CPS 14kW User manual - Chint Power Systems North America
Contents
1. re D e e e e e o e e c ID a H A HHHH g o A Kl E i E Mt M culi E E a mm m m mM a m Im m Im In oo I PAN ra 3 coi ngogogng p H picca Poco soa Eee I G i PK 800000 I Figure 3 21 Diagram of communication wiring 33 4 Chapter 4 Operation 4 1 Start up and shut down 4 1 1 Start up Manual start up Manual start up is required after initial installation or manual fault shut down Move the cursor from the main operation interface to 4 Setting Press ENTER and go to the password input area enter password go to the submenu 1 ON OFF Then move the cursor to ON and press ENTER to start the inverter Then the inverter will start up and operate normally if the start up condition is met Otherwise the inverter stands by Automatic start up The inverter will start up automatically when the output voltage and power of PV modules meet the set point AC power grid is normal and the ambient tempera2. i A AH BARA do 3 kl 0 Dell I e E Im m an Di a7 kmnmmmmN e i OD DD DD DD EN U o o OM nm R c a l ml J G Su mu SL Ss Figure 3 12 Wire connection of DC input e The standard configuration is Parallel mode with 1MPPT working alone If it needs to switch to the Independent mode with 2MPPTs working independently please remove the red wire and black wire in the wiring box As shown in Figure 3 13 For the inverter with 2 MPPT working independently disconnect J1 IN1 with J3 IN2 wire socket in the Wiring box through the red disconnect J2 IN1 with J4 IN2 wire socket through the black wire in the wiring box as shown in Figure 3 13 27 Jt Hla CF MY anglo c ga ea B E esa gt
3. Parallel Inverter Mode Current 7 4A DC cable 18 10AWG Common 8 strings Configuration PVI lt 3 mH mir a IN1 2MPPT weg 3 RI Independent 3 aa Inverter Mode PV2 Da i Du ci PV2 lt 3 ptt 1MPPT Parallel Inverter Mode Current 6 5A DC cable 18 10AWG Note 1 The temperature rating of the input wirings should be no less than 90 C 194 F 24 Note 2 The recommended fuse types are configured according to the condition that the input strings are the same d CPS SC20KTL DO US 480 amp SC14KTL DO inverter is equipped with standard 15A DC fuses Customers must verify that the appropriate fuses are used depending on the actual configuration of PV strings 1 2 3 4 5 Each independent string of DC input from the PV strings needs fuse protection The rated voltage of fuse should be higher than the Max Voc of each PV string In order to keep the output power normal the rated current of fuse is generally larger than the 1 56 x Max output current from the PV strings In order to protect the PV strings the rated current of fuse should NOT be larger than the sum of the Isc of any two of the PV strings Make sure the rated current of fuse is as small as possible on the condition of normal output power The following table lists the fuse type specifications and number under the rated voltage and power range of 8 strings of PV panels Table 3 4 DC
4. 46 indication EN Derated running status light up 0 5s as light light off 1 6s Light In other operation status or power off supply not working Light Grid Grid is normal on status GRID Flash Grid fault light up 0 5s light off 1 6s indication Light light i Power supply not working 0 Light Indicates a Fault on Fault Slow Indicates Alarm light up 0 5s light off status flash 2s FAULT indication Fast Protective action light up 0 5s light light flash off 0 5s Light off No fault or power supply not working Table 5 2 Definitions of the keys Key Definition of function Escape key Back end mute Enter key Confirm entering the menu confirm set point Page up in selection menu 47 gt Down Page down in selection menu 1 when setting parameters Right 1 when setting parameters 5 2 Operation state Table 5 1 indicates the definitions of LED i e indicates the information of the inverter s operation state It indicates that the system is energized and under DSP control when POWER lights up RUN will light up when the inverter detects that the grid connection conditions meet the requirements and power is fed into the grid RUN will blink if the grid is in derated running state during the period of feeding power into the grid GRID will light up when the grid is normal during the operat
5. CPS SC Series Grid tied PV Inverter CPS SC14KTL DO US 208 CPS SC20KTL DO US 480 Installation and Operation Manual Version 1 4 CHINT POWER SYSTEMS AMERICA CO LTD Table of Contents Before You Start uuuuusnnennnnnnnennnnnnnunnnnnnnnnnnnnennnnnnnnnnsnnnnnnnnnnennnnnnnnnnsnnnnnnnnnnen 1 Chapter 1 IMPORTANT SAFETY INSTRUCTIONS 2 Chapter 2 Overview aaa 5 2 1 Inverter for grid tied PV systems i 5 2 2 Product type descriptioN ii 5 2 3 Product features uui ia 5 2 4 Circuit structure design iii 6 2 5 Appearance description i 7 Chapter 3 Installation ii 9 3 1 Basic MeQUIFEMENTS i 10 3 2 Mechanical installation nn nnnnnnnnnnnnenennnnnnnnnnnen nennen 11 3 3 Electrical installationN i 19 3 31 DG Connectioni lia 20 3 3 2 AC and ground connection nn 28 3 3 3 Communication connection i 31 Chapter 4 Operation aaa 34 4 1 Start up and shut down ii 34 AVA Stat UDe pedeir an aa ii 4 1 2 Shut down 4 2 Operation mode 4 3 Grid connection and power generation i 36 4 4 Fault SNUtAOWM VEPRFERERSEHERELHEEEREDELEREEETEREERELTEREELURTSGELHFEEEFEURTERPELFEREFERER 37 Chapter 5 User Interface uuneununennnnennennnnnnnnnennnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnn 46 5 1 Descripti
6. NOTICE This inverter is designed to connect AC power only to the public grid Do not connect the AC output of this equipment directly to any private AC power equipment INSTRUCTION Conduits shall be used as the cable protectors for wire connection Chapter 2 Overview 2 1 Inverter for grid tied PV systems CPS SC20KTL DO US 480 amp SC14KTL DO inverter is suitable for use with various commercial rooftop systems and distributed power station systems Normally the system mainly consists of PV modules DC power distribution equipments PV inverter and AC power distribution equipments Figure 2 1 The inverter converts the DC from PV modules to AC with the same frequency and phase as the AC grid All or part of the AC power is supplied to local loads and the surplus power is supplied to the electricity grid DC power AC power Bidirectional gt distribution gt electric meter distribution gt AC Grid equipments equipments Figure 2 1 Grid tied PV system 2 2 Product type description CPS SC20KTL DO US 480 amp SC14KTL DO is a two MPPT PV inverter integrated with the DC and AC switches for indoor and outdoor application The suffix US means that this model of inverter passes the UL certification and is specialized for the American market 2 3 Product features CPS SC20KTL DO US 480 amp SC14KTL DO inverter incorporates the
