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Electrical Connection 

  29  /  79 

 

 

Communication Cable Connection 

The inverter supports industry standard Modbus RS485 communication. 

4.6.1 

Communication Board 

 

Figure 4-11 Communication Board 

No.  Item names 

Picture 

Configuration 

1 
 

RS485 port 
6-pin connector plug 

 

6 - RS485_GND (Common) 
5 - RS485_B 
4 - RS485_A 
3 - RS485_GND (Common) 
2 - RS485_B 
1 - RS485_A 

2 

S201 Selector switch 
(set terminal resistor) 

 

OFF  -  Disable  the  terminal 
resistor 
ON  -  Enable  the  terminal 
resistor 

Table 4-7 Communication board Interfaces 

Summary of Contents for SCH275KTL-DO/US-800

Page 1: ...USER MANUAL SCH275KTL DO US 800 Grid Tied PV Inverter CHINT POWER SYSTEMS AMERICA CO LTD REVISION 1 0 NOVEMBER 2021 ...

Page 2: ... Inspection 13 Installation Precautions 14 Installation Requirements 15 3 3 1 Environment Requirements 15 3 3 2 Installation Modes 15 3 3 3 Space Requirements 15 Installation Procedures 16 3 4 1 Install the Inverter 16 3 4 2 Install the WIFI Module 19 4 Electrical Connection 20 Schematic Diagram and Circuit Design 20 Cable Specifications 20 Tools Required and Torque Values 21 Connect Interfaces an...

Page 3: ...tting 38 6 4 3 History 56 6 4 4 Turn ON OFF 57 7 Troubleshooting 59 LED Indicator Troubleshooting 59 Common Fault and Troubleshooting 60 8 Maintenance 66 Check Electrical Connections 66 Clean the Air Vent Filter 66 Replace the Cooling Fans 66 Replace the Inverter 68 9 Technical Data 69 Datasheet 69 Measurement Tolerance 74 10 Quality Assurance 75 Warranty 75 Liability Exemption 75 Warranty Clauses...

Page 4: ...re using Target Readers Plant owner Project Engineer Installation engineer Maintenance engineer Installation commissioning troubleshooting and maintenance of the inverter must be done only by qualified personnel If you encounter any problems during the above mentioned operation please check the user manual carefully You can also contact your local dealer or supplier for help if the problem still e...

Page 5: ...y DANGER DANGER indique une situation dangereuse avec un niveau de risque élevé qui si elle n est pas évitée entraînera la mort ou des blessures graves WARNING WARNING indicates a hazardous situation with medium level of risk which if not avoided could result in death or serious injury ATTENTION AVERTISSEMENT indique une situation dangereuse avec un niveau de risque moyen qui si elle n est pas évi...

Page 6: ...Table 1 1 Warnings and Symbols in this Document Markings on the Product Symbols Meanings WARNING Risk of Electric Shock ATTENTION Risque de choc electrique CAUTION Risk of electric shock from energy stored in capacitor Do not remove cover until 5 minutes after disconnecting all sources of supply ATTENTION Risque de choc électrique à partir d énergie stockée dans les condensateurs Retirer le couver...

Page 7: ...a terre de protection pour assurer la sécurité de fonctionnement RoHS SYMBOL In accordance with 2011 65 EU regulations the inverter imposes restrictions on the use of specific hazardous substances in electrical and electronic equipment SYMBOLE RoHS Conformément à la réglementation 2011 65 UE l onduleur impose des restrictions sur l utilisation de substances dangereuses spécifiques dans les équipem...

Page 8: ... the inverter and proceed with normal troubleshooting procedures refer to Troubleshooting chapter WARNING All the installation and wiring connections should be performed only by qualified technical personnel Disconnect the inverter from PV modules and the AC grid before maintaining and operating the equipment Risk of electric shock and fire Use only with PV modules that in conformance with the max...

Page 9: ...ed on the APP interface a If the MPPT current is lower than 20A or the irradiation is obviously low turn OFF the DC switch b If it is safe to open the front cover proceed with troubleshooting procedures Make sure appropriate safety precautions and PPE are used 5 If it is not possible to read the DC MPPT currents through the APP interface and no fire smoke or voltage AC or DC to ground is present i...

