on the input and refer to the relative IT Systems standard WARNING Battery Hazards Special care should be taken when working with the batteries associated with this equipment When connected together the
67. load ii 69 Batteries Ban Be wh so Pisin as Be eee Gun Bon dn beb han an a dod 69 Bypass mains Inputs om end td athe Kal aga rang saa a Ges Welle dete dae SBN 70 Figurei Model number nomenclature NXe 0 AO 010 U Input amp ie Feature Set for Region Output gt 50 60Hz AO EMEA Voltage Voltage Code 220 380 F BO Aust NZ 230 400 U CO Japan 240 415 G kVA D0 China Sapuh EO Latin Amer 010 Revision to Base Unit 020 030 future NX Product Line UPS Single Module Liebert NXe UPS module ratings 10 15 20kVA with internal battery Example NXE0A0010U 10kVA module for Europe and Middle East 400V 230V output Options Model Identification Note Battery cabinet NXEONBCS Battery Ground Fault detection kit NXAOUFXBGF Battery temperature probe for external battery NXAOUFXBTS Maintenance bypass cabinet separate bypass input NXEONMBX Specify total system kVA Fan Redundancy kit NXEOUFXRF f a A Specify UPS kVA rating Seismic Anchor kit NXAOUFXSAN Dual bus control cable 05 10 15 metres NXAOUFXD Specify lengih in metres Parallel control cable kit 05 10 15 metres NXAOUFXP Relay Card On Bat Bat Low On Byp Sum UPS Fail MultiPort4 4 sets On Bat bat Low Web browser TCPIP SNMP Card Jbus Modbus Card RELAYCARD INT MULTIPORT 4 These are Intellislot plug in cards OCWEB LB 3 slots available 0C485CARD
68. mm 16 20AWG stranded for maximum runs between 25 and 50 meters 82 164ft respectively 1 8 4 Output Dry Contacts There are three output dry contact relays at the X1 slot see Figure 4 and Table 6 Figure 4 on dry contacts and EPO MN Table 6 Output dry contact relays Position Name Description 413 2 Gen_O Generator Start Relay N O 413 3 Gen_S Generator Start Relay Center 413 4 Gen_C Generator Start Relay N C J21 2 BPS O Bypass Feedback Alarm Relay N O J21 3 BPS S Bypass Feedback Alarm Relay Center J21 4 BPS C Bypass Feedback Alarm Relay N C J25 2 ACF O Main Input Fault Relay N O J25 3 ACF S Main Input Fault Relay Center J25 4 ACF_C Main Input Fault Relay N C NOTE All auxiliary cables must be double insulated Wire should be 16 20AWG stranded 13 Single Module UPS Installation 1 8 5 Emergency Power Off Input The UPS has an Emergency Power Off EPO function that operates by a button on the control panel or by a remote contact provided by the user The EPO button is under a hinged clear plastic shield The X2 slot shown in Figure 4 is the remote EPO input interface The EPO has an NO NC contact point that becomes active when shorting terminals X2 3 and 4 or open terminal connection X2 2 and 1 If an external emergency stop facility is required it is connected terminals X2 1 amp 2 or X2 3 amp 4 of the auxiliary terminal block X2 It also is
69. nce Mode Manual Bypass 40 5 3 6 ECO Mode Single UPS Only ii 40 5 3 7 Parallel Redundancy Mode System Expansion oooooooo omo 40 51318 Hot Standby Mode ee id lada Sele haat Bea ta heh 40 5 3 9 Frequency Converter Mode ii 40 Battery Management Set During Commissioning 0 0000 cee eee ee eee 41 5 4 Normal Functions i A Goss a ee iB Gres oe eo Bie ec Nu Meld ba lee es 41 if 5 5 6 0 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 7 0 7 1 7 2 7 3 7 4 7 5 8 0 8 1 8 2 9 0 9 1 5 42 Advanced Functions Software Settings Performed by the Commissioning Engineer 41 Battery Protection settings by commissioning engineer e 41 OPERATING PROCEDURES i2u nd vet ee on cies oust wee a a E ja ewe tw Geert oe 42 Introduction nn OA Soe nol okt renal aha ate Oe MeN Ns A ar ars na 42 o a Power Switches ici E eave he eine Sle idk ee Minh lee Gow he lenis 42 UPS Startups td IG aaa oe ee pee oth whee aa 43 621 Start Up Procedures 0x meat Grew pi ceiver dotted hs eee als a a Be eee Wa ache a ee 43 6 2 2 Verify Switching Between Operation Modes 0 0 cece teen eens 44 Switching the UPS from Normal to Maintenance BypasS oo oo o 45 Powering Down the UPS ici Sethe Matec A A EN NN eS 45 Powering Down the UPS and Maintaining Power to Load 0 0 0 0 46 Emergency Shutdown With EPO io 47 EE 47 Reset Aft
70. ntrol Panel and Display 7 3 7 4 Prompt Pop Up Windows The prompt window is displayed during the operation of the system to alert the user to certain condi tions and or to require user confirmation of a command Table 24 Prompt windows meanings Prompt Transfer with interrupt please confirm or cancel Meaning Inverter and Bypass supplies are not synchronised and any load transfer between the supplies will cause a brief load interruption The load is too high to be transferred with interrupt The total load must be less than the capacity of one unit to allow a parallel system to perform an interrupted transfer from bypass to inverter This Operation Leads to Output Shutdown Confirm or Cancel No alternative supply is available and any Inverter Off operation will cause the load to be de energised This operation leads to inverter overload confirm or cancel The turn off this inverter will lead to the overload of remaining inverter s in a parallel system Turn on more UPS to carry current load The number of paralleled inverters already turned on is insufficient to carry the existing load Battery will be depleted confirm Battery Capacity test discharges the battery 100 System self test finished everything is ok No action required System self test finished Please check the current warnings Check Current Records window Enter control password R
71. nverter On Figure 5 Battery start for UPS Battery Start Button 2 a Kap PP ah il ngan unani 16 Battery Installation 2 0 BATTERY INSTALLATION 2 1 Introduction The UPS battery bank consists of battery blocks connected in series to provide a D C string voltage as required by the UPS converter The AUTONOMY TIME the time during which the battery can maintain supply to the load in the event of a mains failure is limited by the ampere hour capacity of the battery blocks and in some cases this results in several strings being connected in parallel The NX usually has internal batteries but longer run time is available by using an external battery cabinet The battery cabinet will be supplied in one of the following forms 1 Complete installation comprising the battery cabinet batteries and protective device 2 Battery cabinets and protective device only batteries supplied by others NOTE 10kVA to 20kVA UPS models contain an internal battery compartment that can accommodate up to 44 blocks 12 Ah 12V batteries The battery bank may be disconnected from the UPS for maintenance or service The isolator may be switched manually ON or OFF 17 Battery Installation 2 2 Safety Special care should be taken when working with the batteries associated with the Liebert NX UPS system When all the cells are connected together the battery terminal voltage is potentially hazard ous The battery