7. and fault mode as shown in Figure 5 6 The default indication interface mainly indicates PV voltage PV current grid voltage instant power daily generated power and time information under normal operation The fault information of the most recent current fault will be indicated on the LCD screen when the inverter is in fault mode 5 3 2 Main operation interface LCD screen displays default indication interface when the inverter is in operation mode Press ESC in this interface to escape the default interface and enter the main operation interface The main operation interface is shown in Figure 5 7 1 OP Info 2 Alarm 3 History 4 Setting 5 Dispatch Figure 5 7 Contents indicated on the main operation interface 50 The main operation interface of LCD screen has 5 menus i e 1 OP Info 2 Alarm 3 History 4 Setting and 5 Dispatch The users may select options with PAGEUP and PAGEDOWN and then press ENTER to confirm selection Return to the previous menu by pressing ESC 5 3 3 Operation information When the cursor moves to 1 OP Info in the main interface you should press ENTER to select the operation information as shown in Figure 5 8 Check the information by pressing PAGEUP and PAGEDOWN Return to the previous menu and enter the main operation interface by pressing ESC Yield 23 5kWh MPac 20 0kW FORIN
8. I N In Nan mo mM DD mm m mm m m a Im 10 DD ID On on CD DI fo mn gp ann mn ag en mg Figure 3 13 Wire connection in the Wiring box 1 MPPT working alone 3 3 2 AC and ground connection The following describes how to connect the AC output and grounding cables between the inverter and the public power grid 1 Use the recommended cables L1 Line 1 L2 Line 2 L3 Line 3 Neutral and Gnd Equipment grounding conductor 8 10AWG copper cored soft cables Table 3 8 Wiring requirement TG e e nem om Wire diameter 8 10AWG Torque 1 19N M 10 5Lb In value 2 Wire connection for AC output n Insert the cables through steel conduits and strip the skin 0 4 inch off the cables as shown in Figure 3 14 28 Figure 3 14 Diagram for wire stripping of AC output c Crimp the terminal as shown in Figure 3 15 Figure 3 15 Diagram for terminal crimping of AC output d Connect the L1 L2 L3 and Neutral red black blue grey AC output wires to the corresponding terminals on the PCB board 3 Wire connection for grounding a The Gnd wire Equipment grounding conductor is recommended to be green or green with continuous yellow stripes per National Electrical Code Insert the cable through the steel conduit and strip the skin 0 4 inch off the cables as shown in Figure 3 16 Figure 3 16 Diagr
9. In this mode the inverter converts the power generated by PV modules to AC continuously and feeds into the power grid 3 Standby mode as shown in Figure 4 3 The inverter will turn into standby mode when the output voltage and power of PV modules do not meet the startup conditions or PV voltage and input power are lower than the set point The inverter will check automatically whether it meets the startup conditions in this mode until it turns back to normal mode The inverter will switch from standby mode to fault mode if malfunction occurs 35 Standby gt gt gt gt gt gt Figure 4 3 Inverter system in standby mode 4 Fault mode as shown in Figure 4 4 The inverter will disconnect from the power grid and turn into fault mode when the inverter or power grid fails Check the specific cause through Troubleshooting table Table 4 1 in terms of the fault message displayed on the LCD and eliminate the fault according to the instructions SPICommeErr Figure 4 4 Fault indication interface WARNING All the installation and wiring connections should be performed only by qualified technical personnel Disconnect the inverter from PV modules and the Power Grid before maintaining and operating the equipment 4 3 Grid connection and power generation The grid connection and power generation process of CPS SC20KTL DO US 480 amp SC14KTL DO is automatic It will check constantly whe
10. The basic schematic diagram of CPS SC20KTL DO US 480 amp SC14KTL DO is shown in Figure 2 2 The input DC passes through surge protection circuitry AFD circuit DC EMI filter and the boost circuit to achieve maximum power tracking and boost up voltages The arc fault detection AFD is a device that can provide arcing protection for the PV system and wiring against the unwanted effects of arcing by enabling an interruption or shorting device to interrupt power delivered to an arcing fault The inverter converts the DC energy to 3 phase AC energy The high frequency components of AC 6 voltage are removed with a line filter Then the 3 phase AC energy is sent through two stage relays and EMI filter to produce high quality AC power DC_Switch itc _ INV Filter AC_Switch PV1 TT nm Te LI emt L ake mm EMI Ru pome K 4 Fitter TTT MN oe L3 t N AFD Lighting surge Filter 77 DC DC PE Figure 2 2 Schematic diagram of CPS SC20KTL DO US 480 amp SC14KTL DO 2 5 Appearance description Figure 2 3 Appearance sketch of CPS SC20KTL DO US 480 amp SC14KTL DO US 208 4 Description of main items of CPS SC20KTL DO US 480 amp SC14KTL DO US 208 See Figure 2 3 1 LCD key buttons operate the functions and change settings of inverter 2 LCD
11. information of 21 days before that date which is November 24th 3 Software version hardware version and serial number of the product 52 are listed in 3 Version menu 4 Cumulative generated power since the first day the inverter began working is available to be found in 4 TotalTag menu If not existed If existed No Alarm 1 St2010 12 15 20 50 SPICommErr 2 Ed2010 12 15 20 59 IntProtectl 3 History gt 1 ErrRecd 2 OP Recd 3 Version 4 TotalTag Pls Input Date 2 gt 12 15 RunT i Mpac Yield 7 0 h 20 0KW 123 5KWh Mach Ver 1 00 Serial No 10141106001 T Yield KWh 152123 5 Figure 5 10 History menu and submenu 5 3 6 System setup Move the cursor to 4 Setting in the main interface Press ENTER and go to the password input area enter password 4 u u go to the current system parameters as shown in Figure 5 11 There are 6 submenus in 4 Setting 1 Power ON OFF 2 Language 3 Sounds 4 SysTime 5 Commun and 6 ARC Setup 1 The inverter can be started and shut down with 1 ON OFF menu 53 G Move the cursor to ON and press ENTER ON State will then be indicated at the bottom of LCD screen move the cursor to OFF and press ENTER then OFF State will be indicated as well The inverter will