Page 10: ...d AC power distribution equipment as shown in Figure 2 1 The solar energy is converted by PV modules to DC power and then inverted by the inverter to AC power with the same frequency and phase as the AC grid Now the AC power can be supplied in all or in part to local loads with the remaining power fed to the grid Bidirectional electric meter AC power distribution equipment Figure 2 1 Grid tied PV ...

Page 11: ...capacitors to extend inverter s service life High protection degree NEMA Type 4X enclosure meets the demanding needs of both indoor and outdoor use DC switch can be locked in the OFF position to avoid accidental turning on Intelligent Integration Integrated load break rated DC disconnect switches Up to 36 fused string inputs eliminate the need for external combiner boxes simplifying installation P...

Page 12: ...ncludes Anti Islanding detection as required by UL1741 IEEE1547 It will continuously make bi directional perturbations to the frequency of the output current by injecting a small amount of reactive power in order to detect a possible islanding condition If the grid is stable these small perturbations will have negligible effects on the system voltage frequency However in an islanded condition the ...

Page 13: ...w Figure 3 1 Delivery list No Item names QTY Usages 1 Inverter 1 For PV inverter 2 Mounting bracket 1 Install inverter 3 PE accessory bag 1 Include accessories A D 4 PE accessory bag 1 Include accessories E K 5 PE accessory bag 1 Include accessories I N 6 PE accessory bag 1 Include accessories O 7 PE zip file bag 1 Include quick guide warranty card certification A M10x50 Hex combination screw 6 Fo...

Page 14: ...en authorized by the local electricity supply authority to connect to the grid Installation personnel must be qualified electricians or those who have received professional training Wear and use proper PPE personal protective equipment during installation Sufficient space must be provided to allow the inverter cooling system to operate normally Install the inverter away from flammable and explosiv...

Page 15: ...he inverter shall be installed following the modes as below a If the location permits install the inverter vertically b If the inverter cannot be mounted vertically it may be tilted backward by lower than 15 degrees from vertical direction c Do not mount the inverter leaning forward d Do not mount the inverter upside down e Do not mount the inverter horizontally Figure 3 3 Installation modes NOTIC...

Page 16: ...nstalled back to back and proper distance shall be kept to ensure good ventilation D The inverter can be installed under the panel while its back and top shall not be blocked to ensure good ventilation E The inverter can be installed on a single column holding rod and shall be checked to confirm a secure installation Installation Procedures 3 4 1 Install the Inverter 1 Mark hole positions on the i...

Page 17: ... Tools required 16mm hex socket wrench torque 12 5N m 110 lbf in Figure 3 6 Fasten the mounting bracket 3 Position the inverter onto the mounting brackets by either of the two ways A Lift mounting screw two M10 lifting eyebolts to the studs at the top of the inverter Use sling rope or bar inserted through both lifting eyebolts to lift the inverter onto the mounting bracket The minimum angle betwee...

Page 18: ... Figure 3 8 Handle positions CAUTION The total weight of the inverter is approx 119 kg 262 4 pounds Ensure the mounting bracket is properly installed before hanging the inverter on the bracket It is recommended to have at least 3 people to mount the inverter due to the weight of the equipment 4 Use two M6X90 screws to fasten inverter on mounting bracket Tools required 3 Philips head screwdriver to...

Page 19: ...xing screws on the DB9 connector cover as shown in Figure 3 10 Figure 3 10 Expose the connector 2 Rotate the cover to expose the connector and then install the WIFI module with the two screws just removed Pay attention to the control torque of 1 6 Nm to ensure that the seal watertight Figure 3 11 Install WIFI module ...

Page 20: ...2 PV3 DC Switch MPPT1 AC Output DC SPD BUS AC EMI AC Relay MPPT2 MPPT12 LC Filter AC SPD DC EMI DC AC PV Input PV4 PV5 PV6 PV4 PV5 PV6 PV34 PV35 PV36 PV34 PV35 PV36 Figure 4 1b Schematic Diagram of the 36 Input Inverter Cable Specifications Cable Type Outer dia cross sectional area DC Use 90 copper aluminum wire 10 4AWG GND Outdoor copper core wire Phase wire diameter 2 AC Outdoor three core coppe...

Page 21: ... m 1 8 lbf in 6 Diagonal pliers Cut cable 7 Wire stripping pliers Remove jacket 8 Crimping pliers Crimp terminal Table 4 2 Tools required and torque values Connect Interfaces and Connection Points In the following text you will find the connect interfaces internal connection points as well as their names positions etc 4 4 1 Connection Interfaces The connection interfaces of inverter are as shown i...

