Chint Power CPS SCA20KTL-DO Installation And Operation Manual Download Page 5

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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.

Thank you for choosing this Grid-tied PV Inverter. This PV Inverter is a highly

reliable product due to its innovative design and high quality control. Such an

Inverter is used in high demand, grid-tied PV systems.

If you encounter any problems during installation or operation of this unit, first

check the user manual before contacting your local dealer or supplier. This

user manual is applicable for the following 2 models: CPS SCA20KTL-DO and

CPS SCA25KTL-DO.

Instructions inside this user manual will help you solve most installation and

operation difficulties. Contact your local supplier if the problem still exists.

Please keep this user manual on hand for quick reference.

Summary of Contents for CPS SCA20KTL-DO

Page 1: ...CPS SCA Series Grid tied PV Inverter CPS SCA20 25KTL DO Installation and Operation Manual Ver 1 0 ...

Page 2: ...otline 86 21 37791222 6300 Address Building 4 No 3255 Sixian Road Songjiang District Shanghai China Zip Code 201614 SHANGHAI CHINT POWER SYSTEMS CO LTD All rights reserved Specifications and designs included in this manual are subject to change without notice CHINT POWER 2013 11 MKT PN 9 0020 0111A0 ...

Page 3: ...equirements 12 3 2 Mechanical installation 14 3 3 Electrical installation 24 3 3 1 DC connection 27 3 3 2 AC and ground connection 33 3 3 3 Communication connection 38 Chapter 4 Commissioning 53 4 1 Commissioning Checklist 53 4 1 1 Mechanical installation 53 4 1 2 Cable connections 53 4 1 3 Electrical check 53 4 2 Commissioning steps 53 Chapter 5 User Interface 56 5 1 Description of LCD panel 56 5...

Page 4: ...ation 84 7 1 Fault shut down and troubleshooting 84 7 1 1 LED fault and troubleshooting 84 7 1 2 LCD fault and troubleshooting 84 7 2 Product maintenance 92 7 2 1 Check the electrical connection 92 7 2 2 Clean the air vent filter 92 7 2 3 Replace cooling fans 92 7 2 4 Replace the inverter 95 7 3 De installing the inverter 97 Chapter 8 Technical Data 98 Chapter 9 Quality Assurance 102 9 1 Warranty ...

Page 5: ...uch an Inverter is used in high demand grid tied PV systems If you encounter any problems during installation or operation of this unit first check the user manual before contacting your local dealer or supplier This user manual is applicable for the following 2 models CPS SCA20KTL DO and CPS SCA25KTL DO Instructions inside this user manual will help you solve most installation and operation diffi...

Page 6: ...tion 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 p...

Page 7: ...es during or shortly after operation HAZARD ENERGY Caution risk of electric shock energy storage timed discharge 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 RoHS MARK The inverter is complied with DIRECTIVE 2011 65 EU on the restriction of the use of certain haz...

Page 8: ...fter disconnecting all sources from DC and AC sides 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 NOTICE Do not install the inverter under direct sunlight to avoid conversion efficiency de rating caused by excessively high temperature CAUTION CPS SCA20 25KTL DO series inverter i...

Page 9: ... the electricity supply company may cancel the operation license Putting the inverter into operation before the overall system complies with the national rules and safety regulation of the application is not permitted ...

Page 10: ...s and the surplus power is supplied to the electricity grid DC power distribution equipments AC Grid Bidirectional electric meter AC power distribution equipments Figure 2 1 Grid tied PV system 2 2 Product features High conversion efficiency Advanced 3 level conversion technology Max efficiency 98 3 Euro efficiency 97 8 Strong grid adaptability 7 grid standards applicable LVRT Reactive power adjus...

Page 11: ...ng of DC injection from AC output Anti islanding protection Input and output over voltage protection Input over current protection Environmental temperature monitoring Module temperature monitoring 2 4 Circuit structure design The basic schematic diagram of CPS SCA20 25KTL DO series inverter is shown in Figure 2 2 The input of PV modules passes through surge protection circuitry DC EMI wave filter...

Page 12: ...MPPT1 MPPT2 PV1 PV1 PV2 PV2 AC Output PV Input FUSE Clip No FUSE PV2 PV2 PV2 PV2 PV2 PV2 PV2 PV2 PE Figure 2 2 Schematic diagram of CPS SCA20 25KTL DO series inverter 2 5 Appearance Description 5 2 1 6 7 8 3 4 4 Figure 2 3 Appearance sketch of CPS SCA20 25KTL DO series inverter ...

Page 13: ...n items of the inverter 1 Main housing of the inverter 2 Wiring box of the inverter 3 Mounting bracket 4 External cooling fans 5 LED indication lights 6 LCD display 7 Key buttons 8 DC switch DC power on off ...