12. r 53m rs 420mm r16 54in mn 1 Bri i 750mm 29 53in min Figure 3 4 Bracket mounting dimensions b Drill holes at the marked positions with a diameter of 0 4 inch drill 14 and put the 6 M8 25 expansion bolts into the holes c Take the mounting bracket out of the package and secure the bracket on the wall with the 6 nuts in pair as shown in Figure 3 5 Figure 3 5 Positions of bolt holes on the bracket d Screw off the bolts and remove the two panels on both sides of the inverter as shown in Figure 3 6 15 cps ji 4 Figure 3 6 Removal of panels before mounting inverter e Two people grab at the position on each side lift up the inverter and then hang it on the bracket Figure 3 7a e Make sure the inverter is securely hooked on the bracket Hand Grab cps Figure 3 7a Mounting inverter on the bracket Figure 3 7b Mounting inverter on the bracket Figure 3 7c Mounting inverter on the bracket rpc o ll Ge Figure 3 7e Mounting inverter on the bracket f Put the two removed panels back and secure them with 4 M4 12 18 bolts on each side as shown in Figure 3 8 Figure 3 8 Securing panels on both sides 3 3 Electrical installation INSTRUCTION Metal conduits shall be used as the cable protectors for wire connection
13. Fuse selection Brand 4 Strings 5 strings 6 strings 7 strings 8 strings 14 Littelfuse KLKD 25 KLKD 20 KLKD 15 KLKD 12 KLKD 12 kW 25A 600V 20A 600V 15A 600V 12A 600V 12A 600V Brand 4 Strings 5 strings 6 strings 7 strings 8 strings 20 KLKD 30 KLKD 25 KLKD 20 KLKD 20 KLKD 15 kW Littelfuse 30A 600V 25A 600V 20A 600V 20A 600V 15A 600V Note 1 The input string size must be the same Note 2 The DC fuse protectors of different fusing capacity should be chosen according to the short circuit current of PV modules The 600VDC 25 cps Littelfuse KLKD fuse series are recommended The detailed information is available for customers to find and download from htto Awww littelfuse com b Insert the cables through steel conduits and strip the skin 0 4 inch off the cables as shown in Figure 3 10 Figure 3 10 Wire stripping of DC input c Crimp the terminal as shown in Figure 3 11 Figure 3 11 Terminal crimping of DC input d The order of wire connection from left to right is PV1 PV1 PV2 PV2 Connect the PV1 and PV2 to the corresponding fuse socket of the negative pole and connect the PV1 and PV2 to the corresponding fuse socket of the positive pole with the torque value of 1 2N M 10 6Lb In 26
14. Inverter cable terminals of CPS SC20KTL DO US 480 amp SC14KTL DO are shown in Figure 3 9 Figure 3 9 Inverter cable terminals Knockout holes for 1 amp 1 25inch conduit of DC inputs knockout hole for 1 amp 1 25inch conduit of AC output and ground cables Knockout hole for 0 5 amp 0 75inch conduit of communication cables 3 3 1 DC connection 1 To ensure the optimal performance of the inverter please read the following guidelines before DC connection a First make sure that the maximum open circuit voltage of the PV modules is lower than 600Vdc under any conditions b Confirm that the PV modules for each MPPT of the inverter are of the same types and specifications before connection The number orientation and tilt of PV modules may differ for different application c Configure the external wiring according to the following conditions 20 Rare Configuration 2 strings 2MPPT Independent Mode Bypass Fuse PV1 IN1 i 2 PVI gt Inverter PV2 IN2 i z N PV2 gt 1MPPT Parallel Mode Bypass Fuse PVI PVI Inverter PV2 PV2 gt Current 26A DC cable 10 6AWG Fuse NA Com
15. Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Contact after sales service personnel Definition Ambient temperature or temperature inside inverter is too high Possible causes 1 Ambient temperature outside the inverter is too high 2 Fan is blocked 3 Cooling is affected because of incorrect installation inve Recommended solutions 1 Confirm that external ambient temperature is within the specified range of operating temperature 2 Check whether radiation air inlet is blocked 3 Whether radiation fan is blocked 4 Check whether the location of installation is appropriate or not 5 Observe for 30 minutes and see whether the alarm will be eliminated automatically 6 Contact after sales service personnel 40 3 GridF OutLim Grid voltage exceeds the specified range Possible causes 1 Grid voltage is abnormal Power grid breaks down 2 Cable connection between the inverter and the grid is poor Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check whether the grid voltage is within the specified range 3 Check whether the cable between the inverter and power grid is disconnected or has abnormalities 4 Contact after sales service personnel Definition Grid voltage frequency is abnormal or power grid is not detected Possible causes 1 Grid frequency has abnormalities 2 Cable connection b
16. advanced 3 level and MOSFET paralleled with IGBT technology to minimize the energy loss Meanwhile the arc fault detection AFD function is added to meet the requirements of UL1699B for DC arc 5 4 The two MPPT design has the benefit of increasing the power generating efficiency of the whole PV system The inverter has 2 MPPTs so a separate array can be controlled by an independent Maximum Power Point Tracking MPPT control circuit This means that the two arrays can be installed in different positions and orientations The transformerless design of inverter with the benefit of small size light weight and high power density provides the best cost performance for the whole PV system The inverter is available for both indoor and outdoor applications due to its NEMA 3R IP65 protection class enclosure Integrated AFCI Arc Fault Circuit Interruption feature enables the need to meet advanced local electrical and grid codes This feature is disabled by default but can be enabled if needed in the field Please contact CPS at HOTLINE 855 584 7168 number to get instructions The integrated DC and AC switches make the maintenance more flexible and safer Besides the inverter has the function to support one or two independent MPPTs input to improve the system efficiency Meanwhile the inverter can automatically identify the connection way between PV modules due to its excellent self adaption ability 2 4 Circuit structure design
17. stand by instead of working normally if the startup conditions are not satisfied even ON is selected The inverter will be shut down immediately if OFF is selected in any cases 2 Two languages i e English and Chinese are available in 2 Language menu 3 Key beep and Alarm beep can be set mute unmute in 3 Sounds menu Key beep and Alarm beep can be chosen by pressing PAGEUP and PAGEDOWN Shift between Enable and Disable by pressing Left and Right if the cursor is on the Key beep Complete the setup by pressing ENT Similarly the Alarm beep can be set up as well 4 Set up the system date and time with 4 SysTime menu These parameters are of critical importance and will be used in history information Select year month day hour and minute by pressing Page Up Page Down and set up the specific date and time by pressing Left and Right 5 Set the 485 communication parameters with 5 Commun menu 6 Arcing check and protection is mainly divided into two parts the Arcing check board is responsible for whether there is Arcing in line and transfer Arcing protection signal to the DSP in the dominating control board The control board DSP is responsible for the control of inverter off the grid after receiving Arcing signal to ensure safety The Arcing board failure will cause arc board err shown on the LCD and it will not connect to the grid until the arc board is OK If