Page 22: ... figure 4 3 Figure 4 3a Internal connection points of 36 input inverter Figure 4 3b Internal connection points of 24 input inverter No Item name 1 DC input fuse holder terminal NA for 24 input inverter 2 DC Ground 3 AC output terminal block 4 AC Ground 5 Communication board Table 4 4 Names of Internal connection points ...

Page 23: ...ve the four screws on the front cover and then lift the cover slightly to remove it Figure 4 4 Remove the front cover 4 5 1 Grounding There are two kinds of grounding method for this inverter You can choose either one way as below a Connect two internal DC grounding terminals in the middle and one AC grounding terminal on right side as shown in Figure 4 5 or b Connect the external grounding point ...

Page 24: ...and conduit fittings into the hole Then route the cables through the conduit inside the wiring box 2 A Circuit Ground should run with the AC Power cables and connected to the internal ground bus IMPORTANT There are no differences on Internal DC and AC Ground Terminals External Ground Cable Connections and AC wiring terminals between 24 input inverter and 36 input inverter Therefore only the latter...

Page 25: ...tput of the inverter is connected to the grid an external AC circuit breaker or fused disconnect deviceis required to be installed to safely disconnect the inverter from the grid should an overcurrent occur The minimum size breaker is determined by NEC calculations The internal temperature of the AC Panel must be considered and appropriate derating applied to prevent nuisance tripping Inverter mod...

Page 26: ...VDC ADLER series 1500VDC fuse are recommended The rated current of the fuse is generally 1 56 short circuit current from the PV strings rounded up to the next available fuse size The following table lists the names types and specifications of ADLER series fuses which are within the rated voltage of PV panels Names Standard 20A fuses 25A fuses 30A fuses 35A fuses Types A74 A74 A94 A94 Spec 20A 1500...

Page 27: ...egative terminal of inverter s DC input Figure 4 9 Polarity Check Perform cable connection as per the following steps 1 Remove the liquid tight hole plugs from the DC input of the wiring box and install conduit and conduit fittings into the holes Then route the cables through the conduit inside the wiring compartment 2 Connect the DC cables to the fuse holders of 36 input inverter as shown in Figu...

Page 28: ...Electrical Connection 28 79 Figure 4 10a Connect the DC cable to fuse holder Figure 4 10b Connect the DC cable to DC terminal NOTICE The use of ferrules is recommended for all stranded wire connections ...

Page 29: ...tion Board Figure 4 11 Communication Board No Item names Picture Configuration 1 RS485 port 6 pin connector plug 6 RS485_GND Common 5 RS485_B 4 RS485_A 3 RS485_GND Common 2 RS485_B 1 RS485_A 2 S201 Selector switch set terminal resistor OFF Disable the terminal resistor ON Enable the terminal resistor Table 4 7 Communication board Interfaces ...

Page 30: ...ress for each inverter can be set up through the APP interface Up to 32 inverters can be connected in a serial fashion in the RS485 communication network Therefore the daisy chain topology see Figure 5 4 is recommended for the RS485 network connection which can minimize the noise and bus reflections Other communication topologies such as the star networks are not recommended Figure 4 13 RS485 Netw...

Page 31: ... 4 If the inverter is the last Modbus device in the daisy chain make sure the Modbus termination switch S201 is in the ON position to enable Modbus termination while all other switches shall be in the OFF position 5 Connect the shield or drain wire continuously but not in contact with RS Common or Enclosure Ground Single point ground the shield drain wire 6 Do not connect RS485 Common to ground Af...

Page 32: ... breaker is appropriately sized Test and check that the AC voltage is within the normal operating range Make sure the DC open circuit voltage of input strings is less than 1500V Commissioning Steps Commissioning the inverter as follows 1 Turn on the AC circuit breaker or fused switch disconnect 2 Turn on the DC circuit breaker Start from step 3 if no circuit breakers is available 3 Switch the DC S...

Page 33: ... as an Access Point from the user communication devices tablet smartphone etc Users can perform the following procedures to set the APP easily First of all open your Bluetooth function 1 Open the CPS Connect Pro APP and then choose NO LCD Inverter icon the interface will go to WiFi Setting page 2 Touch the wireless network named CPLK XXXXXXX X can be found on the LINKIT label the interface will go...

