CPS 28KTL-DO Installation And Operation Manual Download Page 10

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removed with a wave filter. Then the 3-phase AC voltage is passed through

two-stage relays and EMI wave filter to produce high quality AC power.

Three level

inverter

PV1+
PV1+
PV1+
PV1+

PV1-
PV1-
PV1-
PV1-

Switch

MPPT1

MPPT2

PV1+

PV1-

PV2+
PV2-

Output

Input

FUSE Clip

( No FUSE)

PV2+
PV2+
PV2+
PV2+

PV2-
PV2-
PV2-
PV2-

AFD

Switch

Figure 2-2 Schematic diagram of CPS SCA23/28KTL-DO series inverter

2.5 Appearance Description

5 6 7

Figure 2-3 Appearance sketch of CPS SCA23/28KTL-DO series inverter

Summary of Contents for 28KTL-DO

Page 1: ...CPS SCA Series Grid tied PV Inverter CPS SCA23 28KTL DO US 480 Installation and Operation Manual Ver 1 2 ...

Page 2: ...nstallation 11 3 2 Mechanical installation 12 3 3 Electrical installation 22 3 3 1 DC connection 24 3 3 2 AC and ground connection 28 3 3 3 Communication connection 33 Chapter 4 Commissioning 42 4 1 Commissioning Checklist 42 4 1 1 Mechanical installation 42 4 1 2 Cable connections 42 4 1 3 Electrical check 42 4 2 Commissioning steps 42 Chapter 5 User Interface 45 5 1 Description of LCD panel 45 5...

Page 3: ...tion 69 Chapter 7 Maintenance and De installation 71 7 1 Fault shut down and troubleshooting 71 7 1 1 LED fault and troubleshooting 71 7 1 2 LCD fault and troubleshooting 71 7 2 Product maintenance 79 7 2 1 Check the electrical connection 79 7 2 2 Clean the air vent filter 79 7 2 3 Replace cooling fans 79 7 2 4 Replace the inverter 82 7 3 De installing the inverter 84 Chapter 8 Technical Data 85 C...

Page 4: ... for the North American Solar market 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 SCA23KTL DO US 480 and CPS SCA28KTL DO US 480 Instructions inside this user manual will help you solve most installation and operation difficulties C...

Page 5: ...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 6: ...hich must be securely connected to the earth through the PE protective earthing cable to ensure operational safety 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 DANGER Please disconnect the inverter from AC grid and PV modules bef...

Page 7: ...he mounting is properly installed before hanging the the inverter on the bracket 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 into operation before the overall system complies with the national rules an...

Page 8: ...o 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 4 CEC efficiency 98 Strong grid adaptability 7 grid standards applicable Reactive power adjustable PF value 0 8 Remote Curtailment Flexibl...

Page 9: ...against ground monitoring AC output voltage and frequency monitoring Leakage current against ground monitoring Monitoring 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 SCA23 28KTL DO US 4...

Page 10: ...vel inverter N L1 L2 L3 PV1 PV1 PV1 PV1 PV1 PV1 PV1 PV1 DC Switch MPPT1 MPPT2 PV1 PV1 PV2 PV2 AC Output PV Input FUSE Clip No FUSE PV2 PV2 PV2 PV2 PV2 PV2 PV2 PV2 AFD AC Switch Figure 2 2 Schematic diagram of CPS SCA23 28KTL DO series inverter 2 5 Appearance Description 1 2 3 4 4 5 6 7 8 9 Figure 2 3 Appearance sketch of CPS SCA23 28KTL DO series inverter ...

Page 11: ... 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 9 AC switch AC power on off ...

Page 12: ... 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 13: ...erminal 2 For ground connection 8 Pre insulated end ferrule for AC side 8 For AC output and ground cables 2 spare parts 9 Pre insulated end ferrule for DC side 20 For DC input cables 4 spare parts 10 RJ45 connecter 4 For RS485 or Ethernet communication 2 spare parts 11 Jumper busbar 1 For parallel mode cable connection positive pole 12 5 pin connector 1 For RS485 communication 13 3 pin connector 1...

Page 14: ...o connect to the grid Installation personnel must be qualified electricians or people who have received professional training Sufficient space is provided to allow the inverter cooling system to operate normally Install the inverter away from flammable and explosive substances Avoid installing the inverter in locations that exceed the temperature limits specified in the inverter data sheet to limi...