18. 2 Detect whether the electrical connection is abnormal 3 Contact after sales service personnel Definition Insulation impedance of PV positive to ground or PV negative to ground exceeds the specified range Possible causes Air humidity is high Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check insulation of PV system 3 Contact after sales service personnel Definition Internal protection of the inverter Possible causes Protection procedure occurs inside the inverter Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Contact after sales service personnel Definition The electric arc occurs in the circuit Possible causes 1 The electric arc occurs on the DC side 2 Fault with the ARC board 9 ARC Protect Recommended solutions 1 Check whether the circuit is in good condition including the cable aging and animal gnawing If no problem is found restart the inverter to clear the ARC Protect alarm 2 Contact after sales service personnel Definition Self checking of the ARC board fails Possible causes 1 Communication error in the connection between the ARC board and the inverter 2 Abnormal with the ARC board 10 ARC Board Recommended solutions Error 1 Check whether the communication cable of the ARC board is normal Turn off the power supply and restart th
19. O gt Pac 19 8kW RunT 12 1 h y Uab 480 0V Ubc 480 9V Uca 480 5V Freq 60 0Hz y la 24 1A Ib 24 0A Ic 24 0A y T mod 78 2C T amb 50 C v Upv1 540 0V Ipv1 18 5A Upv2 500 0V Ipv2 20 2A Figure 5 8 Operation information indication 51 5 3 4 Alarm As described before when faults occur during the normal operation of the inverter corresponding fault message will be indicated in 2 Alarm menu besides the sound and light alarms Move the cursor to 2 Alarm and press ENTER to check out the specific fault information as shown in Figure 5 9 2 Alarm If not existed No Alarm SPICommErr existed IntProtectA Figure 5 9 Alarm failure information 5 3 5 History Move the cursor to 3 History in the main interface Press ENTER to check the history information as shown in Figure 5 10 There are 4 submenus in 3 History 1 ErrRecd 2 OP Recd 3 Version and 4 TotalTag 1 UP to 100 pieces of latest fault messages can be recorded and found in 1 ErrRecd menu 2 The latest 21 days operation history data is available to be found in 2 OP Recd menu All variable names in the data comply with the content in 1 OP Info menu of the main interface The users can select the 2 OP Recd menu and input the retraceable days For example the input number is 21 If the current date is December 15th the LCD will indicate the operation
20. Power and PowerFactor parameters can be set up through LCD operations as well as remote control by software Local dispatch order Service personnel can adjust the ActivePower and PowerFactor parameters through LCD operations For detailed setup steps please refer to 5 3 8 System protection parameters setup The current parameters of ActivePower and PowerFactor can be checked by the following steps Move the cursor to 5 Dispatch in the main interface as shown in Figure 5 12 1 OP Info 3 Dispateh 2 Alarm 3 History 4 Setting Figure 5 12 Contents indicated on the main operation interface Press ENTER to the interface shown in Figure 5 13 ActivePower 100 0 PowerFactor 1 000 Figure 5 13 Parameters of power dispatch Remote dispatch method The ActivePower and PowerFactor 56 parameters can be adjusted through remote monitoring software 2 For CPS SC14KTL DO US 208 the following applies Move the cursor to 5 Power PF in the main interface Press ENT to access and check the parameters of ActivePower and PowerFactor as shown in Figure 5 14 The user can set the parameters of the two options through LCD operations as well as remote control by monitoring software Local Command ActivePower 100 0 PowerFactor 1 000 Dispatch Command Figure 5 14 Optio
21. T Max Short Circuit Current lsc 90A 45A per MPPT 91A 45 5A per MPPT sc Number of DC Inputs and Fuses 8 fused conductors 4 per MPPT DC Disconnection Type Switch AC Output Rated AC Output Power 14kW 20kW Max AC Output Power 14kW 20kW Rated Output Voltage 208Vac 480Vac Output Voltage Range 183 228Vac 422 528Vac Exceeding the rated voltage shown in Max DC Input Voltage damage to the equipment 69 may cause permanent Grid Connection Type 30 N PE mn Neutral Connection Max AC Output Current 39A 24A Rated Output Frequency 60Hz Output Frequency Range 59 3 60 5Hz Power Factor gt 0 99 Adjustable 0 9 Current THD lt 3 AC Disconnection Type Switch System Topology Transformerless Max Efficiency 96 7 97 4 CEC Efficiency 96 0 97 0 Stand by Night lt 20W lt 2W Consumption Environment Protection Degree NEMA 4 IP65 Cooling Variable speed cooling fans Operating Temperature Range 13 F to 140 F 25 C to 60 C derating from 50 C 122 F Storage Temperature Range 22 F to 158 F 30 C to 70 C Operating Humidity 0 95 non condensing Operating Altitude 6562ft 2000m derating from 4921ft 1500m Display and Communication Display LCD LED Communication RS485 Modbus Mechanical Data Dimensions WxHxD 21 4x41 6
22. alarm interface will be indicated 61 4 3 3 Recover menu the manufacturer s parameter default value can be restored when the inverter is not in operation mode Otherwise a FaultOperated will be prompted 4 In 4 ClrErrRecd menu history information of the faults can be cleared A confirmation is required to clear the records Figure 5 18 System parameter setup 62 GridV Max V GridV Min V GridF Min Hz 528 gt 422 59 30 GridVmaxTripT S GridVminTripT S GridFTripT S 1 80 1 80 0 08 Pls Input Pwd 1 SysPara oer 2 Restart Are You Sure 3 Recover 4 ClrErrRecd ST ae Restarting 2 PwdError Initialization Pls Input Again Success Recovering FaultOperated Failure Success Clear Errors gt FaultOperated Failure Success Chapter 6 Service and Maintenance CAUTION Although designed to meet international safety standards the PV Inverter can become hot during operation Do not touch the heat sink or peripheral surfaces during or shortly after operation The CPS SC20KTL DO US 480 amp SC14KTL DO inverter is usually maintenance free The following regular maintenance steps must nevertheless be carried out at regular intervals to e