72. o be used in conjunction additional cabinets to provide the necessary accommoda tion required by the larger cells associated with system s having a long autonomy time Where two or more cabinets are used they are positioned alongside each other and secured and bonded together If the cabinet s is located immediately adjacent to the main UPS equipment the two units are bolted together 2 3 2 Temperature Considerations Valve regulated lead acid battery cells are sensitive to ambient temperature and should be operated between 15 C and 25 C 59 77 F Battery capacity is increased by 1 for every 1 C 2 F increase in temperature up to 25 C 77 F Battery life is reduced at temperatures above 25 C 77 F When batteries are mounted in the same room as the UPS unit it is the battery that dictates the designed maximum ambient temperature not the UPS i e in the case of valve regulated cells the ambient room temperature should be kept between 15 C and 25 C 59 77 F and not between 0 C and 40 C 32 104 F which is the specified main equipment operating temperature range Tempera ture deviations are permissible for short periods provided the average temperature does not exceed 25 C 77 F 2 3 3 Dimensions The external dimensions are shown in Table 9 These are the same height and depth as the UPS module and provide a matching appearance when bolted together All cabinets are fitted with doors which must be fully
73. o the PE Protective Earth Residual current range monitored 30 3000mA Power supply voltage for the set AC230V L N When a battery ground fault is detected an alarm will appear on the UPS display panel An additional Dry contact fault Alarm signal is available for remote monitoring Table 25 Dry contact fault alarm signal is available for remote monitoring Terminal Name Definition Battery Ground Fault Detection can be 21 Common programmed as Alarm or Pre Alarm 22 NC 24 NO The Battery ground fault detection set contains one CT current transformer and one DC sensitive residual current monitor The connection of this set for UPS is illustrated as follows Figure 32 Battery ground fault detection set connections La 0 1 Current Transformer BCB or W1 A358 Contactor A suis Battery Monitor Board Ka K2 2 Socket Output Phase Al 11 IN DRY X3 Output Neutral Battery Ground Fault Detection Resys B470 AC230 The Battery Ground Fault Detection Set is assembled within the UPS cabinet 61 Options For Assembly Inside the UPS Cabinet 8 1 2 Redundant Fan for Power Module In addition to ensure sufficient cooling power at various operation modes with 100 rated load a redundant power module fan set can be supplied thus ensuring continuity of UPS operation even with the failure of some fans No ext
74. o the batteries themselves and connected using the most direct route possible Storage Should the equipment not be installed immediately it must be stored in a room for protection against excessive humidity and or heat sources see Table 31 CAUTION An unused battery must be recharged periodically per battery manufacturer recommendation Temporarily connecting the UPS to a suitable AC supply mains and activating it for the time required for recharging the batteries can achieve this Single Module UPS Installation 1 4 1 4 1 1 4 2 1 4 3 Positioning The cabinet is mounted on four castor wheels for ease of positioning and for short distance movement Jacking feet are provided to prevent the UPS from moving once it has been wheeled to its final posi tion For optimal design life the place chosen must offer Easy connection Enough space to easily work on the UPS Sufficient air exchange of enough to dispel heat produced by UPS Protection against atmospheric agents e Protection against excessive humidity and very high heat sources e Protection against dust Compliance with the current fire prevention requirements Operating environment temperature between 20 C and 25 C 68 and 77 F The batteries are at maximum efficiency in this temperature range see Table 31 The UPS cabinet is constructed around a steel chassis with removable panels The top and side panels are secured to the chassis by sc
75. opened in order to fit or remove the batteries The door swing must therefore be taken into consideration when planning the positioning of the cabinets 2 3 4 Weight The unladen weight is shown below in Table 9 When designing the battery installation the weight of the batteries and cables must be added to the unladen weight This is particularly important when placing the NX on a raised floor Table 9 Dimensions and weight Optional Maximum Cabinet Weight Circuit Breaker Discharge Current External Cabinet Without Batteries Model Amperes at EOD WxDxH mm in kg Ib 10kVA 22A Battery Cabinet 50A 15KVA 33A eee an 170 375 20kVA 44A BEN Ban 2 3 5 Circuit Isolator Features The UPS is fitted with internal Anderson connectors and fuses for connection and disconnection of batteries External battery banks are protected by battery fuses or a optional circuit breaker with status contacts and undervoltage trip coil Refer to 2 5 Battery Control for details 19 Battery Installation 2 3 6 Battery Temperature Board Optional The optional external battery temperature sensor kit contains one probe and one temperature trans port board as illustrated in Figure 6 It is connected to the UPS Monitor Board Figure 6 Single temperature sensor and monitor board U2 Name W2 L 5m Temperature E Sensor Name W1 L 30m Cable W2 is packed with the temperature sensor 2 3 7 Moving the Bat