Page 14: ...e 3 1 Main items No Item Q ty Note 1 Main housing of the PV inverter 1 2 Wiring box of the PV inverter 1 3 Mounting bracket 1 Upon which inverter is hung and mounted onto a wall 4 User manual 1 Installation and operation manual 5 Warranty card 1 For maintenance and repair 6 Packing list 1 7 Accessory kit 1 Contains all necessary accessories The 7 Accessory kit contains items listed below Table 3 2...

Page 15: ...ye nut M10 2 For lifting the main housing 7 DC input connector 16 8 positive and 8 negative connectors 8 Unlock tool for DC connector 1 To unlock DC input connectors 9 OT type terminal 2 For ground connection 10 Pre insulated end ferrule 8 For AC output cables and PE cable 2 spare parts 11 RJ45 connecter 4 For RS485 or Ethernet communication 2 spare parts 12 Jumper busbar 1 For parallel mode cable...

Page 16: ...f Type B is allowed to install on the AC side of the inverter if an external RCMU is needed by customer Make sure that the power grid voltage is within normal range Permission of grid connection has been granted by the local electricity supply authority Installation personnel must be qualified electricians or people who have received professional training Sufficient convection space to prevent ove...

Page 17: ...g device above the inverter Do not install the inverter near the electromagnetic source which can compromise the normal operation of electronic equipment No ice or snow on the inverter Figure 3 1 Sketch of installation environment ...

Page 18: ...14 3 2 Mechanical installation 1 Dimensions Figure 3 2 Dimensions of CPS SCA20 25KTL DO series inverter ...

Page 19: ... a If the location permits install the inverter vertically b If the inverter cannot be mounted vertically it may be tilted backward by no lower than 15 degree from horizontal c Do NOT mount the inverter leaning forward d Do NOT mount the inverter in a horizontal position 15 degrees e Do NOT mount the inverter upside down a b c d e Figure 3 3 Mount the inverter correctly ...

Page 20: ...1 8in 500mm 19 7in 1000mm 39 4in 600mm 23 6in Figure 3 4 Inverter mounting dimensions 5 Mount the inverter onto the bracket 1 Mark the 8 holes on the bearing surface for mounting the bracket as shown in Figure 3 5 NOTICE The spacing between two inverters in parallel should be 1000mm 39 4 inches Ensure that the air space around the inverter is well ventilated ...

Page 21: ...bearing surface 2 Drill holes at the marked positions with a 10mm drill and put the M8 expansion tubes into the holes Fasten the mounting bracket with the M8x25 assembling bolts in the accessory kit Tool Electric drill Ф10mm head No 13 wrench ...

Page 22: ...ed through both lifting eye nuts to lift the inverter onto the bracket The minimum angle between the two sling ropes should be less than 90 degrees Manual mounting Two people grab the handle positions marked in the Figure 3 8 and mount the inverter onto the bracket CAUTION The main housing of the CPS SCA20 25KTL DO series inverter is about 46 5kg 102 5 pounds Please ensure the mounting is properly...

Page 23: ...19 Figure 3 7 Mount the main housing on the bracket by lifting Figure 3 8 Position of grab handle 2 people to mount the inverter due to the weight of the equipment ...

Page 24: ...ps head screwdriver Figure 3 9 Cover plate of the main housing Remove the cover board at the top of the wiring box see Figure 3 10 Figure 3 10 Cover board of the wiring box Save the cover board and screws and fix the board on the left side of the wiring box after the wiring box is attached to the inverter housing see ...

Page 25: ...value of 2 8N m Figure 3 11 Installation of the wiring box 5 Attach the main housing and the wiring box to the mounting bracket with the M5x10 bolts 6 pcs see Figure 3 12 Tool No 2 Phillips head screwdriver torque value of 1 6N m CAUTION The total weight of the CPS SCA20 25KTL DO series inverter is about 55kg 122 pounds Please ensure the mounting is properly installed before hanging the the invert...

Page 26: ...left side of the wiring box see Figure 3 13 Tool No 2 Phillips head screwdriver torque value of 1 2N m Figure 3 13 Attach the cover board to the left side of the wiring box 7 Optional Install an anti theft padlock when the installation is complete The anti theft padlock is used to prevent the inverter from being stolen ...

Page 27: ...e bracket as shown in Figure 3 14 Figure 3 14 Location of the anti theft padlock The anti theft padlock should meet the requirement of the dimensions shown in Figure 3 15 B C A Figure 3 15 The dimensions of anti theft padlock Recommended lock size A Ф3 6mm B 20 50mm C 20 50mm ...

Page 28: ...t under load 负载状态下请勿断开连接 DC INPUT 1 直流输入 1 DC INPUT 2 直流输入 2 AC OUTPUT 交流输出 COMM PORT 通信接口 ANT 天线 1 2 3 4 5 1 Figure 3 16 External connection interface L3 L2 N L1 L3 L2 N L1 6 Communication board 1011 7 Figure 3 17 Internal connection interface 1 DC input connectors type MC4 2 AC output waterproof cable gland 3 External ground connection point 4 Communication port Standard RS485 Optional Zigbee a...