23. am for wire stripping of grounding conductor b Crimp the terminal with the ring terminal in the accessory kit as shown in Figure 3 17 29 Figure 3 17 Diagram for terminal crimping of grounding conductor c Connect the Gnd cable with a M5 nut at the marked place on the lower right side of the Wiring box as shown in Figure 3 18 a The Gnd cable can also be connected to the copper stick as shown in Figure 3 18 b Figure 3 18 a Diagram of AC output and ground cable connection Figure 3 18 b Diagram of AC output and ground cable connection 30 4 When the output of the inverter is connected to the grid an AC circuit breaker is required to be installed to safely disconnect the inverter from the grid when overcurrent happens Either a 3 pole or a 4 pole AC circuit breaker can be used The maximum breaker size allowed is 50A and 40A respectively for 14kW and 20kW inverter A smaller breaker may also be used keeping in mind that a smaller breaker may result in nuisance trips that may need servicing Table 3 8 Specification of AC breaker selection 3 3 3 Communication connection There are two RS485 signal ports on the inverter Shielded cables should be used for communication cables with the maximum length of 3280 fe
24. ation and operation difficulties Please keep this manual on hand for quick reference 4 Chapter 1 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS Please read this user manual carefully before product installation CPS reserves the right to refuse warranty claims for equipment damage if the user fails to install the equipment according to the instructions in this manual Warnings and symbols in this document DANGER DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE NOTICE indicates a hazardous situation which if not avoided could result in equipment working abnormally or property loss OP Fr ee INSTRUCTION INSTRUCTION indicates important supplementary information or provides skills or tips that can be used to help you solve a problem or save you time Markings on the product A HIGH VOLTAGE The product works with high voltages All work on the product must only be performed as described in this document A HOT SURFACE The equipment is designed to meet international safety standards but surfaces can become hot during operation Do not touch the heat sin
25. display indicates data 3 LED indicator lights indicate the status of inverter 4 Holes for cable entry 5 DC switch control the DC power on and off 6 AC switch control the AC power on and off 7 Main housing 8 Wiring box Chapter 3 Installation Below is the installation instruction of the inverter Please read carefully and install the product step by step 1 CPS SC20KTL DO US 480 amp SC14KTL DO US 208 Check and make sure that the following items are included in the package before installation as shown in Table 3 1 Table 3 1 Main items SC20KTL DO US 480 or SC14KTL DO Grid tied PV inverter Grid tied PV inverter upon which Inverter Mounting bracket is hung and mounted onto a wall Installation and Installation and operation manual operation manual contains all Accessory kit necessary accessories The 5 Accessory kit contains items listed below Table 3 2 Accessories tem o me M8x25 Expansion 8 pairs for bracket installation bolts amp nuts OT type terminal 1 forgroundcable forgroundcable ground cable 16 for DC input cables 4 Pre insulated end ferrule for AC output cables RJ45 connecters for communication cables for grounding wire 1 nut for Flange M5 nut backup use for inverter with 1 MPPT Red wire working alone for inverter with 1 MPPT Black wire working alone 3 1 Basic requirements v Check that the product environmental specifications
26. e inverter to see whether the alarm will be eliminated automatically 2 Contact after sales service personnel Note The ARC Board Error doesn t interfere with the normal operation of the inverter Definition Fault IntFaultA O Internal fault of the inverter 44 Possible causes Fault occurs inside the inverter Recommended solutions 1 The inverter can be forced to restart once if it is required by operation and if it is confirmed that there is no other problem 2 Contact after sales service personnel INSTRUCTION The actual display of PV VoltOver is PV1VoltOver or PV2VoltOver The actual display of PV Reverse is PV1Reverse or PV2Reverse 45 4 Chapter 5 User Interface 5 1 Description of LCD panel The CPS SC20KTL DO US 480 amp SC14KTL DO LCD panel mainly consists of LCD screen LED indicator lights buzzer and 6 keys as shown in Figure 5 1 ann i ci Figure 5 1 LCD panel Interpretation for the indicator lights is shown in Table 5 1 and function of the keys is shown in Table 5 2 Table 5 1 LED Indication LED light Name Status Indication Light Energized control panel starts to Working on work POWER power Light light Power supply not working off Grid tied Light RUN l In grid tied power generation state operation on
27. et 1 The communication of one single local inverter is to connect the RS485 communication bus cable through the RS485 1 or RS485 2 port of the inverter directly Wiring requirement of RS485 1 2 is shown in Table 3 9 Table 3 9 RS485 1 2 wiring requirement cen ne 2 The wires are labeled 1 8 from left to right as shown in Figure 3 19 a EIA TIA 568B Figure 3 19 Diagram of RS485 1 2 wiring 3 RS485 network connection When the inverters are monitored via the RS485 communication the unique RS485 address for each inverter can be set through the LCD interface Up to 31 inverters can be connected together in the RS485 communication network The Daisy chain topology is recommended for the RS485 network connection as shown in Figure 3 20 Other communication topologies such as the star networks are not recommended 32 Datalogger Figure 3 20 RS485 connection between inverters and datalogger 4 A terminal resistance of 120 ohms connected between Pin 1 and Pin 3 of RS485 1 2 of the first inverter in the multiple inverters string and data logger as shown in Figure 3 20 is recommended 5 The connection inside the Wiring box of the inverter after the first one is shown in Figure 3 21
28. etween the inverter and the grid is poor Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically 2 Check whether the grid frequency is within the specified range 3 Check whether the cable between the 41 4 PV1 2 VoltOver 5 PV1 2 Reverse 6 GFCI Err inverter and power grid is disconnected or has abnormalities 4 Contact after sales service personnel Definition PV voltage exceeds the specified value Possible causes PV over voltage Recommended solutions 1 Observe for 30 minutes and see whether the alarm will be eliminated automatically 2 Check whether PV voltage exceeds the specified range 3 Turn off the PV input switch wait for 5 minutes and then turn on the switch again 4 Contact after sales service personnel Definition PV module is connected inversely Possible causes PV positive pole and negative pole are connected inversely Recommended solutions 1 Check whether positive pole and negative pole are connected inversely 2 Contact after sales service personnel Definition System leakage current is too high Possible causes 1 Excessive parasitic capacitance on PV 7 IsolationErr 8 IntProtectA Z module due to environmental factor 2 Grounding is abnormal 3 Fault inside the inverter Recommended solutions 1 Observe for 10 minutes and see whether the alarm will be eliminated automatically