Page 15: ...12 3 2 Mechanical installation 1 Dimensions Figure 3 1 Dimensions of CPS SCA23 28KTL DO series inverter ...

Page 16: ... 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 degrees 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 2 Mount the inverter correctly ...

Page 17: ...n 500mm 19 7in 1000mm 39 4in 600mm 23 6in Figure 3 3 Inverter mounting dimensions 4 Mount the inverter onto the bracket 1 Mark the 8 holes on the bearing surface for mounting the bracket as shown in Figure 3 4 NOTICE The spacing between two adjacently mounted inverters should be 1000mm 39 4 inches Ensure that the air space around the inverter is well ventilated ...

Page 18: ...g surface 2 Drill holes at the marked positions with a 10mm 0 4in 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 0 4in head No 13 wrench ...

Page 19: ...rted 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 Figure 3 7 and mount the inverter onto the bracket CAUTION The main housing of the CPS SCA23 28KTL DO series inverter is about 46 5kg 102 5 pounds Please ensure the mounting is properly i...

Page 20: ...17 Figure 3 6 Mount the main housing on the bracket by lifting Figure 3 7 Position of grab handle 2 people to mount the inverter due to the weight of the equipment ...

Page 21: ...crewdriver Figure 3 8 Cover plate of the main housing Remove the cover board at the top of the wiring box see Figure 3 9 Figure 3 9 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 step 6 Figure 3 12 ...

Page 22: ...2 8N m Figure 3 10 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 11 Tool No 2 Phillips head screwdriver torque value of 1 6N m CAUTION The total weight of the CPS SCA23 28KTL DO series inverter is about 55kg 122 pounds Please ensure the mounting is properly installed before hanging the the inverter on the...

Page 23: ...g box on the bracket 6 Attach the cover board shown in Figure 3 10 to the left side of the wiring box see Figure 3 12 Tool No 2 Phillips head screwdriver torque value of 1 2N m Figure 3 12 Attach the cover board to the left side of the wiring box ...

Page 24: ...n when the equipment is installed outdoors You can lock the inverter on the bracket as shown in Figure 3 13 Figure 3 13 Location of the anti theft padlock The anti theft padlock should meet the requirement of the dimensions shown in Figure 3 14 B C A Figure 3 14 The dimensions of anti theft padlock Recommended lock size A Ф3 6mm B 20 50mm C 20 50mm ...

Page 25: ...rnal connection ports PV1 PV1 PV2 PV2 L1 L2 L3 N 6 6 6 6 7 8 Figure 3 16 Internal connection points 1 Knockout holes for DC input cable 1 1 4 or 1 2 Knockout hole for AC output cable 1 1 4 or 1 3 External ground connection point 4 Knockout hole for communication cable 3 4 5 Wireless communication antenna port For optional Zigbee communication 6 DC input terminal block 7 AC output terminal block 8 ...

Page 26: ...ration table Table 3 3 Cables specifications Position Cable Max cable length m DC input 12 10AWG PV cable 61 10AWG AC output L1 L2 L3 N PE Cable 10 6AWG 8AWG cable recommended 32 8AWG RS485 communication UTP CAT 5e or 3x 22 18AWG communication cable eg Belden 3106A 1200 ...

Page 27: ...n3 n4 n1 n2 n3 n4 Figure 3 17 a Parallel mode Figure 3 17 b Independent mode Table 3 4 DC input power specification Inverter model Max DC input power Rated DC input power of each input section SCA23KTL DO 24kW 12kW SCA28KTL DO 29kW 14 5kW Remarks The standard configuration is independent mode If it needs to switch to the Parallel mode please take the following steps to change the internal configur...

Page 28: ...e wire terminals back on the terminal blocks with a torque value of 1 2N m Figure 3 18 Internal configuration of parallel mode 4 Set the selector switch on the LCD board see Figure 3 19 to parallel mode Communication board PAR IND S401 ...

Page 29: ...x 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 powe...

Page 30: ...ings may differ for different applications c Check the polarity Figure 3 20 before 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 neg...