Page 34: ...odes are available IEEE1547 Rule21 ISO NE Other SRDs can be implemented by manual configuration of settings PV Link Type The working mode of the DC input connection and MPPT can only be configured as Independent Neutral Line this inverter can only be applied in IT system the neutral line connection is not supported RS485 Choose the communication data Modbus Address and Baud Rate Inverter Clock Set...

Page 35: ...application is not permitted 5 When the device screen shows the normal operation status and the RUN light on the LED panel is illuminated it indicates that the grid connection and power generation are successful You can now browse through the real time data in the APP now 6 If the inverter fails to operate normally the FAULT light will illuminate and the fault information will be shown on the inte...

Page 36: ...rite Register Warning Running Status ActivePower Derating Protect ReactivePower Derating Command Others LVRT HVRT Manage mysite UpgradeFirmware Grid Code PV Link Type NeutralLine RS485 Inverter Clock Running Data Change password Password Password LcdLess Basic Parameters Figure 6 1 Structure tree of App Interface Main Menu In the Main interface you can access the DC AC OTHER and VERSION informatio...

Page 37: ...r submenus Chart Setting History and Turn ON OFF 6 4 1 Chart In the chart sub menu you can view the power generation situation at different times such as Current Today and Total These data can also be displayed in Day Month Year shown as below in Figure 6 3 Figure 6 3 power generation situation ...

Page 38: ...setting interface Figure 6 4 Setting interface It s possible to access three submenus on the setting interface Inverter Parameters Read Write Register and Upgrade Firmware Inverter Parameters Touch the Inverter Parameters tab you can set the following parameters as required Figure 6 5 Inverter Parameters ...

Page 39: ...gister In the Read Write Register interface you can find the following sub menus Protect LVRT HVRT Others Command ActivePowerDerating ReactivePowerDerating LcdLess Basic Parameters Figure 6 6 Read Write Register Protect The Protect interface displays the protect parameters of the AC grid voltage frequency and recovery etc In addition you can find and set the protection levels of over voltage under...

Page 40: ...APP Interface 40 79 Figure 6 7 Protection Parameters ...

Page 41: ...d Level 1 Min grid voltage 20 00 100 00 70 00 88 00 88 00 VoltMinTripT1 Trip Time Level 1 Min grid trip voltage 0 655 10 00 20 50 2 Secs GridVoltMin1En Level 1 Min grid voltage protection Disable Enable Enable Enable Enable GridVoltMin2 Threshold Level 2 Min grid voltage 20 00 100 00 45 00 70 00 50 00 VoltMinTripT2 Trip Time Level 2 Min grid trip voltage 0 655 0 16 10 50 1 1 Secs GridVoltMin2En Le...

Page 42: ...in2 En Level 2 Min grid frequency protection Disable Enable Enable Enable Enable GridFrqMin3 Threshold Level 3 Min grid frequency 48 60 56 50 57 56 5 Hz FrqMinTripT3 Trip time of Level 3 Min grid frequency 0 655 0 16 0 16 0 16 Secs GridFrqMin3 En Level 3 Min grid frequency protection Disable Enable Disable Disable Disable Voltage and Frequency Protection Recovery VoltMaxRecovery Recovery Max thres...

Page 43: ...lance 0 01 10 10 10 10 GridVoltUnbalanc eEn grid voltage unbalance enable Disable Enable Enable Enable Enable PhaseLose and Phase PE parameters PhaseLoseCoeff Phase lose protection trigger value 0 5 30 0 3 0 3 0 3 0 PhaseLoseRcvCo eff Phase lose protection recovery value 0 5 30 0 2 0 2 0 2 0 PhaseLoseVUnba lance PhaseLose Voltage Unbalance 0 1 10 0 10 0 10 0 10 0 PhasLoseCoeffEn able Phase lose pr...

Page 44: ...erface 44 79 LVRT HVRT The LVRT HVRT interface is used to set the LVRT Low voltage ride through and HVRT High voltage ride through parameters as shown in the following interfaces Figure 6 8 LVRT HVRT interface ...

Page 45: ... 655 0 1 2 0 1 2 0 1 2 Secs LVRTVolt 3 4 Threshold LVRT 3rd or 4th point 0 100 0 100 49 70 49 70 49 65 LVRTTime 3 4 Time of LVRT 3rd or 4th point 0 655 0 655 1 210 1 2 10 5 1 2 3 5 Secs LVRTVolt 5 6 Threshold LVRT 5th or 6th point 0 100 0 100 70 87 5 70 87 5 65 87 5 0 00 0 05 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 95 1 00 1 05 1 10 1 15 1 20 1 25 1 3...