29. ion of the inverter Otherwise GRID will blink until the grid restores to normal FAULT will blink quickly as a fault except grid abnormality occurs FAULT will not light out until the fault is eliminated The light will blink slowly when an alarm occurs FAULT keeps being lighted up when an internal fault occurs The buzzer will give alarms if a fault involving power grid abnormality occurs 5 3 Interface and menu functions Users can perform the corresponding operations with the 6 function keys according to the indications of the LCD display 5 3 1 Interface types 1 The LCD interface starts with the company logo once the system is 48 energized as shown in Figure 5 2 Figure 5 2 LOGO interface 2 Indication of inverter operation mode Sys Checking gt gt gt gt gt gt Figure 5 3 Inverter system check ongoing Standby gt gt gt gt gt gt Figure 5 4 Inverter system in standby mode Figure 5 5 Default display interface for normal operation SPICommeErr Figure 5 6 Fault indication interface LCD screen will display different mode interfaces based on the operation modes of the inverter There are four operation modes startup system check mode as shown in Figure 5 3 stand by mode as shown in Figure 5 4 normal operation mode as shown in Figure 5 5 the switching time between a and b is 5 seconds
30. k or peripheral surfaces during or shortly after operation EARTH GROUND This symbol marks the location of grounding terminal which must be securely connected to the earth through the PE protective earthing cable to ensure operational safety DANGER Please disconnect the inverter from AC grid and PV modules before opening the equipment When the PV array is exposed to light it supplies DC voltage to this equipment Make sure hazardous high voltage and energy inside the equipment has been discharged Do not operate or maintain the inverter until at least 10 minutes after disconnecting all sources from DC and AC sides WARNING All the installation and wiring connections should be performed only by qualified technical personnel Disconnect the inverter from PV modules and the Power Grid before maintaining and operating the equipment CAUTION CPS SC20KTL DO US 480 amp SC14KTL DO inverter is approx 63kg 132 pounds Please ensure the mounting is properly installed before hanging the the inverter on the bracket CAUTION CPS SC20KTL DO US 480 amp SC14KTL DO series inverter have the Arc Fault Detection feature in the disabled mode by default Please ensure that this setting meets local code requirements If you need to enable this feature for your install then please call our HOTLINE 855 584 7168 or contact your local sales or service manager for assistance
31. mon 4 strings Configuration 2MPPT Independent Mode Inverter 1MPPT Pere Inverter Mode Current 13A DC cable 16 10AWG Common 5 strings Configuration 2MPPT Independent Mode PVI PVI pv2 lt Inverter pv2 1MPPT Parallel Mode Inverter Current 10 4A DC cable 16 10AWG Common Configuration 6 strings 22 2MPPT Independent Inverter Mode u ml IE m 1MPPT m IR m Parallel ci CS Inverter Mode 4 Current 8 7A DC cable 18 10AWG Common 7 strings Configuration 2MPPT Independent Inverter Mode 23 1MPPT
32. ns of Power PF Press ENT to access the Power Control menu as follows ActivePower 100 Reactive Mode PF P Figure 5 15 Power control menu The active power parameters are adjustable from 0 to 100 0 in the ActivePower menu You can select the specific reactive mode in the ReactiveMode menu 57 4 The ReactiveMode menu has 6 submenus Figure 5 16 including 1 None 2 Dispatch 3 Q Set 4 PF Set 5 PF P Set and 6 Q U Set 1 None 2 Dispatch 3 Q Set 4 PF Set Figure 5 16 Submenus of ReactiveMode 1 None No mode Disable reactive mode 2 Dispatch Remote power dispatch mode Note When the dispatch mode is selected the reactive parameters of the inverter will change according to the remote change order including ActivePower PF and Q values ActivePower 1 None 100 0 EN 2 Dispatch ReactiveMode 3 Q Set None 4 PF Set Figure 5 17 Enable the dispatch function 3 Q Set Set the Q mode Note Change the reactive power by adjusting the Q value reactive compensation 4 PF Set Set the PF mode Note Change the reactive power by adjusting the PowerFactor 58 5 3 8 System protection parameters setup In standby mode press PAGEDOWN and ENTER at the same time in the main interface and enter the password PAGEUP gt PAGEDOWN gt RIGHT gt LEFT the system parameter setup menu i
33. nsure the inverters operation with optimal performance 6 1 Disassembling of fan tray assembly 1 Screw off the bolts and remove the two panels on both sides of the inverter as shown in Figure 6 1 Tool PH2 cross screwdriver Fan tray assembly is inside the slot 63 PDE Ly f Figure 6 1 Removal of panels on both sides 2 Disconnect the fan tray assembly from the inverter by unplugging the wire connectors as shown in Figure 6 2 Figure 6 2 Unplugging the wire connectors 3 Remove the 4PCS screws off the fan bracket as shown in Figure 6 3 and 6 4 Tool 0 12 inch Hexagon socket screw key Figure 6 4 Unscrew the fan bracket on the right side 4 Pull out the fan tray assembly from the left side of inverter as shown 64 4 in Figure 6 5 Figure 6 5 Pulling out the fan tray assembly 5 Use a dry cloth to clean the fan tray assembly to prevent dirt accumulating on it Do not use abrasive cleaning agents to avoid the damage of fans 6 2 Restoring of fan tray assembly 1 Insert the fan tray assembly from the left side of the inverter as shown in Figure 6 6 Figure 6 6 Inserting the fan tray assembly 2 Hook the fan tray assembly inside the Main housing at the right end as shown in Figure 6 7 65 Figure 6 7 Hooking the fan tray assembly 3 Make sure the wire connectors reveal from the right hole and the bracket is well connected as sho
34. on of LCD panel i 46 5 2 Operation state ii 48 5 3 Interface and menu functions i 48 5 3 1 Interface types neno ziii aain 48 5 3 2 Main operation interfaC e ii 50 5 3 3 Operation information i 51 5 34 Alatri 52 Ae nSt u 1 1 0 5 APSPPREPERERPERSPFEREERILELEEFELLTTEIEPRFEETEREHEITEEREEEEFFEPERLTTENLERELEGEEFERIETEFFE 52 5 3 6 System Setup 53 5 3 7 Power DIspatchi j ccca Siani 56 5 3 8 System protection parameters SEetup 59 Chapter 6 Service and Maintenance uuunssnsnsonsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 63 6 1 Disassembling of fan tray assembly i 63 6 2 Restoring of fan tray assemDIY ii 65 Chapter 7 Technical Data 69 Chapter 8 Limited Warranty usrsnsnennerennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnn 73 Before You Start This manual contains important information regarding installation and safe operation of this unit Be sure to read this manual carefully before using Thanks for choosing this CPS Grid tied PV Inverter This PV Inverter is a high performance and highly reliable product specifically designed for the North American Solar market If you encounter any problems during installation or operation of this unit first check this manual before contacting your local dealer or supplier Instructions inside this manual will help you solve most install