Page 31: ...t cables f Connect the crimped DC cables to the terminal block on the circuit board and fasten the screws as shown in Figure 3 22 Tools 4mm 0 16in flat screwdriver Torque value 1 2 N m PV1 PV1 PV2 PV2 L1 L2 L3 N Figure 3 22 Connection of DC input cables 3 3 2 AC and ground connection The following describes how to connect the AC output and ground cables between the inverter and the AC grid 1 Use t...

Page 32: ...er supports 3 kinds of cable connection on the AC side depending on the grouding connection method The cable set up procedures are illustrated below Table 3 6 Necessary tools for cable set up No Tools 1 4mm 0 16in flat screwdriver 2 8mm hex socket wrench 3 Diagonal pliers 4 Wire stripping pliers 5 Crimping pliers Table 3 7 Torque value AC output terminal block 1 2 N m Internal grounding bar 1 6 N ...

Page 33: ... the terminal block and the ground cable to the grounding bar see the 1 st graph in Figure 3 24 Set up the cables referring to Figure 3 25 Pre insulated end ferrule 5pcs Pre insulated end ferrule Core wire Figure 3 25 AC output and ground cable set up 2 Connect the AC L1 L2 L3 N cables to the terminal block and use the OT type terminal to connect the ground cable to the internal grounding stud ins...

Page 34: ...ock and use the OT type terminal to connect the ground cable to the external grounding point at the bottom of the wiring box see the 3 rd graph in Figure 3 24 Set up the cables referring to Figure 3 27 Pre insulated end ferrule 4pcs Pre insulated end ferrule Core wire OT type terminal 2pcs Ground wire Figure 3 27 AC output and ground cable set up INSTRUCTION The attached pre insulated end ferrules...

Page 35: ...when overcurrent happens Either 3 pole or 4 pole AC circuit breaker should be selected per the following specifications Table 3 8 Specification of AC breaker selection Inverter AC breaker rated current A CPS SCA23KTL DO 50 CPS SCA28KTL DO 64 cables If the cable of other gauge is selected different pre insulated end ferrule is needed and provided by the installers ...

Page 36: ...scription Communication board 3 4 PAR IND S401 S402 ON OFF P205 P207 P203 P204 P208 Figure 3 29 Communication board 2 Connectors and communication cards Item Picture Configuration description Dry contact communic ation port P205 N O N C COM Please see the section after the table for detailed information USB port P207 Firmware upgrade via USB disk ...

Page 37: ... 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 Selector switch for setting the 120Ω terminal resistor of the RS485 communic ation S402 1 Disable the termination resistance 2 Enable the terminal resistor ...

Page 38: ...t normally closed N C as shown below N O N C COM Figure 3 30 Dry contact communication port The voltage and current rating of the dry contact shown in the following table must not be exceeded in any case Table 3 9 Rating of dry contact Voltage Current AC Maximum 277 V Maximum 3 A DC Maximum 30 V Maximum 1 A Different modes of dry contact output can be accessed by connecting different pins of the P...

Page 39: ...tional status of the inverter as shown in the following figure Figure 3 31 Schematic diagram of dry contact communication If you connect the contact port to the power distribution grid you must 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 operat...

Page 40: ...cable conduit 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 32 Wire stripping Table 3 11 Cable set up Position Description Value Cable type Double layer insulated cable D Outer diameter 4 5 mm 6 mm A Cross section area of conductor 0 2 mm 0 75 mm L1 Length of stripped outer wire skin Maximu...

Page 41: ...inal Tool 2 or 2 5mm flat screwdriver Figure 3 33 Wire connection e Plug the cable terminal into the P205 connector Figure 3 34 The dry contact communication cable connection No Cable Color Function 1 Red N O 2 Blue N C 3 Green COM ...

Page 42: ...tor 2 Cable connection of RS485 network communication RJ45 connector 3 Cable connection of RS485 communication 5 pin connector 4 Cable connection of RS485 network communication 5 pin connector 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 43: ...in connector a Put the communication cable through the conduits inside the wiring box and crimp the cable as shown in Figure 3 36 and Figure 3 37 Tools Wire stripping pliers crimping pliers for RJ45 connector Wire stripping pliers 2 or 2 5mm 0 08in or 0 1in flat screwdriver for 5 pin connector b Plug the crimped connector into the corresponding port 1 NC 2 NC 3 Red RS485 4 Blue RS485 5 Green COM ...