Page 46: ...Volt 7 8 Threshold of HVRT 7th or 8th point 100 135 100 135 111 100 111 100 111 100 HVRTTime 7 8 Time of Level HVRT 7th or 8th point 0 655 0 655 continues continues continues Secs LVRT Setting LVRTModeSetting LVRT mode setting Disable Enable reactive power output Enable no reactive power output Enable active power output Enable reactive power output Enable reactive power output Enable reactive pow...

Page 47: ...APP Interface 47 79 Others In the others interface you can find following common parameters shown as below ...

Page 48: ...NomSoftStartP Normal Start Pwr Rate 0 01 100 4 00 100 00 2 00 NomDeratingStep Normal Pwr Derating Step 0 01 100 6 00 100 00 6 00 PVSlowStartStep PV Slow Start Step 0 01 100 10 10 10 PVSlowStartPwDelt a PV Slow Start Pwr slope 0 01 100 5 00 5 00 5 00 PVSlowStartSEn PV Slow Start Setting Disable Enable Disable Disable Disable FaultPowerT IGBT Fault Temp 94 0 95 0 95 0 95 0 FaultEnvT Enclosure Fault ...

Page 49: ...30 30 30 DuplicationControl Duplication Control 0 100 0 0 0 PID Check Settings PID Check Setting Disable Enable Disable Disable Disable Island Protect anti Island protection Disable Enable Enable Enable Enable FANDetectEn fans detection Disable Enable Enable Enable Enable ACSPDDetectEnSet AC surge protection device test Disable Enable Disable Disable Disable OperationOverVol Operation over voltage...

Page 50: ...nction is used for multi MPP tracking and is useful if the PV panels are partly shadowed or installed with different angles The factory setting of MPPT scan is Enabled yet can also be set to Disabled When the MPPT scan function is enabled the scan period is 60 minutes The inverter will scan the maximum power point in the MPPT range according to the following conditions The total input power is low...

Page 51: ...er Derating Over Voltage Derating Over Frequency Derating etc Figure 6 13 ActivePower Derating interface You can see the Curve of over voltage derating in figure 6 14 and Curve of over frequency derating in figure 6 15 Grid voltage 100 00 135 00 Settable Power Present 0 0 0 100 0 Settable GridV Max1 Figure 6 14 Curve of over voltage derating ...

Page 52: ... 110 00 110 00 VwCurveP2 Power of VwCurve point P2 0 110 0 0 0 0 0 0 OpenLoopRespT Open loop response time 0 5 90 0 10 0 10 0 10 0 Secs OvrVoltDerEn Over voltage derating enable Disable Enable Enable Enable Disable Over Frequency Derate OvrFrqMin The trigger frequency of over frequency derating 60 72 60 04 60 04 60 50 Hz OvrFrqMax The end frequency of over frequency derating 60 72 62 53 62 03 61 4...

Page 53: ... ActivePower Derating para IEEE1547 2018 Rule21 and ISO NE ReactivePowerDerating The ReactivePowerDerating interface is used to set the Grid reactive power derating parameters including PF parameters and Qu parameters etc Figure 6 16 The ReactivePowerDerating interface Note The PF and Q value can be adjusted by remote software if the Remote is selected PF Set Set the PF value Note Change the react...

Page 54: ...addition the table listed below can provide detailed parameter information for you Parameter name Description Range Grid code IEEE 1547 Grid code RULE 21 Grid code ISO NE Unit PF P Power Factor Vs Power PFpCurveP1 Power of PF P point 1 0 110 50 50 50 PFpCurvePF1 PF of PF P point 1 1 1 1 1 1 NA Capacitive PF 1 1 Inductive PFCurveP1 PFCurvePF1 PFCurveP2 PFCurvePF2 P Capacitive Q _ Inductive QuCurveU...

Page 55: ...QuCurveQ1i Reactive power of Q u point 1i 66 66 0 0 0 QuCurveU2i Voltage of Q u point 2i 80 100 92 92 90 QuCurveQ2i Reactive power of Q u point 2i 66 66 44 30 50 QuCurveTriPower The trigger power of Q u 5 100 20 20 20 QuCurveUndoPo wer The undo power of Q u 5 100 5 5 5 Qp Dynamic Var Support QpCurveP1 Active power of Q p point P1 0 110 20 0 20 0 20 0 QpCurveQ1 Reactive power of Q p point Q1 66 66 ...