35. protection degree operating temperature range humidity and altitude etc meet the requirements of the specific project location v Make sure that the power grid voltage is within normal range v Ensure that the local electricity supply authority has granted permission to connect to the grid v Ensure that local code requirement is met by enabling the AFCI function from the LCD screen This feature is disabled by default but can be enabled in the field v Installation personnel must be qualified electricians or people who have received professional training v Sufficient space is provided to allow the inverter cooling system to operate normally v Install the inverter away from flammable and explosive substances v Avoid installing the inverter in locations that exceed the temperature 10 limits specified in the inverter data sheet to limit undesirable power loss v Do not install the inverter near the electromagnetic source which can compromise the normal operation of electronic equipment 3 2 Mechanical installation 1 Dimensions The dimensions of CPS SC20KTL DO US 480 amp SC14KTL DO inverter are shown in Figure 3 1 21 42in 544mm 41 73in Bean Figure 3 1 Dimensions of CPS SC20KTL DO US 480 amp SC14KTL DO US 208 11 2 Installation method Make sure that the mounting structure wall rack etc is
36. requency trip time Class Min grid 11 F Minl Hz 57 00 59 3 60 00 frequency Class Min grid 12 FminTripTI S Bu 0 08 0 16 600 00 frequency trip time Max grid voltage recover 13 V MaxRecover 208 0 225 249 0 value Min grid voltage recover 14 V MinRecover 104 0 186 208 0 value 60 V RecoverT S Grid voltage recover time 0 08 300 600 00 Max grid frequency F MaxRecover 50 00 60 4 62 00 recover value Min grid frequency F MinRecover 58 00 59 4 60 00 recover value ol 2 00 Grid frequency recover F RecoverT i 0 08 300 600 00 ime PVStartVol V PV startup voltage 150 0 295 310 0 SoftStep KW S 0 1 0 1 1 g 16 17 18 19 0 2 INSTRUCTION The function of active power derating and reactive power compensation is optional For detailed information you may call our after sales service center 2 2 Restart menu If an internal fault shutdown happens a severe fault has occurred inside the inverter The user may perform a force restart once in this menu if the user needs to restart the inverter INSTRUCTION The Restart function is effective only when the fault IntFaultA O in the troubleshooting table occurs The inverter may restore to normal operation automatically if alarm or protection faults occur This function will not respond when the inverter is in operation mode and a FaultOperated
37. rvice personnel Definition Communication inside inverter fails Possible causes 1 Communication circuits inside inverter are loose 2 LCD software problem 3 Inverter software problem Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Turn off 3 phase working power supply and then reboot the system 3 Contact our after sales service center 3 IntFanErr 4 ExtFanErr 5 EepromErr Definition Fan invisible from outside inside inverter is working abnormally Possible causes 1 Fan service life has expired 2 Fan socket connecter has poor contact Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Switch off 3 phase work power supply and then reboot the system 3 Contact after sales service personnel Definition The visible fan from outside view is working abnormally Possible causes 1 Fan is blocked 2 Fan service life has expired 3 Fan socket connecter has poor contact Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Check for foreign matters on fan blades 3 Switch off 3 phase work power supply and then reboot the system 4 Contact after sales service personnel Definition Internal alarm 39 Possible causes Internal memory has a certain problem Recommended solutions 1
38. s accessed This menu includes 4 submenus 1 SysPara 2 Restart 3 Recover and 4 ClrErrRecd as shown in Figure 5 18 1 Set up the system protection parameters in 1 SysPara menu The specification of protection parameters is shown in Table 5 3 Table 5 3 a Protection Parameters Table for CPS SC20KTL DO US 480 ioe Setup range lower limit default No Description of parameter a amp upper limit 0 05 1 80 2 008 0 05 1 80 2 00S 50 00 60 50 65 00Hz 45 00 59 30 60 00Hz 7 0 05 0 16 300 008 200 600 1200K0 10 0 900 1 000 0 900 59 4 Table 5 3 b Protection Parameters Table for CPS SC14KTL DO US 208 Setup range lower limit No LCD indication Description default amp upper limit 9 V Maxl V Class Max grid voltage 224 0 228 8 249 0 VmaxTripTI S Class Max trip time 0 08 1 00 600 00 3 V Minl V Class Min grid voltage 104 0 183 187 0 Class Min grid voltage VminTripTI S i 0 08 2 00 600 00 trip time 5 V Maxll V Class II Max grid voltage 0 249 6 485 0 Class Il Max grid voltage VmaxTripll S a 0 08 0 16 600 00 trip time 7 V Minll V Class II Min grid voltage 100 0 104 183 0 Class II Min grid voltage VminTripTII S o 0 08 0 16 600 00 trip time Class Max grid F Maxl Hz 60 00 60 5 63 00 frequency Class Max grid 10 FmaxTripTI S Ba 0 08 0 16 600 00 f
39. suitable to support the inverter weight Follow the mounting guidelines below a If the location permits install the inverter vertically b If the inverter cannot be mounted vertically it is allowed to be tilted backward by Max 15 c Do NOT mount the inverter forwards d Do NOT mount the inverter in a horizontal position e Do NOT mount the inverter upside down c d e Figure 3 2 Mounting the inverter properly 12 NOTICE When the inverter is mounted backward by lt 15 outdoor shield cover is required to be installed above the inverter to avoid direct sunlight 3 Space required for inverter mounting on the wall as shown in Figure 3 3 The distances between the inverter and the surrounding objects should meet the following conditions two sides from the walls 211 81 inches top distance 211 81 inches bottom distance 223 62 inches the minimum spacing between two adjacently mounted inverters 223 62 inches gt soom Min 11 81in gt men 2 300MM gt 600MM 23 62in 11 81in gt 600MM 23 62in Figure 3 3 Inverter mounting dimensions 13 4 the inverter a Mark the 6 bolt holes for mounting the bracket as shown in Figure 3 4 3 Secure the bracket with bolts through the mounting holes and install 420mm 16 54in min 150 0mm en