76. ort 4 any f Relaycard int any Top Intellislot 2 Comm 1 2 Intellislot On Monitor Board OCWEB LB 2400 Not simultaneous with Multilink in RS232 2 Modbus Jbus 2400 Multiport 4 any f Relaycard int any Middle Intellislot 1 Comm 2 Intellislot On Monitor Board OCWEB LB 2400 Not simultaneous with Multilink in RS232 2 Modbus Jbus 2400 Multiport 4 any Bottom Intellislot 3 Comia Relaycard int any Intellislot On Monitor Board OCWEB LB 2400 Modbus Jbus 2400 Top Multilink Serial DB9 port RS232 1 Comm 1 9600 Bottom Multilink Serial Not simultaneous with Web DB9 port RS232 2 Comm 2 2400 card in middle intellislot Remote Alarm Monitor Status and alarm conditions are available on an optional remote alarm monitor RAM panel that is driven by volt free alarm status contacts from an optional relay alarm board 66 Technical Specifications 9 0 TECHNICAL SPECIFICATIONS 9 1 Conformity and Standards The UPS has been designed to conform to the following European and international standards Table 30 Compliance with European international standards Description General and safety requirements for UPS used in operator access areas Normative reference EN 50091 1 1 IEC 62040 1 1 AS 62040 1 1 Electromagnetic compatibility EMC requirements for UPS EN 50091 2 IEC 62040 2 AS 62040 2 Class A Method of specifying the performance and test requirements of U
77. r Output current Crest Factor 53 Operator Control Panel and Display Table 22 Descriptions of UPS menus and data window items continued Menu Type Item Type Explanation Sout kVA Sout Apparent power Pout kW Pout Active power System Qout kVAR Qout Reactive power Single unit no parallel data can configured as a single unit UPS has only native load no system Battery voltage V Battery bus voltage Battery current A Battery bus current Battery temperature C Internal battery temperature C Battery Remain Time Min Battery run time remaining Battery capacity Percentage of battery life remaining Battery boost charging Battery is boost charging Battery float charging Battery is float charging Battery disconnected Battery is not connected Records history log Displays all records in the history log Language choices for text displayed User may select any of 12 languages for LCD text Display contrast Adjust the LCD display contrast Date format set Choose the format for date display M D Y D M Y M D Y Y M D Date amp time Set the date and time Comm1 baud rate Communication baud rate setting for Intellislot 1 Comm2 baud rate Communication baud rate setting for Intellislot 2 Comm3 baud rate Communication baud rate setting for Intellislot 3 Communication address This setting is applicable to RS485 communication mode Settings Communication mode Communication Mode Setting Callback
78. r to the Records tab of the Menu and Data Window Refer to Table 23 for a complete list of supported status messages All Status and Event Messages Displayed on the UPS Front Panel This is the complete list of UPS events and status messages supported for display in either the Record window Historic data or in the Current window Prevailing data as described in 7 1 4 LCD Moni tor and Menu keys Table 23 UPS messages Message Inverter Comm Fail Description Suggested Action if any Internal RS485 communication failure between monitor and inverter Rectifier Comm Fail Internal RS485 communication failure between monitor and rectifier Parallel Comm Fail The CAN communication between different UPSs within a parallel system fails 1 Check if there are some UPSs not powered on in the parallel system If so power on these UPSs and check if the alarm disappears 2 Press Fault Clear push button Battery Overtemp The Battery temperature is over limit Check the battery temperature and ventilation Ambient Overtemp The Ambient temperature is over limit Check the ventilation of UPS room Battery Fault Battery detected faulty Reserved Battery Replaced Battery test failed Battery should be replaced Battery Low Pre warning Before the end of discharge battery undervoltage pre warning should occur After this pre warning battery should have the capacity for 3 minutes discharging w
79. ra footprint is required Figure 33 Redundant power module fan set Redundant AC Fan nggabag a nak daa aia Naba anaa abaan aa aab Ne aa aa kaka aana baia na a aane agan 3 Standard AC Fan AC Fan 1 1 AC Fan 1 2 AC Fan 1 3 AC Fan 1 4 3 Fant20 E Fant20 Fant20 3 Fant20 A A A TAn W353X1_J6 TOP VIEW Figure 34 Communication bays and cable location Location Preferred Device This Location RS 232 1 DB 9 COM Port 1 Serial MultiLink Software Port Setting 2400 Baud RS 232 2 DB 9 COM Port 2 Service Access Software DB 9 Port Setting 9600 Baud Monitor Board Location Preferred Device This Locatior Top Bay COM Port 1 Relay Card no port setting req d Mid Bay COM Port 2 Multiport4 no port setting req d Bottom Bay COM Port 3 OCWeb LB 0C485 port setting 2 Top Mid Suggested routing of customer supplied communication cables Notes a All Intellislot cards are supported in any bay b Port sharing is PERMITTED between RS232 x DB9 devices and Relay Multiport4 Intellislot cards i e Serial Multilink software will work from RS232 1 DB9 also when relay card is inserted in the top bay NOT PERMITTED between RS 232 x D B9 devices and OCWeb OC485 cards i e Serial MultiLink software will not work from RS232 1 DB 9 when OCWeb card is inserted Gland plate for cable exit in the top bay
80. rces must be referenced to the same neutral potential and input earth leakage monitoring devices if installed must be located upstream of the common neutral sinking point Refer to the instructions in 1 0 Single Module UPS Installation 29 UPS Multi Module Installation 3 4 4 Control Wires For Liebert NX to NX dual bus configuration interconnect the optional DBS cable between any DBS ports of two parallel systems as illustrated in Figure 16 Figure 16 Connections of a typical dual bus system utilising Load Bus Synch UPS UPS Parallel Board Parallel Board Parallel Board Parallel Board DBS Cable Parallel System A Parallel System Il NOTE Example shown with ring control cables 8 for DSB applied to two 1 1 paralleled systems 3 4 5 Extended Dual Bus Synchronization Option DBS Interface Box For Liebert NX to non NX whether another Liebert UPS range or not dual bus configuration one DBS interface box shall be mounted on the non Liebert NX UPS In this situation the other UPS sys tem is always treated as a master and the following conditions are covered Master and slave are both on inverter e Master on bypass slave on inverter 30 Installation Drawings 4 0 INSTALLATION DRAWINGS Figure 17 Electrical connections o x3 Ext Maint fo Parallel Board Ext Out C o X2 Ext EPO Earth To Customer s Safety Ea