Page 44: ...485 network connection as shown in Figure 3 38 Other communication topologies such as the star networks are not recommended 1 2 N Datalogger S402 OFF S402 OFF S402 ON Figure 3 38 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 45: ...n 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 on the AC cir...

Page 46: ...responding grid standard and press ENTER Set Standard Figure 4 1 Set up grid standard 1 VDE 0126 2 VDE 4105 3 G59 2 4 C10 11 5 CEI 0 21 6 IEEE1547 7 BDEW 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 int...

Page 47: ... 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 information 725 V 38 5A 277 27 9 223 2 PV...

Page 48: ... 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 49: ...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 50: ...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 51: ... 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 725 V 38 5A 277 27 9 223 2 PV1 08 12 13 10 05 720 V 31 9A 277 22 9 183 7 PV2 08 12 13 10 10 ...

Page 52: ... 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 53: ...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 60 0Hz Ia 13 9A Ib 14 1A Ic 13 1A Tmod 78 2C Tamb 50 C Upv 1 360 0V...

Page 54: ...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 55: ... 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 St20...

Page 56: ...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 57: ...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 58: ...interface 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 ...

Page 59: ...and 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 sam...

Page 60: ...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 61: ... 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 62: ...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 63: ...hold value of Level 1 Max grid voltage 200 0 528 0 552 0 VMaxTripT1 S Threshold value of Level 1 Max grid trip voltage 0 1 00 600 00 GridV Min1 V Threshold value of Level 1 Min grid voltage 0 422 4 480 0 VMinTripT1 S Threshold value of Level 1 Min grid trip voltage 0 2 00 600 00 GridV Max2 V Threshold value of Level 2 Max grid voltage 480 0 576 0 624 0 VMaxTripT2 S Threshold value of Level 2 Max g...

Page 64: ...minTripT1 S Trip time of Level 1 Min grid frequency 0 0 16 600 00 GridF Max2 Hz Protection threshold value of Level 2 Max grid frequency 50 00 61 00 65 00 FmaxTripT2 S Trip time of Level 2 Max grid frequency 0 0 05 600 00 GridF Min2 Hz Protection threshold value of Level 2 Min grid frequency 45 00 59 00 60 00 FminTripT2 S Trip time of Level 2 Min grid frequency 0 0 05 600 00 GridFmaxRecT Hz Recove...

Page 65: ... Turn off power step 0 01 1 50 2 00 IsoResis KOhm Isolation resistance 10 0 200 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 RePowerContr and FreqDeratCtrl menus 1 ActiveContr menu adjust the active power of AC output the range is 0 100 0 2 RePowerContr menu...

Page 66: ... 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 Figure 5 17 PF P curve mode 6 Q U Curve Q U curve mode Capacitive PF 1 1 Inductive PFCurveP1 PFCurvePF1 PFCurveP2 PFCurvePF2 P INSTRUCTION The PF P Curve function is only a...

Page 67: ...eters are set up Figure 5 5 Parameters of reactive power control IEEE 1547 Mode Parameter Name Setup range lower limit default upper limit Description Q ReactiveComp 100 0 0 0 100 0 PF PowerFactor 0 80 1 000 0 80 PF P PFCurveP1 0 50 0 100 0 See Figure 5 17 Capacitive Q _ Inductive QuCurveU2i QuCurveQ2i U V QuCurveU1i QuCurveQ1i QuCurveU1 QuCurveQ1 QuCurveU2 QuCurveQ2 INSTRUCTION The Q U curve func...

Page 68: ... 528 0 See Figure 5 18 QuCurveQ2 100 0 50 0 100 0 See Figure 5 18 QuCurveU1i V 422 4 441 6 480 0 See Figure 5 18 QuCurveQ1i 100 0 0 0 100 0 See Figure 5 18 QuCurveU2i V 422 4 432 0 480 0 See Figure 5 18 QuCurveQ2i 100 0 50 0 100 0 See Figure 5 18 QuCurvTripP 5 0 20 0 100 0 Qu curve trip power QuCurveReP 5 0 5 0 100 0 Qu curve revocation power 3 FreqDeratCtrl menu Set up the parameters of over freq...