Page 29: ... RJ45 connector 11 RS485 communication interface RJ45 connector 12 RS485 communication interface 5 pin connector 13 Enable Disable selector switch of RS485 communication terminal resistance 14 Selector switch for independent or parallel mode of PV connection Figure 3 18 Optional communication card 15 Zigbee communication card optional 16 Ethernet communication card optional Choose the cables for i...

Page 30: ...cable outer diameter 21 26mm PE 1X6 10mm 2 cable for external grounding point Recommend ed cable for L1 L2 L3 N 4X10mm 2 H07RN F Recommend ed cable for PE 1X10mm 2 Dry coantact 3x0 2 0 75mm 2 communication cable with outer diameter of 4 5 6mm RS485 communication UTP CAT 5e or 3x0 2 0 75mm 2 communication cable with outer diameter of 4 5 6mm 1200 Ethernet communication UTP CAT 5e communication cabl...

Page 31: ...put 2 Inverter n1 n2 n3 n4 DC Input 1 DC Input 2 Inverter n1 n2 n3 n4 n1 n2 n3 n4 Figure 3 19 a Parallel mode Figure 3 19 b Independent mode Table 3 4 DC input power specification Inverter model Max DC input power Rated DC input power of each input section SCA20KTL DO 21KW 10 5KW SCA25KTL DO 26KW 13KW Remarks The standard configuration is independent mode If it needs to switch to the Parallel mode...

Page 32: ...cessory kit on the J9 J10 terminal blocks and tighten the wire terminals back on the terminal blocks with a torque value of 1 2N m Figure 3 20 Internal configuration of parallel mode 4 Set the selector switch on the LCD board see Figure 3 21 to parallel mode Communication board PAR IND S401 ...

Page 33: ...ax Voc of each PV string 3 In order to keep the output power normal the rated current of fuse is generally larger than the 1 5 Max output current from the PV strings 4 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 pow...

Page 34: ...efore plugging the DC connectors with the cables of PV strings according to the following steps i Use a multi meter to measure the PV strings cable ends and check the polarity ii The positive terminal of cable should match the positive terminal of inverter s DC input iii The negative terminal of cable should match the negative terminal of inverter s DC input WARNING DC fuses should be replaced by ...

Page 35: ...nals for DC cables No Item Function 1 For Positive DC cable 2 For Negative DC cable e Insert the crimped positive and negative terminals into the male and female housing respectively and then tighten the seal glands as shown in Figure 3 23 and Figure 3 24 NOTICE It is required to use the attached or the same type of DC input connectors Otherwise poor contact may happen causing problem of normal us...

Page 36: ...o 3 3 2 for detailed information of ground connection 2 Turn off the DC switch f Plug the assembled DC cable connectors with the positive and negative connectors on the inverter side respectively as shown in Figure 3 25 Figure 3 25 Plug DC cable connectors If the input connector needs to be unlocked put the unlock tool for DC connector into the slot on the connector and unlock the connector by pre...

Page 37: ...wing describes how to connect the AC output cables and PE cable between the inverter and the AC grid 1 Use the 3mm Hex screwdriver to screw off the 4 screws on the wiring box and take off the cover see Figure 3 28 Figure 3 28 Take off the cover of the wiring box 2 The inverter supports 3 kinds of cable connection on the AC side ...

Page 38: ...e value AC output terminal block 1 2 N m Internal grounding bar 1 6 N m Internal grounding stud 1 6 N m External grounding point 1 6 N m Connect Neutral L1 L2 L3 and PE cables to the corresponding terminals as shown in figure 3 29 L3 L2 N L1 L3 L2 N L1 L3 L2 N L1 L3 L2 N L1 WARNING High touch current Earth connection essential before connecting supply 警告大接触电流在接通电源前必须先接地 AC OUTPUT 交流输出 COMM PORT ...

Page 39: ...lock and use the OT type terminal to connect the PE cable to the internal grounding stud inside the wiring box see the 2 nd graph in Figure 3 29 Set up the cables referring to Figure 3 31 Pre insulated end ferrule 4pcs Pre insulated end ferrule Core wire OT type terminal Core wire OT type terminal 1pcs Figure 3 31 Connect the PE cable to the internal grounding stud 3 Connect the AC L1 L2 L3 N cabl...

Page 40: ... box see the 3 rd graph in Figure 3 29 Set up the cables referring to Figure 3 32 Pre insulated end ferrule 4pcs Pre insulated end ferrule Core wire OT type terminal 2pcs Ground wire Figure 3 32 Connect the PE cable to the external grounding point ...

Page 41: ...C grid Please choose the AC breaker referring to Table 3 9 Table 3 9 Specification of AC breaker selection Inverter AC breaker rated current A CPS SCA20KTL DO 50 CPS SCA25KTL DO 64 INSTRUCTION The attached pre insulated end ferrules match with the 10 mm 2 cables If the cable of other gauge is selected different pre insulated end ferrule is needed and provided by the installers ...

