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Solar Grid -tied Inverter ST40KTL-M/ ST50KTL M/ ST50KTL-M/ ST60KTL-M User Manual User Manual User Manual User Manual Version 2.0 (EN) Version 2.0 (EN)
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All rights to the content of this manual are owned by MOSO Power Supply Technology Co., Ltd (hereinafter “MOSO”). No part of this document can be modified, distributed, reproduced or published in any form or by any means without prior written permission from MOSO...
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ONTENT 1.PRODUCT INTRODUCTION..................... 1 1.1Overview ..........................1 1.2Packing list ..........................2 ........................3 AFETY INSTRUCTIONS 2.1Safety symbols and certification marks ................ 3 2.2TERMS and conditions ....................... 4 ........................5 PERATION INTERFACE 3.1operation interface diagram .................... 5 3.2Operation button and status indicator ................. 6 3.3 LCD DISPLAY INTERFACE ....................
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5.3eLECTRICAL CONNECTION .................... 11 5.3.2ac CONNECTION ......................13 5.3.3mONITORING DEVICE INSTALLATION ..............14 ..................... 15 ONNECT TO THE GRID AND DEBUG 7.FAULT AND ALARM TROUBLESHOOTING .............. 16 ......................40 DUCT SPECIFICATION ....................41 V INVERTER WARRANTY MANUAL...
DC current from solar module to AC current, and output to the utility grid. DC current from solar module to AC current, and output to the utility grid. Models are as follows: ST40KTL-M, ST50KTL-M, ST60KTL-M Figure14 ST40KTL- -M, ST50KTL-M, ST60KTL-M...
1. PRODUCT INTRODUCTION PRODUCT INTRODUCTION 1.2PACKING LIST The packing list of corresponding inverters are as below, when receiving inverters, please check if the The packing list of corresponding inverters are as below, when receiving inverters, please check if the accessories are complete. 1.PRODUCT INTRODUCTION PRODUCT INTRODUCTION ST40-60KTL-M packing list:...
Pair Pair OT terminal 2.SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS Please read this manual carefully before use. Improper use may result in electric shock or burn hazard. Please read this manual carefully before use. Improper use may result in electric shock or burn hazard. You must follow the instructions in this manual during installation and maintenance.
disconnected. Open the front cover of the inverter at least 5 minutes after disconnecting. TUV certificate CQC certificate 认证 CE certificate SAA certificate 表示产品已通过 CE 认证 表示产品已通过 SAA 认证 2.SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS 2.2TERMS AND CONDITIONS The inverters meet the national safety standards national safety standards, ensure personal safety during use.
it must be properly dissipated and beware of high-temperature burns. 14) The behavior related to this inverter requires professionals to complete. 15) When the crystal silicon module is selected, the input and output lines of the inverter don’t need to be grounded. Inverter input line needs to be grounded according to module requirements when using thin film modules.
3.2OPERATION BUTTON AND STATUS INDICATOR There are four operation buttons on the front panel of the inverter, and three status indicators. The green indicator on the left shows the DC input status of the inverter, the middle green indicator shows the power generation status of the inverter, and the red indicator on the right shows the alarm status of the inverter.
4.PRODUCT STORAGE The inverter needs to be stored under specific environmental conditions: The inverter needs to be repackaged in the original box. The box needs to be sealed with tape. The inverter needs to be stored in a clean and dry place and protected from dust and moisture. ...
During the operation of the inverter, there will be some noise from the inductors and the fans. The installation place cannot be close to the rest place of the residents. 5.PRODUCT INSTALLATION 5.2INVERTER INSTALLATION When installing multiple inverters at the same time, there should be enough spacing between the inverters to facilitate heat dissipation, wiring and maintenance.
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Figure 18 Multiple cross Multiple cross-type installation 5.PRODUCT INSTALLATION PRODUCT INSTALLATION The inverter will be mounted on the wall or metal bracket through the backing plate in the mounted on the wall or metal bracket through the backing plate in the accessory.
Figure20 ST40/50/60KT 50/60KTL-M Backing plate diagram 5.PRODUCT INSTALLATION PRODUCT INSTALLATION 5.3ELECTRICAL CONNECTION The inverter is designed with a quick connection terminal interface and does not require opening designed with a quick connection terminal interface and does not require opening the upper cover for electrical connection. The identification of the bottom of the corresponding inverter the upper cover for electrical connection.