81. rews Access to the power terminals auxiliary terminals blocks and power switches is from the front Oper ational status and alarm information is provided through the front door operator control panel Mod els 20kVA and below house both the power components and an internal battery Cooling air enters the front of the NX and is exhausted out the rear System Cabinets A UPS may comprise a number of cabinets depending on the design requirements e g UPS cabinet external battery cabinet external bypass cabinet In general all the Liebert cabinets used in a particu lar installation are of the same height and designed to be positioned side by side to form a matching array Refer to 4 0 Installation Drawings for assistance on positioning the cabinets described below 10 to 20kVA UPS The UPS consist of a single cabinet which uses typically forty 40 12V battery blocks fitted inter nally and connected in series to provide a nominal battery voltage The UPS may be shipped without the batteries fitted An extended battery option is available This comprises a separate cabinet containing additional bat teries that can be connected to the UPS to increase its battery run time Moving the Cabinets WARNING Ensure that any equipment used to move the UPS cabinet has sufficient lifting capacity The UPS is fitted with casters Take care to prevent the NX from moving when unbolting the unit from its shipping pallet Ensure that adequat
82. rilles at the front of the cabinet and hot air is released through the grilles at the back Do not cover the ventilation openings If necessary to avoid room temperature build up install a system of room extractor fans Optional air filters are available if the UPS is to operate in a dusty environment The UPS heat dissipation detailed in Table 32 can be used as a guide for air conditioning sizing depending on the selected mode of operation Normal Mode VFI SS 111 Double Conversion UPS lt ECO Mode VFD SS 311 Stand By UPS If in doubt use Normal Mode figures NOTE The UPS is suitable for mounting on concrete or other non combustible surface only External Battery Room Batteries should be mounted in an environment where the temperature is consistent and even over the whole battery Temperature is a major factor in determining the battery life and capacity Typical battery manufacturer performance data are quoted for an operating temperature between 20 and 25 C 68 and 77 F Operating above this range will reduce the battery life while operation below this range will reduce the battery capacity In a normal installation the battery temperature is main tained between 15 C and 25 C 59 and 77 F Keep batteries away from main heat sources or main air inlets etc Where the batteries are located externally to the main UPS cabinet a battery protection device e g fuses or circuit breakers must be mounted as close as possible t
83. rth To Critical Load Main Bypass Input Supply External Battery Power Cables 31 Installation Drawings Figure 18 General arrangement 10 20kVA UPS module 700 a 600 7 1400 a FRONT VIEW 10 20 kVA 1 3 LEFT SIDE VIEW 10mm dia threaded mounting holes Detail A rear of unit shown without side panel Leveling feet 420 1 80 on TTI ly 625 TOP VIEW 38 gam A Bee 700 Air Intake 103 321 O 1 6 o o Ol Lg 3299 430 520 BOTTOM VIEW 1 Air inlet grille 2 Air outlet grille 3 Adjustable fixing feet 4 Castors for maneuvering 5 Seismic anchors option 6 Cable entry 7 Operator control and display panel All dimensions are in mm 32 Installation Drawings Figure 19 10 20kVA NX front view with doors open 5 PAI 1 Main Bypass Input terminal T1 2 Battery Output terminal T2 3 Internal battery Input switch CB2 4 Rotary swi
84. s enter key to acknowledge that the all paralleled UPS will be disconnected from the load Fault Reset Fault clear direct access key pressed Alarm Silence Silence On Off direct access key pressed Inverter failed to turn on when Inverter On direct access key was pressed This may Turn On Fail be as a result of Invalid Operation Maintenance bypass on or DC bus or rectifier not ready Alarm Reset Fault clear or Silence On Off direct access key pressed Bypass Mode Load supplied from AC input bypass supply Normal Mode Load supplied from Inverter output through double conversion of the AC mains input supply Battery Mode Load supplied from Inverter output through double conversion of the Battery supply Source share mode Load supplied from Inverter output through shared double conversion of the AC mains input supply and of the Battery supply UPS Shutdown UPS Shutdown output power down Check UPS Output Inverter off during normal startup diagnostics information only Generator Connected Generator active signal received Source share mode may be activated pending UPS settings BCB open Battery Circuit Breaker status open BCB closed Battery Circuit Breaker status closed Battery Float Charging Battery status Float charge mode Battery Boost Charging Battery status Boost charge mode Battery Discharging Battery status discharge
85. s in 6 3 Switching the UPS from Nor mal to Maintenance Bypass To completely isolate the UPS from the AC supplies the main external power input isolator both iso lators where separate supplies are provided for rectifier and bypass should be opened see Figure 26 A WARNING To prevent injury to personnel lockout or tagout the service supplies 45 Operating Procedures 6 5 Powering Down the UPS and Maintaining Power to Load NOTE An external Maintenance Bypass Cabinet must be installed before attempting to perform the following procedure If the UPS needs to be shut down completely while maintaining power to the load follow these steps 1 Perform Steps 1 through 5 in 6 3 Switching the UPS from Normal to Maintenance Bypass 2 Close the external maintenance bypass rotary switch to Maint position A WARNING On the primary input distribution panel which is often located distant from the UPS area a label should be posted advising service personnel that the UPS circuit is under maintenance WARNING Wait 5 minutes for the internal DC busbar capacitors to discharge The UPS is now completely powered down NOTE The maintenance bypass power switch may be operated at any time while the UPS is powered down to connect the load to the maintenance bypass supply if required The procedure can be performed only after the installation has been completed which includes the maintenance bypass cabinet after the sy