Page 56: ...meters as below Figure 6 19 LcdLess Basic Parameters interface The last three registers are configured as standard i e the inverter supports IV curve function Automatic MdbsAdr assignment function and the Fault recording function However almost all these parameters are read only that means you cannot change them randomly More information please contact the after sale service personnel Firmware Upg...

Page 57: ...APP Interface 57 79 Figure 6 20 History interface 6 4 4 Turn ON OFF Figure 6 21 Turn ON OFF interface ...

Page 58: ... be shut down manually if Grid Code setting or maintenance is required Move the cursor to submenu Turn ON OFF Move the cursor to Turn OFF and ensure then the inverter will be shut down Automatic Turn ON OFF The inverter will start up automatically when the output voltage and power of PV arrays meet the set value AC power grid is normal and the ambient temperature is within allowable operating rang...

Page 59: ...state Flash Derated running status light up 0 5s light off 1 5s OFF In other operation status or power supply not working GRID Grid status indication light ON Grid is normal Flash Grid fault light up 0 5s light off 1 5s OFF Power supply not working FAULT Fault status indication light ON Indicates a Fault Slow flash Indicates Alarm light up 0 5s light off 2s Fast flash Protective action light up 0 ...

Page 60: ...al temperature or internal malfunction of the machine The fault information will be displayed on the APP interface The issue can be identified and resolved based on the definitions possible causes and recommended solutions listed in the following table There are generally 3 types of fault warning protection and hardware fault Proper analysis is recommended before contacting after sales service Typ...

Page 61: ...t after sales service personnel Warn0040 DC SPD fault Recommended solutions The alarm is reserved now The alarms in field can be ignored Warn0050 TempSensorErr 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 Warn0100 AC SPD fault Recommended solutions The alarm is reserved now The alarm...

Page 62: ...ng temperature 2 Check whether air inlet is blocked 3 Check whether fan is blocked 4 Check whether the location of installation is appropriate or not 5 Observe for30 minutes and see whether the alarm will be eliminated automatically 6 Contact after sales service personnel Protect0180 The sampling offset of DCI 1 If the inverter can start up then recalibrate 2 If the inverter always report this ala...

Page 63: ...ng that triggers the alarm Trace wirings of faulted string to find any leakage to Earth Ground Protect0150 Mini MCU Fault 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 minute between OFF and ON for all energy to discharge 3 If inverter cannot clear fault replace inverter Protect0110 BUS over voltage firmware 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 mi...

Page 64: ...rter open loop self test fault 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 minute between OFF and ON for all energy to discharge 3 If inverter cannot clear fault replace inverter Hardware Faults Fault0130 Bus over total voltage 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 minute between OFF and ON for all energy to discharge 3 If inverter cannot clear f...

Page 65: ...rter cannot clear fault replace Control Board or inverter Fault0020 Bus over volt Hardware 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 minute between OFF and ON for all energy to discharge 3 If inverter cannot clear fault replace inverter Fault0150 Open loop self check failure 1 Restart inverter by recycle both AC and DC switches 2 Wait for 1 minute between OFF and ON for al...

Page 66: ...heck for cable damage especially whether the cable surface is scratched or smooth Repair or replace the cables if necessary Clean the Air Vent Filter The inverter can become hot during normal operation Inverter uses built in cooling fans to provide sufficient air flow to help in heat dissipation In order to ensure good ventilation and heat dissipation of the inverter it is necessary to check the a...

Page 67: ...2 Disconnect the watertight cable connector from cooling fan as shown in Figure 8 2 Figure 8 2 Disconnect the watertight cable connector 3 Use a No 2 Phillips head screwdriver to remove the 4 screws fixing every fan Figure 8 3 Figure 8 3 Replace cooling fans ...

Page 68: ...lips head screwdriver torque value 16kgf cm Replace the Inverter IMPORTANT Make sure the AC breaker and DC switch of inverter are turned off Replace the inverter in reverse order relative to the installation steps in section 3 4 Install the Inverter 1 Use a 3 Philips head screwdriver to remove the two M6X90 screws 2 Remove the inverter from its mounting bracket with the coordination of 3 people 3 ...