Page 42: ...thernet and ZigBee RS485 is the standard communication the Ethernet and ZigBee cards are optional for users Each communication method supports firmware upgrade by USB disk 1 Communication board description Communication board 3 4 PAR IND S401 S402 ON OFF P205 P207 P203 P204 P208 Figure 3 33 Communication board ...

Page 43: ...N O N C COM Please see the section after the table for detailed information USB port P207 Firmware upgrade via USB disk RS485 port RJ45 connector P203 P204 No Colour Function 1 White orange 485 2 Orange N C 3 White green 485 4 Blue N C 5 White blue N C 6 Green N C 7 White brown COM 8 Brown N C RS485 port 5pin connector P208 1 NC 2 NC 3 RS485 4 RS485 5 COM ...

Page 44: ...ctor switch for setting the PV connection mode S401 1 Independent mode 2 Parallel mode Zigbee card Optional The ZigBee card supports wireless network communication The communication frequency is optional from 2 405GHz 2 480GHz and the visible communication distance reaches up to 2000 metres The factory default configuration of ZigBeeCard is transit route mode The ...

Page 45: ...xe software Use the Web Page function embedded in the Ethernet card to input the effective IP address in the IE address bar such as 192 168 1 100 Input the user name and password Default user name admin password admin then set up the internet parameters and check the real time information of inverter etc Set the baud rate to 9600pbs through LCD operations when installing the Ethernet card Dry cont...

Page 46: ... V Maximum 1 A Different modes of dry contact output can be accessed by connecting different pins of the P205 connector as shown in following table Table 3 11 Working modes of dry contact Dry contact communication port Status in fault condition Status without fault condition P205 N O COM Closed Open P205 N C COM Open Closed Connection Plan You can connect a LED or other loads to indicate the opera...

Page 47: ...dry contact and the power distribution grid Dry contact communication cable connection a Screw off the nut of the communication cable gland and take out one of the seal pins COM N C N O COM N C N O COM N C N O Light on in trouble free operational Light on in error Line circuit Breaker 3 A or L N COM N C N O COM N C N O COM N C N O Line circuit Breaker 3 A or L N Fault In operation In operation ...

Page 48: ...the cable gland and inside the wiring box c Use double layer insulated cables Strip the cables according to the following requirements Tool Wire stripping pliers Figure 3 38 Wire stripping Table 3 12 Cable set up Position Description Value Cable type Double layer insulated cable D A L1 L2 ...

Page 49: ...gth of stripped inner wire skin Maximum 7 mm d Connect wires to the terminal Tool 2 or 2 5mm flat screwdriver Figure 3 39 Wire connection e Plug the cable terminal into the P205 connector f Tighten the nut of the cable gland Figure 3 40 The dry contact communication cable connection No Cable Color Function 1 Red N O 2 Blue N C 3 Green COM ...

Page 50: ...ication RJ45 connector 3 Cable connection of RS485 communication 5 pin connector 4 Cable connection of RS485 network communication 5 pin connector a Screw off the nut of the communication cable gland and take out the seal pin as shown in Figure 3 42 Remarks 1 Take out 1 seal pin for RS485 communication of single inverter 2 Take out 2 seal pins for RS485 network communication ...

Page 51: ...ure 3 43 3 44 Tools Wire stripping pliers crimping pliers for RJ45 connector Wire stripping pliers 2 or 2 5mm flat screwdriver for 5 pin connector Figure 3 43 Crimp RJ45 connector on the RS485 and Ethernet cable No Colour Function 1 White orange 485 2 Orange N C 3 White green 485 4 Blue N C 5 White blue N C 6 Green N C 7 White brown COM 8 Brown N C ...

Page 52: ...rter 2 RS485 network communication Figure 3 44 Fasten the cable terminal on the RS485 5 pin connector c Plug the cable terminal into the corresponding connector d Tighten the nut of the cable gland 1 NC 2 NC 3 Red RS485 4 Blue RS485 5 Green COM ...

Page 53: ...485 network connection as shown in Figure 3 45 Other communication topologies such as the star networks are not recommendaed 1 2 N Datalogger S402 OFF S402 OFF S402 ON Figure 3 45 R485 network connection If there are multiple inverters in the RS485 networking the selector switch S402 of the last inverter in the daisy chain should be in ON position to have the 120ohm terminal resistor enabled while...

Page 54: ...50 Ethernet communication cable connection Figure 3 46 Ethernet cable connection a Screw off the nut of the communication cable gland and take out one of the seal pins Figure 3 47 Take out the seal pin ...

Page 55: ...of the cable gland take off the waterproof rubber plug and cut off one of the hole of the rubber plug Tool Utility knife b Put the antenna cable through the rubber plug and assemble the waterproof cable gland in sequence Tighten the nut at the end of the cable gland c Screw off the plastic plug beside the communication cable gland Tool 4mm flat screwdriver d Screw on the waterproof cable gland in ...

Page 56: ...52 Figure 3 48 The ZigBee cable connection a b c d e ...