86. sa This ensures that any specified load is supplied by a UPS while still providing a bypass path to cater for overloads Further the system can also be pro grammed to reverse UPS1 between Normal and Bypass Modes so that each UPS is equally utilised This interval is programmable from 1 to 4 320 hours 180 days Frequency Converter Mode The NX UPS can be programmed into frequency converter mode for either 50Hz or 60Hz stable out put frequency The input frequency may vary from 40Hz to 70Hz In this mode the static bypass oper ation is disabled and the battery becomes optional depending on any requirement to operate in battery mode stored energy mode 40 Operation 5 4 5 4 1 Battery Management Set During Commissioning Normal Function Constant charging current Current can be set up to limit charging power Constant boost voltage boost if applicable Voltage of boost charging can be set as required by the type of battery For Valve Regulated Lead Acid VRLA batteries maximum boost charge voltage should not exceed 2 4V cell Float Charge Voltage of float charging can be set as required by the type of battery For VRLA float charge voltage should be between 2 2V to 2 3V Float Charge Temperature Compensation optional A coefficient of temperature compen sation can be as required by the type of battery End of discharge protection EOD If the battery voltage is lower than the EOD the battery converter
87. selectable 5 through 30 seconds in 5 second intervals 1 Rectifier operates at any of the rated supply voltages and frequencies without further adjustment 2 At 305V input mains the UPS maintains the specified output voltage at rated load without discharging a previously charged battery 3 IEC 62040 3 EN 50091 3 at rated load and input voltage 400V battery charged 4 IEC 62040 3 EN 50091 3 at rated load and input voltage 400V battery charging at maximum rated power 68 Technical Specifications Table 35 Battery Intermediate DC Circuit Unit of Rated Power kVA Measurement 10 15 20 Battery Bus Voltage VDC Nominal 480V VRLA Float charge is 540V Range 400V 600V Number of Lead Acid Cells Nominal 240 40 x 6 cell 12V blocks Maximum 264 44 x 6 cell 12V blocks Minimum 228 88 x 6 cell 12V blocks Float Voltage V cell VRLA 2 25 V cell selectable from 2 2 2 3V cell Constant current and constant voltage IU charge mode Temperature Compensation mV C cl 3 0 selectable 0 to 5 0 around 25 C or 30 C or inhibit Ripple Voltage Yo V float lt 1 Ripple Current C49 lt 5 Boost Voltage VRLA 2 35 V cell selectable from 2 30 2 40V cell Constant current and constant voltage IU charge mode Boost Control float boost current trigger 0 050 C19 selectable 0 030 0 070 boost float current trigger 0 010 C19 selectable 0 005 0 02
88. st one of the static switches of inverter side is open or short circuit This fault is La oral locked until power off At least one of the static switches of bypass side is open or short circuit This fault is Bypass STS Fail locked until power off Operation Invalid This record is registered following an incorrect operation At least one of the inverter output fuses is blown Inverter shuts down Load transfers Output Fuse Fail to bypass Control Power 2 Fail UPS operates but Redundant Control Power is not available The UPS is confirmed to be overload when the load arises above 105 nominal rating The alarm automatically resets once the overload condition is removed 1 Confirm that the alarm is true by checking the load percent indicated on the LCD Unit Over load panel to determine which phase is being overloaded 2 If the alarm is true measure the actual output current to verify that the indications are valid Disconnect unnecessary load and ensure the safety In a parallel system a severe load sharing error can also leads to the alarm 56 Operator Control Panel and Display Table 23 UPS messages Message System Over load Description Suggested Action if any The UPS parallel system is confirmed to overload when the total load arises above 105 nominal rating for the set basic number of UPSs The alarm automatically resets once the overload condition is removed 1 Confirm t
89. stem has been placed in operation by authorized personnel See Figure 26 for more information Figure 26 Example of configuration for single UPS with external maintenance bypass cabinet 46 Operating Procedures 6 6 6 7 6 8 6 9 Emergency Shutdown With EPO This circuit has been designed to switch off the UPS in emergency conditions i e fire flood etc The system will turn off the rectifier inverter and stop powering the load immediately including the inverter and bypass and the battery stops charging or discharging If the input utility is present the UPS s controls will remain active however the output will be turned off To remove all power from the UPS the external feeder breaker should be opened Auto Restart When the main and bypass sources fail the UPS draws power from the battery system to supply the load until the batteries are depleted When the UPS reaches its end of discharge EOD threshold it will shut down The UPS will automatically restart and enable output power After utility power is restored If Auto Recovery after EOD Enabling is enabled After the Auto Recovery after EOD Delay Time expires the default delay is 10 minutes During the auto recovery delay the NX will be charging its batteries to provide a safety margin for equip ment shutdown if input power fails again If the Auto Recovery after EOD Enabling feature is disabled the user may restar
90. t Closed if no UPS failure 2 3 Not Used 4 UPS Fault Closed if UPS fails 5 Summary Alarm Closed if SUMMARY ALARM occurs 6 Summary Alarm Closed if no alarm conditions are present 7 Any Mode Shutdown return Not use External EPO terminal 8 Not Used 9 Common Low Battery 10 Low Battery Closed if battery is OK 11 Low Battery Closed if LOW BATTERY point occurs 12 13 Not Used 14 UPS Any Mode Shutdown Not support use External EPO terminal 15 On UPS Closed if ON UPS inverter power 16 On Battery Closed if ON BATTERY power Utility failure 17 Common UPS Fault Summary Alarm On UPS On Battery On Bypass 18 On Battery Closed if not ON Battery power Utility OK 19 23 Not Used 24 On Bypass Closed if ON BYPASS 25 Not Used A Summary Alarm occurs when any of the following conditions exist lt Utility power is out of the acceptable range voltage and or frequency UPS is in BYPASS MODE load not on Inverter power lt UPS Battery is LOW UPS fault has occurred Table 27 Connection Description JPO1 Pin9to Pin 17 Allows all relay COMMONS to be tied together REMOVE Interconnects all relay COMMONS and the not supported ANY MODE SHUTDOWN Return JPO2 Pin 7 to Pin 17 8 1 5 Multiport 4 Card The Multiport 4 card provides 4 sets of voltage free contact closures for remote monitoring of alarm conditions UPS operation On Battery and battery low condition A typical application is to allo