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L3(T) Positive pole ositive pole wiring port Neutral line Neutral line wiring port Grounding wiring port Grounding wiring port 5.3.1 DC terminal connection 1) The plug and core of MC4plug must be in one in one-to-one correspondence, as shown in the figure below.
Figure Make MC4 DC terminal 5.PRODUCT INSTALLATION 5.3.2 AC CONNECTION ST40/50/60KTL-M AC connection diagram: After the AC cable is crimped to the copper terminal, it is directly locked to the internal PCB of the inverter through screws. The grounding position of the chassis is located on the lower right side of the inverter.
Figure23 ST40/50/60KTL 40/50/60KTL-M AC connection diagram Copper wire Copper wire diameter comparison Model ZRC-YJV-3* three phase+PE ST40/50/60KTL-M ZRC-YJV-3*25mm2+16mm2; Note: The neutral wire of inverter AC side doesn’need to be connected need to be connected. The conventional ground wire is half of the positive wire diameter. The neutral wire is the same as the wire diameter.
Multiple inverter monitoring can realize daisy-chain communication connection through RS485 communication cable. The system diagram is as follows: Inverter1 Inverter Inverter WIFI module GPRS module Other monitoring system Figure25RS485 Serial communication monitoring 6.CONNECT TO THE GRID AND DEBUG Before connecting to the grid connection, the system design, configuration and installation of this product application should consider the contents mentioned in Clause 2.2 and Clause 5 of this manual.
Inverter grid-connecting process includes: power on-wait--self test--connected to grid; the corresponding indicator light flashes during the self-test and the internal relay will make a sound at the same at the same time. After the inverter connecting to the grid, the system operator should check the input parameters and output parameters of the inverter.
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The grid voltage had “Low voltage ride through” W003 LVRT_Fault_Warning ever. The fan is abnormal, check whether the fan is stuck with foreign objects. If the fault does not disappear W004 Fan_Fault_Warning after clear the foreign objects, please contact your supplier for help.
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Alarm code and display information Solution AC lightning protection action, please check whether W010 AC_Thunder_Warning there is lightning strike, contact supplier for help. W011 Smoke_Detect_Warning Please confirm if there is abnormal smoke around. Please confirm the current heat dissipation of the W012 Power_Derate_ Warning inverter, and the abnormal heat dissipation of the...
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The Contactorof the ground leakage current F008 GFDI_Relay_Failure detection system has failed, please contact supplier for help. DC input overvoltage causes IGBT damage, please F009 IGBT_Failure contact supplier for help. DC input overvoltage causes damage to the auxiliary power , or the DC voltage is too low to start. F010 AuxPowerBoard_Failure The auxiliary power.
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There is leakage current on AC side. Please use multimeter to connect to the wire A in series, check F016 GFCI_Failure the leakage current when the grid is connected, and remove the DC input string one by one to check the leakage source.
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insulation,false short circuit, unstable connection and contact supplier for help. Emergency stop fault.Fault occurs when press the emergency stop button, inverter will disconnect from grid and turn off DC circuit breaker; the button can F022 Tz_EmergStop_Fault only be pressed manually, androtate and bounce to rese.
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whether the PV module is damaged or cracked. The DC component of the inverter is abnormal. F028 DCIOver_M1_Fault Please contact supplier for help. 7.FAULT AND ALARM TROUBLESHOOTING Alarm code and display information Solution The inverter relay fails to switch on, please disconnect the AC connection.
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Turn off the DC power until the LCD is off, disconnect the AC connection, exchange the AC F036 AC_GridPhaseSeque_Fault wire of phase A and phase B, then restart the inverter. Please check whether the AC three-phase voltage of the inverter is consistent via LCD. If the voltage F037 AC_Volt_Unbalance_Fault difference is large, that means the three-phase load...
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exceed normal protection value, please check the AC output power, the output AC wire impedance, the load and underloading, contact Grid Company to handle this. Check the three-phase AC voltage, the protection range is 0.8-1.2 times of the rated AC voltage, if exceed normal protection value, please check the F042 AC_WU_UnderVolt_Fault...
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7.FAULT AND ALARM TROUBLESHOOTING Alarm code and display information Solution Check the three-phase AC voltage, the protection range is 0.8-1.2 times of the rated AC voltage, if exceed normal protection value, please check the F046 AC_UV_UnderVolt_Fault AC output power, the output AC wire impedance, the load and underloading, contact Grid Company to handle this.