Page 57: ...h should be on OFF position Please refer to 3 3 Electrical installation 4 1 3 Electrical check Make sure that the AC circuit breaker is appropriately sized Test whether the AC voltage is within the normal operating range Make sure the DC open circuit voltage of input strings is less than 1000V 4 2 Commissioning steps Complete the checklist above before commissioning the inverter as follows 1 Turn ...

Page 58: ...he standard selection interface as shown in Figure 4 2 Select the corresponding grid standard and press ENTER Set Standard Figure 4 1 Set up grid standard INSTRUCTION Please check with your local electricity supply company before selecting the grid standard If the inverter is operated with a wrong grid standard the electricity supply company may cancel the operation license Putting the inverter in...

Page 59: ...gure 4 3 Normal operation status 6 If the inverter fails to operate normally FAULT light will light up and the fault information will show on the LCD screen Please refer to 7 1 2 Troubleshoot LCD faults 7 Set up system time and language Set up the system time and language according to 5 4 4 System configuration 8 To check the real time operation information you can refer to 5 4 1 Operation informa...

Page 60: ... POWER RUN GRID FAULT 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 POWER Working power light Light on Energized control panel starts to work Light off Power supply not working RUN Grid tied Light In grid tied power generation state ...

Page 61: ...upply not working FAULT Fault status indication light Light on Indicates a Fault Slow flash Indicates Alarm light up 0 5s light off 2s Fast flash Protective action light up 0 5s light off 0 5s Light off No fault or power supply not working Table 5 2 Definition of the keys Key Description Definition of function Escape key Back end mute Enter key Confirm entering the menu confirm set value Switch to...

Page 62: ...ower into the grid GRID will light up when the grid is normal during the operation of the inverter Otherwise GRID will blink until the grid restores to normal FAULT will blink quickly as a fault except grid fault occurs FAULT will not light out until the fault is eliminated The light will blink slowly when an alarm occurs FAULT remains illuminated when an internal fault occurs The buzzer will give...

Page 63: ... mode Sys Checking Figure 5 3 Inverter system check ongoing Standby Figure 5 4 Inverter system in standby mode a b Figure 5 5 Default display interface for normal operation 625 V 18 5A 231 23 1 223 2 PV1 08 12 13 10 05 622 V 19 3A 231 23 1 223 2 PV2 08 12 13 10 10 ...

Page 64: ... 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 4 Menu functions LCD screen displays default indication interface when the inverter is in operation mode P...

Page 65: ...1 Operation information When the cursor moves to 1 OP Info in the main screen you should press ENT to select the operation information as shown in Figure 5 8 Check the information by pressing UP and DOWN Return to the previous menu by pressing ESC 1 OP Info EDay 23 5kWh PDayPk 19kW DayT 12 1 h Uab 400 2V Ubc 400 9V Uca 399 7V Freq 50 0Hz Ia 13 9A Ib 14 1A Ic 13 1A Tmod 78 2C Tamb 50 C Upv 1 360 0V...

Page 66: ...corresponding fault messages will be indicated in 2 Alarm menu in addition to the sound and light alarms Move the cursor to 2 Alarm and press ENT to check out the specific fault information as shown in Figure 5 10 2 Alarm No Alarm EepromErr Protect0010 No Yes Figure 5 10 Alarm failure information 5 4 3 History Move the cursor to 3 History in the main interface Press ENT to check the history inform...

Page 67: ...date is December 15th the LCD will indicate the operation information of 21 days before that date which is November 24th 3 The DSP version LCD version and serial number of the product are listed in 3 Version menu 4 Cumulative generated power from the first day the inverter began working is available to be checked in 4 TotalTag menu 3 History 1 HistErr 2 OP Recd 3 Version 4 TotalTag NoError 1 St201...

Page 68: ...erCmd and 7 NetConfig 1 ON OFF 2 Language 3 Buzzer 4 SysTime 2009 12 15 21 14 中文 English EnglishVer 5 Commun 6 OtherCmd 7 NetConfig ARCOption ARCFaultClear DHCP Enable Disable StaticIP IPAddr 10 122 1 123 SubMask 255 255 255 0 GateWay 10 122 1 254 DNSSer 10 122 0 1 MPPTOption MPPTCycle Min MPPTScan 4 Setting ON OFF ON State KeyBeep Enabled AlarmBeep Disabled Francaise Deutsch EnglishVer Italiano E...

Page 69: ...e by pressing UP and DOWN if the cursor is on the Key beep Complete the setup by pressing ENT Similarly the Alarm beep can be set up in the same way 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 5 Set the 485 communication parameters with 5 Commun menu 6 There are 5 submenus in the 6 MPPTScan menu 1 ARCOpti...

Page 70: ...nterface if the scanning fails 7 Configure the network address in the 7 NetConfig menu Move the cursor to the menu press ENT and set up the parameters by UP and DOWN 5 4 5 Power dispatch Move the cursor to 5 Dispatch in the main interface and press ENT to go to the following interface Figure 5 13 5 Dispatch ActivePower 100 0 PowerFactor 1 000 Figure 5 13 Active Power and PowerFactor Remote power d...