91. t the system man ually by pressing Fault Clear button Reset After Shutdown for Emergency Stop EPO Action or Other Conditions Once all appropriate measures have been taken to correct the problem indicated by the alarm mes sage appearing on the operator control panel display carry out this procedure to restore the UPS to regular operation following an EPO action or for the following reasons Inverter Overtemperature Cut off Overload Battery Overvoltage excessive switching BYP XFER COUNT BLOCK etc When the user confirms that the fault is cleared 1 Press the FAULT CLEAR button to clear all alarms 2 Follow Steps 2 6 in Section 6 3 to turn off the UPS 3 Follow steps in Section 6 2 1to turn the UPS on After the EPO button is pressed if the input utility is removed the UPS will shut down completely When input utility is returned if the rotary switch SW1 is in either Bypass or in Normal position the UPS will start up on Bypass There will be power at the output terminals of the UPS A WARNING If the rotary switch is in the Maint position and input utility is present there will be power at the output terminals of the UPS Language Selection The LCD menus and data display are available in 12 languages Chinese Dutch English French German Italian Japanese Polish Portuguese Russian Spanish and Swedish To select a different language than the one being displayed 1 From the main menu press the F1 shift
92. tatic switch closes Because output switch SW1 A is still open the UPS channels power through Maintenance Bypass Supply line SW1 D The bypass indicator extinguishes provided that the bypass is normal The UPS mimic display indicators will be Indicator State Rectifier indicator Off Battery indicator Off Bypass indicator Off Inverter indicator Off Load indicator Off Status indicator Off A WARNING Do NOT turn the rotary switch until the rectifier indicator stops flashing green 4 Turn the rotary switch to BYPASS Indicator State Rectifier indicator Green Battery indicator Off Bypass indicator Green Inverter indicator Off Load indicator Green Status indicator Amber The maintenance switch SW1 D opens and output switch SW1 A closes The UPS powers from static bypass instead of from maintenance bypass The bypass and load indicators turn on The design of the rotary switch ensures uninterrupted output 43 Operating Procedures 5 Turn the rotary switch to NORMAL then press the INVERTER ON control button for 2 seconds The inverter will start and the inverter indicator will flash green After the inverter is ready the UPS transfers from bypass to inverter the bypass indicator turns off and the inverter and load indicators turn on The UPS is operating normally The UPS mimic display indicators will Indicator State Rectifi
93. tch SW1 5 Monitor board U2 3 2 N A oB oC oN T2 LU oma Battery Input Output mA bA mB bB mC bC mN bN T1 AL an a Bypass Input Installation Drawings Figure 20 Location of parallel logic board M3 an 5 O 3 o E o 11 11 11 11 Li 11 11 Li 10 i E ui ui ui E Battery 7 an ii i Start ui 11 ui a B Interface R E om m o e o E e wg aa Parallel E Logic E F m Board o o i Si Fa El E E e ke Bl lo ollo UP Y O
94. ted Depending on the configuration follow the appropriate instal lation instructions for each system Place the UPS modules side by side and interconnect as shown below The objective of the Dual bus Synchronizer DBS is to keep the output of two independent UPS sys tems or parallel systems in synchronization One system is designated as the master the other is designated as the slave The operating modes covered comprise master and or slave operating inverter or bypass mode 28 UPS Multi Module Installa tion Figure 15 Typical dual bus system configuration with static transfer switch and Load Bus Synch Bypass supply I Bypass supply I Input Input Input Input Rectifier Rectifier Rectifier Rectifier ara wa me LH ME wv Vv y i av SK LAR SAI LARA AD A K LA E A LBS ico eee Intermodule opt control cable control cable STS KH Lo So OS e v Load 3 4 2 External Protective Devices Refer to the instructions supplied in 1 0 Single Module UPS Installation 3 4 3 Power Cables The wiring of power cables is similar to that of single module system The Bypass and the Main input sou
95. ted correctly in a parallel system Reset the fault by pressing the fault clear button then restart the inverter by pressing the inverter on button Bypass Over Current Bypass current is over limit above 135 rating The UPS just alarms and does nothing LBS Active Load Bus Synchronisation is active The UPS is acting as an LBS master or slave ina dual bus configuration Setting Save Error History records not saved Reserved Mains Neutral Lost AC Input mains reference neutral not detected Protocol version clash Firmware incompatibility between Monitor Board and Digital Signal Processor Board Battery ground fault Battery leakage to ground detected option Manual Turn On Manual Turn On via front panel Manual Turn Off Manual Turn Off via front panel 57 Operator Control Panel and Display Table 23 UPS messages Message Description Suggested Action if any EPO Emergency Power Off direct access key pressed or external command received Transfer Confirm Prompt to press enter key to acknowledge that an interrupted load transfer to bypass will happen Transfer Cancel Prompt to press ESC key to avoid that an interrupted load transfer to bypass will happen Unit Off Confirm Prompt to press enter key to acknowledge that the UPS will be disconnected from other paralleled UPS modules System Off Confirm Prompt to pres