Page 69: ... MPPT or 24 Non Fused Inputs 2 per MPPT determined by SKU Max input current 60A x 6 30A x 12 30A x12 Max input short circuit current 90A x 6 50A x 12 50Ax12 DC Disconnection Type Load rated DC switches AC Output Nominal AC output power 2 275kW Maximum AC output power 275kVA Nominal AC voltage 2 800Vac Output voltage range 704 880Vac Grid connection form 3Φ PE Maximum AC output current 800Vac 198 5...

Page 70: ...Fi APP Communication Modbus RS485 Ethernet TCP IP PLC CAN Structural parameters Dimensions WxHxD mm 1050x690x400 Weight kg 119 Fused String Inputs 5 20A fuses provided Fuse values up to 30A acceptable Safety Safety and EMC standards UL1741_2018 CSA 22 2 NO 107 1 16 FCC CFR 47 part15 Grid connected specification IEEE1547_2003 IEEE1547_2014 IEEE1547_2018 CA Rule21 HECO Rule 14H HECO ML ISO NE Table ...

Page 71: ...r than 42 C the inverter output power will begin to derate as shown in Figure 9 3 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 OUTPUT POWER KVA INPUT VOLTAGE VDC INPUT VOLTAGE DERATING SCH275KTL 42 45 50 Vac 800V 0 10 20 30 40 50 60 70 80 9...

Page 72: ...ng inputs only applicable to the SCH275KTL 36 input model 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 OUTPUT POWER KVA AMBIENT TEMPERATURE TEMPERATURE DERATING SCH275KTL 2500m 3000m 4000m 200 210 220 230 240 250 260 270 280 0 500 1000 1500 2000 2500 3000 3500 4000 4500 OUTPUT...

Page 73: ...es and various ambient temperature condition Figure 9 5 P Q Capabilities at Nominal Output Voltage 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 ACTIVE POWER KW REACTIVE POWER KVAR P Q CURVE SCH275KTL 50 45 42 PF ...

Page 74: ...es for the measurement results it gives The general inverter tolerances are as below 5 for real time measurements with output power below 20 nominal power 3 for real time measurements with output power above 20 nominal power 4 for all statistical data CPS inverter tolerances are specified as below Voltage tolerances 1 Current tolerances 2 Frequency tolerances 0 01Hz Power tolerances 5 Power factor...

Page 75: ...odification of the product or provided software 5 Ignore the safety warnings and relevant statutory safety regulations contained in the product and documentation 6 Unforeseen disasters or irresistible accidents occur Warranty Clauses 1 For products that fail during the warranty period our company will repair or replace new products free of charge 2 The unqualified product under replacement should ...

Page 76: ...be very happy to help you CHINT POWER SYSTEMS AMERICA CO LTD Address 1297 N Plano Rd Richardson Texas 75081 Service Hotline 855 584 7168 Email AmericaSales chintpower com Website www chintpowersystems com Shanghai CHINT Power Systems Co Ltd Headquarters Building 4 No 3255 Sixian Road Songjiang District Shanghai China Tele 86 21 3779 1222 6300 Fax 86 21 3779 1222 6001 ...

Page 77: ... 4 3a Internal connection points of 36 input inverter 22 Figure 4 3b Internal connection points of 24 input inverter 22 Figure 4 4 Remove the front cover 23 Figure 4 5 Internal DC and AC Ground Terminals 24 Figure 4 6 External Ground Cable Connection 24 Figure 4 7 AC wiring terminals 25 Figure 4 8 Supported IT power grid 26 Figure 4 9 Polarity Check 27 Figure 4 10a Connect the DC cable to fuse hol...

Page 78: ... 2 Derating curve with grid voltage 71 Figure 9 3 Derating curve with high temperature 72 Figure 9 4 Derating curve with working altitude 72 Figure 9 5 P Q Capabilities at Nominal Output Voltage 73 Appendix B Table list Table 1 1 Warnings and Symbols in this Document 6 Table 1 2 Markings on the Product 7 Table 1 3 Safety Instructions of Operating the PV Inverter 9 Table 2 1 Smart inverter function...

Page 79: ... Rule21 and ISO NE 53 Table 6 5 ReactivePowerDerating Para IEEE1547 2018 Rule21 and ISO NE 56 Table 7 1 LED Indicators and their indications 59 Table 7 2 Troubleshooting based on LED Lights 60 Table 7 3 Troubleshooting list 65 Table 9 1 Datasheet of the inverter 70 ...

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