Page 71: ...d 8 FMinTest2 Take the 1 VMaxTest1 for example When you select this submenu and press ENT VMaxTest1 Start will appear on the LCD screen for your confirmation You can press ESC to cancel the test If press ENT again you will see Testing on the LCD screen When the test is complete the test result will be reported on the screen Then press ESC to go back to the 8 submenus for other tests with the same ...

Page 72: ...Test1 Start Testing Fmax1 Hz Freq1 Hz Foff1 Hz Toff mS VMinTest1 Start Testing UacMin1 V Uac1 V Uacoff1 V Toff mS VMaxTest1 Start Testing UacMax1 V Uac1 V Uacoff1 V Toff mS Inverter is NOT Running Select VolMax1Test Select FreqMin1Test Select FreqMax1Test Select VolMin1Test 5 Dispatch 6 Autotest 5 VMaxTest2 6 VMinTest2 7 FMaxTest2 8 FMinTest2 Figure 5 14 Autotest menu and submenus ...

Page 73: ... Success Failure Are You Sure Restarting Success Failure Failure FaultOperated FaultOperated ClearErrors Success 5 StdSet 1 VDE0126 1 1 2 VDE4105 3 G59 4 C10_11 1 GridVProtect 2 GridFProtect 3 ON OFF 4 PowerContr 5 LVRTSet 6 OtherProtect 5 CEI_021 6 IEEE1547 7 BDEW Figure 5 15 System protection parameter configuration 1 The system protection parameters of each grid standard can be set up in 1 SysP...

Page 74: ...roubleshooting 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 alarm interface will be indicated NOTICE Please don t change the grid standard when the inverter is in normal operation mode or the change is invalid Please refer to the 6 2 Manual shutdo...

Page 75: ... value of Level 1 Max grid voltage 200 0 440 0 533 0 VMaxTripT1 S Threshold value of Level 1 Max grid trip voltage 0 600 00 600 00 GridV Min1 V Threshold value of Level 1 Min grid voltage 0 360 0 480 0 VMinTripT1 S Threshold value of Level 1 Min grid trip voltage 0 600 00 600 00 GridV Max2 V Threshold value of Level 2 Max grid voltage 200 0 460 0 624 0 VMaxTripT2 S Threshold value of Level 2 Max g...

Page 76: ...z Protection threshold value of Level 1 Min grid frequency 45 00 47 5 60 00 FminTripT1 S Trip time of Level 1 Min grid frequency 0 0 10 600 00 GridF Max2 Hz Protection threshold value of Level 2 Max grid frequency 50 00 51 50 65 00 FmaxTripT2 S Trip time of Level 2 Max grid frequency 0 0 10 600 00 GridF Min2 Hz Protection threshold value of Level 2 Min grid frequency 45 00 47 50 60 00 FminTripT2 S...

Page 77: ...age 300 0 330 0 400 0 SoftStep KW S Soft step 0 01 1 00 2 00 SoftOffOption Soft turn off option Ban Ban Enable OffPStep KW S Turn off power step 0 01 1 50 2 00 IsoResis KOhm Isolation resistance 10 0 40 0 1000 0 GridReStep KW S Grid fault recovery step 0 01 0 04 2 00 3 4 PowerContr menu relative functions of active reactive power control and over frequency derating including ActiveContr RePowerCon...

Page 78: ...mote software if the Dispatch is selected 3 QReactSet Set the Q value Note Change the reactive power by adjusting the Q value reactive compensation 4 PF Set Set the PF value Note Change the reactive power by adjusting the PowerFactor 5 PF P Curve PF curve mode Note The power factor changes according to the power change as shown in Figure 5 17 INSTRUCTION The PF P Curve function is only available f...

Page 79: ...urve mode Note The reactive compensation changes according to the grid voltage change as shown in Figure 5 18 Q QuCurveU1 QuCurveQ1 QuCurveU3 QuCurveQ3 QuCurveU2 QuCurveQ2 QuCurveU4 QuCurveQ4 Inductive Capacitive Figure 5 18 Q U curve mode INSTRUCTION The Q U curve function is only available for CEI 0 21 grid standard ...

Page 80: ...F P PFCurveP1 0 50 100 See Figure 5 17 PFCurvePF1 1 000 1 000 1 000 See Figure 5 17 PFCurveP2 0 100 100 See Figure 5 17 PFCurvePF2 1 000 0 900 1 000 See Figure 5 17 PFCurvTripV V 358 5 398 3 438 2 PF curve trip voltage PFCurveReV V 0 358 5 438 2 PF curve revocation voltage Q U QuCurveU1 V 430 2 430 2 440 0 See Figure 5 18 QuCurveQ1 100 0 0 0 100 0 See Figure 5 18 QuCurveU2 V 430 0 438 2 440 0 See ...