40. ther AC power grid meets the grid connection and power generation 36 conditions At the same time it will also check whether the DC input of PV modules is sufficient The inverter will turn into normal operation mode when both of AC and DC conditions are fulfilled The inverter will disconnect from the power grid and switch to standby mode when the sunlight is weak and power generation is small The inverter will try to reconnect to the power grid and generate power again when the voltage of PV modules is stable and higher than the set point 4 4 Fault shutdown The inverter will be shut down automatically when the PV power generation system fails such as output short circuit grid overvoltage undervoltage grid overfrequency underfrequency high ambient temperature or internal malfunction of the machine The causes of fault can be identified based on the faults listed in Table 4 1 Proper treatment is recommended before contacting after sales service There are mainly 3 types of faults alarm protection and hardware fault 37 Table 4 1 Troubleshooting Table 1 TempSensorErr 2 SPICommErr Definition Prompt detection of abnormal temperature Possible causes 1 Temperature Sensor socket connecter has poor contact 2 Temperature Sensor is damaged Recommended solutions 1 Observe temperature display 2 Switch off 3 phase working power supply and then reboot the system 3 Contact after sales se
41. there is Arcing fault the LCD displays the fault which can only be cleared manually The inverter ships in a default AFCI disabled mode The 6 ARC Setup has two submenus i e ARC Option and ARC Clear 54 1 ARC Option is used to control the ON OFF of the ARC function Enable means to turn on this function while Disable means to turn it off by pressing and to select Press ENTER to confirm 2 ARC Clear is used to clear the ARC fault protection When the ARC Protect occurs the system cannot clear the fault automatically Users can go to the menu move the cursor to the ARC Clear and press ENTER to clear the ARC protect Note The warning Arc board Err cannot be cleared by ClearErr If the Arc board Err occurs the fault system will continuously detect the status of Arc board and won t clear the fault until the Arc board works normally gt ON OFF ON 1 Power ON OFF gt 1PX 2 Language gt 2 English 4 Setting 3 Sounds 4 SysTime 5 Commun 6 Arc Setup KeyBeep Enabled AlarmBeep Disabled I 2009 12 15 21 14 ARC Operation Address 2 Enable a BaudRate 1 CleraErr 1 9600 2 19200 Figure 5 11 System setup menu and submenu 55 a 5 3 7 Power Dispatch 1 For CPS SC20KTL DO US 480 the following applies Active
42. ture is within allowable operating range 4 1 2 Shut down Manual shutdown Normally manual shutdown is not required It can be shut down manually if repair or maintenance is required Move the cursor from the main operation interface to 4 Setting Press ENTER and go to the password input area enter password gt 4 lt go to submenu 1 ON OFF Move the cursor to OFF and press ENTER and then the inverter will be shut down Automatic shutdown The inverter will shut down automatically when the output voltage and power of PV modules are lower than the set point or AC power grid fails or the ambient temperature exceeds the normal range 4 2 Operation mode There are 4 operation modes The following are corresponding indications 34 for each mode 1 System check mode for start up as shown in Figure 4 1 Sys Checking gt gt gt gt gt gt Figure 4 1 System self check ongoing This mode indicates that the inverter is checking whether it is ready for normal operation after the manual start up of the inverter 2 Normal operation mode Default indication interface for normal operation of CPS SC20KTL DO US 480 amp SC14KTL DO is shown in Figure 4 2 a and 4 2 b The switching time between a and b is 5 seconds PV1 PV2 540 v 540 v 18 5 A 18 5 A 08 12 13 10 05 08 12 13 10 10 a b Figure 4 2 Default indication interface for normal operation
43. upport For Warranty terms please refer to the CPS America standard warranty policy in place at time of purchase 73 CHINT POWER SYSTEMS AMERICA CO LTD Address 700 International Parkway Suite 102 Richardson Texas 75081 Service Hotline 855 584 7168 Email AmericaSales chintpower com SHANGHAI CHINT POWER SYSTEMS CO LTD Headquarters Building 4 No 855 Wenhe Road Songjiang District Shanghai China Tele 86 21 3779 1222 6300 Fax 86 21 3779 1222 6001 Website www chintpowersystems com CPS SC20KTL DO US 480 amp SC14KTL DO Installation and Operation Manual This manual is subject to change without prior notification Copyright is reserved Duplication of any part of this issue is prohibited without written permission
44. wn in Figure 6 8 and 6 9 Figure 6 9 Fan tray assembly well connected 4 Connect the fan tray assembly with the inverter by plugging the wire connectors as shown in Figure 6 10 66 cps Figure 6 10 Plugging the wire connectors 5 Fix the left side of fan bracket on the Main housing with 2PCS screws as shown in Figure 6 11 Tool 0 12 inch Hexagon socket screw key Figure 6 11 Fixing the fan bracket on the left side 6 Fix the right side of fan bracket on the Main housing with 2PCS screws as shown in Figure 6 12 Tool 0 12 inch Hexagon socket screw key Figure 6 12 Fixing the fan bracket on the right side 7 Put the two removed panels back and secure the M4 screws on both sides with a torque value of 1 76N M 15 6Lb In as shown in Figure 6 13 Tool PH2 cross screwdriver 67 Figure 6 13 Securing panels on both sides 68 Chapter 7 Technical Data CPS CPS Model Name SC14KTL DO US 208 SC20KTL DO US 480 DC Input Max PV Power 19kW 9 5kKW MPPT 27kW 13 5kW MPPT Nominal DC Input Power 14 6kW 21kW Max DC Input Voltage 600Vdc Operating DC Input Voltage 180 580Vdc 260 580Vdc Range Start up DC Input Voltage 300V 100W Power Nominal DC Input Voltage 400Vdc 500Vdc Number of MPP Trackers 2 MPPT Voltage Range 300 540Vdc 300 550Vdc Max Input Current Imp 50A 25A per MPPT 70A 35A per MPP
45. x8 5in 544x1058x215mm Weight 141lbs 64kg 70 Safety UL1741 2010 CSA C22 2 NO 107 1 01 IEEE1547 FCC PART15 Grid Standard IEEE1547 2003 IEEE1547 1 2005 Safety and EMC Standard Note The output power of CPS SC20KTL DO US 480 amp CPS SC14KTL DO US 208 inverter de rates when the DC voltage of is lower than 300V See Figure 6 1 300V 21kW 550 18 2kW 80 260 300 550 600 PV Voltage V Figure 6 1 a DC voltage de rating curve for CPS SC20KTL DO US 480 Po Pn 100 80 60 40 20 PV Voltage V Figure 6 1 b DC voltage de rating curve for CPS SC14KTL DO US 208 71 G Note The output power of CPS SC20KTL DO US 480 amp SC14KTL DO inverter de rates when the environmental temperature is higher than 122 F 50 C See Figure 6 2 A Po Pn 100 80 N 60 i 40 20 1227 140 F 50 C 60 C Tamb Figure 6 2 Environmental temperature de rating curve Notes When the altitude is higher than 6562ft 2000m the power of CPS SC20KTL DO US 480 amp SC14KTL DO US 208 inverter needs derating see Figure 6 3 70 dn 6562ft 13123ft 2000m 4000m Figure 6 3 Derating curve with high altitude 72 Chapter 8 Limited Warranty The warranty policy of this product is specified in the contract otherwise the warranty period is 5 years For service Chint Power Systems America will provide local s
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