Page 69: ...ve current K 0 1 5 10 0 LVRTNegCurrK LVRT negative current K 0 2 0 10 0 5 6 OtherProtect menu set up the threshold value of leakage current and output DC component protection Table 5 7 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 curren...

Page 70: ...d the ambient 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 ...

Page 71: ...er 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 in this mo...

Page 72: ...e 6 4 Fault indication interface 6 4 Grid tied power generation CPS SCA23 28KTL DO US 480 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 WARNING All the installation and wiring connections should be performed by qualified technical personnel Disconnect t...

Page 73: ...ic array 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 sta...

Page 74: ...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 for troubleshooting 7 1 2 LCD fault an...

Page 75: ...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 reboot the system 3 Contact after sales service personnel 2 CommE...

Page 76: ...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 the alarm will be eliminated auto...

Page 77: ...stallation 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 solutions 1 Observe for 10 minutes an...

Page 78: ...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 30 minutes and see whether the alarm will...

Page 79: ...ystem 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 10 minutes and see whether the alarm will be eliminated automatically 2 Detect whether the electrical connection is abnormal 3 Contact after sales service personnel 7 IsolationErr Definitio...

Page 80: ...r 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 section 5 4 4 3 Contact ...

Page 81: ...o 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 high vol...

Page 82: ...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 83: ...80 1 5 2 4 3 ...

Page 84: ...81 Figure 7 1 Replace cooling fans 50 60mm mm 50 60mm mm 6 ...

Page 85: ...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 86: ...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 5 Install the cover board on the connector of the wiring box ...

Page 87: ...nutes to ensure the internal capacitors have been completely discharged 6 Measure the AC output cable terminal voltage against the ground and make sure the voltage is 0V 7 Disconnect the AC and PE cables referring to 3 3 2 AC and ground connection 8 Disconnect the DC cables referring to 3 3 1 DC connection 9 De install the inverter using reverse of installation steps referring to 3 2 Mechanical in...

Page 88: ... 48A per MPPT Number of DC Inputs 8 inputs 4 per MPPT DC Disconnection Type Load rated DC switch AC Output Rated AC Output Power 23kW 28kW Max AC Output Power 23kW 28kW Rated Output Voltage 480Vac Output Voltage Range 3 422 528Vac Grid Connection Type 3Φ N PE Max AC Output Current 32A 39A Rated Output Frequency 60Hz Output Frequency Range 4 55 66Hz 1 Exceeding the Max DC Input Voltage may cause pe...

Page 89: ...e Range 13 F to 140 F 25 C to 60 C derating from 113 F 45 C Operating Humidity 0 95 non condensing Operating Altitude 13123 4ft 4000m derating from 6561 7ft 2000m Display and Communication Display LCD LED Communication Standard RS485 Modbus Mechanical Data Dimensions WxHxD 23 6 39 4 9 1in 600 1000 230mm Weight 122lbs 55kg Orientation 15 90 degrees from horizontal Safety Safety and EMC Standard UL1...

Page 90: ...40 60 80 100 PV Voltage V Po Pn 300 500 800 900 1000 480 Figure 8 1 SCA23 28KTL derating curve of PV input voltage Note 2 When the ambient temperature is higher than 113 45 the output power begins derating as shown in Figure 8 2 Po Pn Tamb 45 60 100 80 60 40 20 113 140 55 Figure 8 2 SCA23 28KTL derating curve with high temperature ...

Page 91: ... 113 6562ft 13123ft Figure 8 3 SCA23 28KTL 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 SCA23 28KTL derating curve of grid voltage ...

Page 92: ...this product is specified in the contract otherwise the warranty period is 5 years For service Chint Power Systems America will provide local support For Warranty terms please refer to the CPS America standard warranty policy in place at time of purchase ...

Page 93: ...rd CPS SCA23 28KTL DO US 480 inverter 1 Options DC SPD 1 DC and AC SPD 1 The following figure shows the wiring box equipped with the optional components AC SPD DC SPD The position of the optional communication card Figure A 2 Internal structure of CPS SCA23 28KTL DO inverter with optional components ...

Page 94: ...power com Service Hotline 855 584 7168 Address 700 International Parkway Suite 102 Richardson TX 75081 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 12 MKT PN 9 0020 0119C0 ...

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