Page 81: ...qDeratSet Over frequency derating setting Ban Enable1 Enable2 GridOFDerat1 Hz Derating frequency 1 50 00 50 20 65 00 DeratRatio Hz Derating ratio 0 40 0 100 0 DePowStep KW S Derating power recovery step 0 01 0 03 2 00 CPS SCA20KTL 0 01 0 04 2 00 CPS SCA25KTL GridOFDerat3 Hz Derating recovery frequency3 49 00 50 00 61 00 GridOFDeT3 S Derating frequency recovery time 0 300 00 600 00 When the grid st...

Page 82: ...0 and the default value is 51 50 When the grid standard is CEI 0 21 the setting range of trip frequency of over frequency derating is 50 00Hz 51 50Hz and the default value is 50 30Hz The range of over frequency derating end frequency is 50 00Hz 51 50Hz and the default value is 51 50Hz 100 P GridOFDerat1 GridOFDerat2 Freq Hz Figure 5 20 Over frequency derating curve CEI 0 21 4 5 LVRTSet menu set up...

Page 83: ...e current K 0 1 5 100 LVRTNegCurrK LVRT negative current K 0 2 0 100 5 6 OtherProtect menu set up the threshold value of leakage current and output DC component protection Table 5 9 Protection parameters of leakage current and output DC component Parameter name Description Setup range lower limit default upper limit LeakCurMax mA Leakage current Max limit 0 250 300 IdcMax mA DC component current M...

Page 84: ...mbient temperature is within allowable operating range 6 2 Shut down Manual shutdown Normally it is not necessary to shutdown the inverter but it can be shut down manually if regulation setting or maintenance is required Move the cursor from the main operation interface to 4 Setting Press ENT and go to submenu 1 ON OFF Move the cursor to OFF and press ENT and then the inverter will be shut down Au...

Page 85: ...he inverter converts the power generated by PV modules to AC continuously and feeds into the power grid 3 Standby mode as shown in Figure 6 3 The inverter will enter 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 value The inverter will check automatically whether it meets the startup conditions i...

Page 86: ... 6 4 Fault indication interface 6 4 Grid tied power generation CPS SCA20 25KTL DO series inverter has an automatic grid tied power generation process It will check constantly whether AC power grid meets the conditions for grid tied power generation and also test whether the PV array WARNING All the installation and wiring connections should be performed by qualified technical personnel Disconnect ...

Page 87: ...ray output in maximum power point tracking MPPT mode In case of any abnormity the inverter will enter the protection program immediately In low light conditions when power generation is not enough to keep the inverter in operation the inverter will enter standby mode When the voltage of PV array changes and becomes stable and higher than the required set value the inverter will attempt to start gr...

Page 88: ...n lights up 1 Turn off the external AC breaker 2 Switch the DC switch to OFF position 3 Check the PV input voltage and polarity The GRID LED is blinking 1 Turn off the external AC breaker 2 Switch the DC switch to OFF position 3 Check whether the grid voltage is normal and whether the cable connection of AC side is correct and secure The RUN LED lights off or FAULT LED lights up Refer to Table 7 2...

Page 89: ...after sales service There are 3 types of fault alarm protection and hardware fault Table 7 2 LCD Troubleshooting table Alarm 1 TempSensorErr 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 r...

Page 90: ... Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Check for foreign objects on fan blades 3 Switch off 3 phase work power supply and then reboot the system 4 Contact after sales service personnel 4 EepromErr Definition Internal alarm Possible causes Internal memory has a problem Recommended solutions 1 Observe for 5 minutes and see whether ...

Page 91: ...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 2 GridV OutLim Definition 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 solut...

Page 92: ... 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 inverter and power grid is disconnected or has any fault 4 Contact after sales service personnel 4 PVVoltOver Definition PV voltage exceeds the specified value Possible causes PV over voltage Recommended solutions 1 Observe for 3...

Page 93: ...nnel 6 GFCI Err Definition System leakage current is too high Possible causes 1 Excessive parasitic capacitance on PV module due to environmental factor 2 Grounding is abnormal 3 Internal inverter fault Recommended solutions 1 Observe for 5 minutes and see whether the alarm will be eliminated automatically 2 Detect whether the electrical connection is abnormal 3 Contact after sales service personn...

Page 94: ...FaultClear to clear the ARC fault Refer to section 5 4 4 2 Check if there is an arc in PV input or the connection of PV cable is not good 2 Contact after sales service personnel 9 Arcboard Err Definition Arcboard error Possible causes Poor contact or damage of Arcboard Recommended solutions 1 Check whether the Arcboard is in good condition 2 Use ARCFaultClear to clear the ARC fault Refer to sectio...

Page 95: ...orced 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 DANGER Please disconnect the inverter from AC grid and PV modules before opening the equipment Make sure hazardous h...

Page 96: ...re it is not blocked and clean the vent with soft brush or vacuum cleaner if necessary 7 2 3 Replace cooling fans If the internal temperature of the inverter is too high or abnormal noise is heard assuming the air vent is not blocked and is clean it may be necessary to replace the external fans Please refer to Figure 7 1 for replacing the cooling fans 1 Use a No 2 Phillips head screwdriver to take...