96. ternal battery circuit breaker battery temperature sensor communicate with a personal computer or provide alarm signaling to external devices or for Remote Emergency Power Off REPO The monitor board arranged for this purpose is located on the rear of the operator access door The main features are Input and Output dry contacts signal one pair of contacts of relay Emergency Power Off control EPO Environmental parameter input interface User communication for data setting and user background monitor Intellislot interface Modem interface Temperature detect interface Figure 2 Auxiliary terminal block detail O oL eng PWR J15 Modem X5 SNMP Card Intellislot 2 2 X4 E pu Lo Intelisot 1 1 O J13 J21 J25 J28 J4 J26 J30 J10 e n eeen ooon eO beeper intelisiot 3 EPO Dry In MBC BCB BEP ONV AGF gt y The black square MH X4 X2 X3 on each slot indicates Pin 1 11 Single Module UPS Installation 1 8 Dry Contacts The UPS provides input dry contacts and output dry contacts 1 8 1 Input Dry Contacts There are several input dry contacts at the X8 slot Figure 3 Input dry contacts kal Kal ka kal kal karl Kal Se Ge Aa 33 3 33 3 3 3 38 33 33 38 12V Table 3 Input dry contacts at X3 Position Name Description J4 1 ENV Battery Room Alarm NC J4 2 BtG Battery Ground Fault Detection NC J4 3 GEN On Generator NO J4 4 12V 1
97. tery Cabinets A WARNING Ensure any lifting equipment used in moving the cabinet has sufficient lifting capacity Ensure that the weight is within the designated surface weight loading of any handling equipment See Table 9 for weight details Battery cabinets can be handled by means of a fork lift or similar equipment NOTE Care must be taken when maneuvering units fitted with batteries Keep such moves to a minimum When the equipment has been finally positioned ensure the adjustable feet are set so that the battery cabinet will remain stationary and stable Seismic anchors option is available for anchoring the unit to a concrete floor 2 3 8 Cable Entry Cables enter the battery cabinet from the bottom Cable entry is made possible by removing a blank ing piece fitted at the bottom to reveal the cable entry hole 20 Battery Installation 2 3 9 General Arrangement Drawings Refer to Figures 7 and 8 for general arrangement of battery cabinet models Figure 7 Battery cabinet bottom cable entry location z Bottom View 700 LITA 250 1 82 5 1 100 83 T F 1400 L 620 828 All dimensions are expressed in millimeters 21 Battery Installation Figure 8 Battery cabinet with fuse or optional circuit breaker locations 1 Bottom cable entry
98. times When Intellislot 1 Communication mode is Modem this parameter sets the number of times a number is redialed to send an alarm notification Phone No 1 When Intellislot 1 Communication mode is Modem this is the first phone number to be dialed to send an alarm notification Phone No 2 When Intellislot 1 Communication mode is Modem this is the second phone number to be dialed to send an alarm notification Phone No 3 When Intellislot 1 Communication mode is Modem this is the third phone number to be dialed to send an alarm notification Command password User can modify the command password Battery maintenance ost Xn tho ty aoe el mut a aos an Ea Bety capacity Ar a j System test This is a self test of the UPS When the user activates this function a tests pop up window appears about 5 seconds later to show the results Stop testing leer ee ae a battery maintenance test battery capacity test or oa UPS version a sey bee version numbers for the inverter rectifier and UPS model Provides UPS model information for example 208V 60Hz 54 Operator Control Panel and Display 7 2 Current Record Window Keeps a log the events that resulted in the current mode of operation Ignores transient conditions that have been resolved Use page F1 and up down arrow to read the events For a complete history log refe
99. tion between UPS modules as shown below The parallel control board is mounted on the top behind protective cover of each UPS module refer to Figure 20 The ring configuration ensures high reliability of the control Refer to Figure 13 13 Connection of 1 N system parallel control cables 2 D UPS 6 Parallel Board Parallel Board Parallel Board Parallel Board Parallel Board Hot Standby UPS Modules Cabinet Installation Place the UPS modules side by side and interconnect as shown below The hot standby mode comprises two series connected UPS modules of the same rating One module is designated as the hot standby master and the other module is designated as the hot standby slave Their roles are determined by power connection and configuration software In normal operation both slave and master operate in normal mode and the output from one upstream UPS feeds the bypass input to the other downstream UPS The output of the downstream UPS is connected to the critical load and is always synchronised to the output of the upstream UPS If the inverter of the UPS con nected to the load fails the inverter of the upstream UPS supplies the load through the downstream UPS bypass circuit The system can be programmed to cycle the downstream UPS between Normal mode and bypass mode so that both ups are equally exercised NOTE If it is a hot stand
100. tted with remote trip units 4 Normally Closed EPO X2 1 amp 2 these terminals are supplied factory linked on the monitor board Figure 10 Emergency power off connections lt yos x2 4 Monitor Board X2 3 et X2 4 Monitor Board EPO y X2 3 F X2 4 Monitor Board EPO 24 UPS Multi Module Installation 3 2 Paralleled UPS Modules The basic installation procedure of a parallel system comprising two or more UPS modules is the same as that of single module system The following sections only introduce the installation proce dures specific to the parallel system 3 2 1 Cabinet Installation Place the UPS modules side by side and interconnect as shown in Figure 11 The distribution panel external bypass cabinet is optional but recommended for ease of maintenance and system testing Figure 11 Typical 1 N system block diagram with common input supply with separate batteries and optional output bypass distribution panel SUPPLIED BY OTHERS INPUT MAINS INPUT MAINS SUPPLY L1 L2 L3 N SUPPLY L1 L2 L3 N OPRY Ipa A 1 Ka a ska AE UPS1 CB1 SWI C l l l I l Ser Y wic l l p4 l STATIC l SWITCH A l l l l I l l l l l l l l l FUSES FUSES IT STATIC SWITCH pA I l I l l l l HZ CHARGER CHARGER BATTERY 1 BATTERY2 INVERTER l 1 SW1 D l SW1 A l SW1 A Lee a E 4 A ee