Page 97: ...93 1 5 2 4 3 ...

Page 98: ...94 Figure 7 1 Replace cooling fans 50 60mm mm 50 60mm mm 6 ...

Page 99: ...DC switch of the inverter is turned to OFF position Then Replace the inverter according to the following steps a Unlock the padlock if it is installed on the inverter Figure 7 2 Unlock the padlock b Use a No 2 Phillips head screwdriver to unscrew the 2 screws on both sides of the inverter Figure 7 3 Remove the screws on both sides ...

Page 100: ...rom the wiring box Figure 7 4 Disconnect the main housing from the wiring box d Use a No 2 Phillips head screwdriver to remove the 2 screws on the left side of the wiring box and take off the cover board Put the board on the connector of wiring box Torque value 1 2N m Figure 7 4 Install the cover board on the connector of the wiring box ...

Page 101: ...re the AC output cable terminal voltage against the ground and make sure the voltage is 0V 6 Disconnect the AC and PE cables referring to 3 3 2 AC and ground connection 7 Disconnect the DC cables referring to 3 3 1 DC connection 8 Take out the communication card and disconnect the communication cables referring to 3 3 3 Communication connection 9 De install the inverter using reverse of installati...

Page 102: ...x 48A Max inverter backfeed current to the array 0 A Number of DC Inputs 4 stringsx2 DC Disconnection Type Integrated DC switch AC Output Rated AC Output Power 20kW 25kW Max AC Output Power 20kW 25kW Rated Output Voltage 400 230Vac Output Voltage Range 2 320 460Vac Grid Connection Type 3Φ N PE Max AC Output Current 32A 40A AC Inrush Current 99A Peak 203 4us 149A Peak 211us Maximum Output Fault Cur...

Page 103: ...5 Cooling Variable speed cooling fans Operating Temperature Range 25 C to 60 C derating from 45 C Operating Humidity 0 100 non condensing Operating Altitude 4000m derating from 2000m Display and Communication Display LCD LED Communication Standard RS485 Option Ethernet Zigbee Mechanical Data Dimensions WxHxD mm 600x1000x230 Weight kg 55 Safety Safety and EMC Standard LVD 2006 95 EC EMC 2004 108 EC...

Page 104: ...er begins derating as shown in Figure 8 1 20 40 60 80 100 PV Voltage V Po Pn 100 200 300 400 800 900 1000 Figure 8 1 SCA20 25KTL derating curve of PV input voltage Note 2 When the ambient temperature is higher than 45 the output power begins derating as shown in Figure 8 2 Po Pn Tamb 45 60 100 80 60 40 20 Figure 8 2 SCA20 25KTL derating curve with high temperature ...

Page 105: ...ude m Figure 8 3 SCA20 25KTL derating curve with high altitude Note 4 The inverter can output the AC power with full loads under 90 110 of the rated grid voltage When the grid voltage is lower than 90 the output current will be limited within the allowable Max current 20 40 60 80 100 Po Pn 0 9 Un 1 1 Un Figure 8 4 SCA20 25KTL derating curve of grid voltage ...

Page 106: ...er has been misused neglected or abused The Inverter has been used or stored in conditions beyond its electrical or environmental specifications The Inverter has been used for purposes other than for which it was designed The Inverter has been used beyond its stated specifications operating parameters and application Acts of third parties atmospheric discharges excess voltage chemical influences n...

Page 107: ...rranty clause 1 CPS will repair or replace with new products with malfunctions during the warranty period 2 The replaced non functioning products should be returned to CPS 3 Reasonable time should be provided to CPS for repair work Please do not hesitate to contact us if you have any questions regarding CPS SCA20 25KTL DO series grid tied PV inverter We are glad to provide the best service for you...

Page 108: ...osal instructions The Inverter must not be disposed of with the household waste Disposal of the PV Inverter at the end of its service life should be done in accordance with the disposal regulations for electronic waste which apply at the installation site at that time Note Please contact supplier or dealer for disposal options ...

Page 109: ...A 2 Optional accessory Item Number Note Antenna 1 Connect to Zigbee communication card Two hole cable gland 1 Waterproof cable gland Seal pin 1 Fixing bracket of antenna 1 Fix the antenna M4 X 10 Assembling screw 2 Install the bracket to fix the antenna The following figure shows the schematic diagram of CPS SCA20 25KTL DO inverter with optional components The inverter does NOT come with the fuses...

Page 110: ...ernet Optional FUSE Clip No FUSE LCD and Keys USB RS485 PV2 PV2 PV2 PV2 PV2 PV2 PV2 PV2 PE Figure A 1 Schematic diagram of CPS SCA20 25KTL DO with optional components The following figure shows the wiring box equipped with the optional components DC SPD Position of optional communication card Figure A 2 Internal structure of CPS SCA20 25KTL DO inverter with optional components ...

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