101. ure could occur if they are subjected to shock loading When the equipment has been finally positioned ensure the adjustable feet are set so that the UPS will remain stationary and stable Floor Anchoring Diagrams in 4 0 Installation Drawings show the location of the holes in the base plate through which the equipment may be bolted to the floor If the equipment is to be installed on a raised floor it should be mounted on a pedestal suitably designed to accept the equipment point loading Refer to the base view Figure 18 to design this pedestal Cable Entry Cables can enter the Liebert NX UPS and battery cabinet from below Cable entry is made possible by removing a blanking piece fitted at the bottom of equipment to reveal the cable entry hole External Protective Devices Circuit breakers or other protective devices must be installed in the AC supply external to the UPS This chapter provides guidelines for qualified installers who must have knowledge of local wiring practices pertaining to the equipment to be installed Rectifier and Bypass Input Overcurrent protection must be installed at the distribution panel of the incoming main supply The protection must discriminate with the power cables current capacity and with the overload capacity of the system see Table 36 As a guideline a thermomagnetic circuit breaker with an IEC 60947 2 trip curve C normal for 125 of the current listed in Table 1 is suitable Split Bypass
102. verter will be shut down EOD is settable from 1V to 1 9V per VRLA cell or 1 0 to 1 3 V per NiCd cell Battery Isolator Open Warning If the battery isolator is open this warning will occur The external battery to the UPS through an external battery isolator which is manually closed and electronically tripped via the UPS control circuits 41 Operating Procedures 6 0 OPERATING PROCEDURES 6 1 6 1 1 A WARNING Hazardous mains and or battery voltage present behind covers No user serviceable parts are located behind covers that require a tool for their removal Only qualified service personnel are authorised to remove such covers Introduction The NX can operate in any of four modes as shown in Table 10 This section provides instructions on switching between modes resetting the UPS switching the inverter On and Off and performing other operations Table 10 UPS operating modes Rotary Switch Operating Mode Position Description Normal Operation NORMAL The UPS is powering the load BYPASS or The load power is supplied through the static bypass line This may be On Static Bypass considered as a temporary mode during load transfers between inverter NORMAL y A and maintenance bypass or supply under abnormal operating conditions No load power is supplied by the UPS The load is connected to utility On Test TEST power via the Maintenance Bypass Supply line NOTE The load is not protected against
103. ws a maximum of four computer systems to simultaneously monitor the status e g utility power failure low battery of a single UPS This card is supported in any of the three NX Intellislot bays 64 Options For Assembly Inside the UPS Cabinet Figure 37 SiteNet MultiPort4 Intellislot pin configuration Table 28 ups Tp PA st A c A 0 sul E SiteNet MultiPort4 Intellislot pin assignment Y 5 Assignment Description Low Battery Not Used Not Used Not Used Not Used Not Used Low Battery Common Utility Fail Common OJO J O OI BR Ww Mm Utility Fail CPU CPU CPU CPU 65 Options For Assembly Inside the UPS Cabinet 8 2 OC485 Web Card Modbus Jbus IGM Net The OpenComms 485 Card facilitates SiteScan Web or Building Management Systems monitoring The RS232 port is used for connection to a personal computer for setting up The RS 485 port supports IGM Net and Modbus JBus protocols and maps the operation of the UPS including status alarms and data voltages currents frequency power power factor temperatures etc Figure 38 OC485 Web card 8 2 1 Table 29 NX communication options On the UPS Physical Labeled LCD screen Monitoring description ID Name under Settings Devices Baud of port of Port controlled by supported rate Comments Multip
104. y room design 2 5 Battery Control Battery temperature sensor cables are connected between UPS auxiliary terminal block X3 BCB the Battery Temperature sensor and the battery as shown in Figure 6 Cables connected to X3 BCB must contain a protective earth wire or a shield be segregated from power circuits double insulated and of a typical 0 5 to 1mm2 cross section area for maximum runs between 25 and 50 meters respectively The shield should be connected to the protective earth of the battery cabinet or battery breaker not at the UPS 23 UPS Multi Module Installation 3 0 UPS MULTI MODULE INSTALLATION 3 1 General The installation of a multi module UPS configuration must follow the installation procedure for a sin gle UPS module with the additional requirements detailed in this chapter In addition to the local EPO push button on the front panel of the UPS module that stops operation of that module the UPS supports also a remote emergency stop to permit simultaneous multi module shutdown NOTES 1 The remote emergency power off switch must be voltage free and Normally Open or Normally Closed 2 The open voltage supplied is 12VDC lt 20mA 3 This external emergency stop may be supplied with a second set of contacts that can be used to trip incoming mains or bypass supply circuit breakers supplied by others and fi
105. y switch configurations e na 42 UPS control and display panel components na 49 Rectifier indicator cack Re ayes NS CARE wad ae ete WER en as EN a eden dein ates 50 Battery ni dica tor 2 so ar Nas a A A Uu Pca HUA RO had ab Sansa is 50 Bypass indicator 5354224 Ae NR A A BEAR bE ERS BER ERR al 50 Inverter InGic A ged ee Re ae tes oa Bh en de as Oe RN 50 Load indicator 425 Ea deed ESA a Ga Bw ah at SD Ba eda 50 Status Alarm IOndicator E aaa a aaa ee cee eee a a a GE a a aga aa a 50 Audible alarm key sa tds Beb Bah Gs Bh aS ak Re Se TK NG kage ooh re eh 50 Menu key Icons and their meaning eea 51 UPS system window A a a A a aa aa WOR aka be nh ank 53 Descriptions of UPS menus and data window items eee 53 UPS Messages a este Ra eels Whine Nae cinch at alte oats bag a E R fel 55 Prompt windows Meanings Tag e ai a Ba aaa an 59 Dry contact fault alarm signal is available for remote monitoring e 61 Relay Card pin configuration 64 SiteNet MultiPort4 Intellislot pin assignment ii 65 NX communication Options 66 Compliance with European international standards 0 0 ccc eee eens 67 Environmental characteristics ii 67 Overall efficiency heat losses and air exchange 67 Mechanical characteristics pss ga An Wade mann RAN e E EA BRA Pn Aa ana Rass 68 Rectifier AC input mains ii na 68 Inverter output to critical

Emerson Liebert NXE 20kVA

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