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restart.Contact supplier for help. Turn off the inverter for 5min and then F054 AC_C_InductCurr_DcHigh_Fault restart.Contact supplier for help. Please disconnect the DC input immediately and measure the DC input voltage with a multimeter to ensure that the DC voltage is lower than 1000V. Considering the regional temperature problem, the F055 DC_VoltHigh_Fault...
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Please confirm it occurs at the moment inverter connects to the grid orafter running for a period of time. Check the voltage and current parameters of F059 AC_V_GridCurr_High_Fault the inverter AC output, and see if there is a suddenvoltage and current change when the fault occurs.
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Alarm code and display information Solution Please confirm it occurs at the moment inverter connects to the grid orafter running for a period of time. Check the voltage and current parameters of F063 AC_C_InductCurr_High_Fault the inverter AC output, and see if there is a suddenvoltage and current change when the fault occurs.
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unobstructed, and contact supplier for help. Check the temperature displayed on LCD, ensure F072 Transformer_LowTemp_Fault that the fan is working properly, the air duct is unobstructed, and contact supplier for help. 7.FAULT AND ALARM TROUBLESHOOTING Alarm code and display information Solution There is leakage current on AC side.
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ever. DC lightning protection action, please check F077 DC_Thunder_Fault whether there is lightning strike, contact supplier for help. AC lightning protection action, please check whether F078 AC_Thunder_Fault there is lightning strike, contact supplier for help. F079 ENV_OverTemp_Fault Ambient temperature too high. F080 ENV_UnderTemp_Fault Ambient temperature too low.
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Check the three-phase AC voltage, the protection range is 0.8-1.2 times of the rated AC voltage, if exceed normal protection value, please check the F083 AC_V_OverVolt_Fault AC output power, the output AC wire impedance, the load and underloading, contact Grid Company to handle this.
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Please disconnect the DC input immediately and measure the DC input voltage of input B with a multimeter to ensure that the DC voltage is lower than 1000V. Considering the regional temperature F088 PVB_VoltHigh_Fault problem, the normal open circuit voltage should not be designed to be greater than 920V.
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ensure that the DC voltage of input E is lower than 1000V. Considering the regional temperature problem, the normal open circuit voltage should not be designed to be greater than 920V. The design is unreasonable and needs to be corrected. It is forbidden to force to connect to the grid.
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Use multimeter and tramegger to measure the insulation resistance value( input B) of the positive and negative poles to the earth, bracket and frame F098 PVB_ISO_Fault respectively. If it is under 37k, which means abnormal, check the wire connection, MC4 plug, whether the PV module is damaged or cracked.
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DC PV module capacity configuration. If there are multiple alarms, please check if there is a short circuit on the DC input A, and contact supplier for help. Software detects overcurrent. Please check the DC PV module capacity configuration. If there are F104 PVB_CurrHigh_Fault multiple alarms, please check if there is a short...
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multiple alarms, please check if there is a short circuit on the DC input D, and contact supplier for help. Software detects overcurrent. Please check the DC PV module capacity configuration. If there are F107 PVE_CurrHigh_Fault multiple alarms, please check if there is a short circuit on the DC input E, and contact supplier for help.
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avoid direct sunlight. There is a slight back discharge in DC, please F115 BusOverN_Fault contact supplier for help. There is a slight back discharge in DC, please F116 BusLowN_Fault contact supplier for help. There is a slight back discharge in DC, please F117 BusOverP_Fault contact supplier for help.
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Please confirm it occurs at the moment inverter connects to the grid orafter running for a period of time. Check the voltage and current parameters of F130 INV2_OCP_Failure the inverter AC output, and see if there is a suddenvoltage and current change when the fault occurs.
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Software detects overcurrent. Please check the DC PV module capacity configuration. If there are F137 BTA_OCP_Failure_Trip multiple alarms, please check if there is a short circuit on the DC input A, and contact supplier for help. Software detects overcurrent. Please check the DC PV module capacity configuration.
8.PRODUCT SPECIFICATION Model ST40KTL-M ST50KTL-M ST60KTL-M Max input power 48KW 50KW 60KW Max input voltage 1100V 1100V 1100V Start up voltage 160V 160V 160V MPPT voltage range /Rated 200~950V/620V 200~950V/620V 200~950V/620V voltage Max input current 36A+36A 36A+36A+36A 36A+36A+36A Number of MPPT...
LCD display,RS485(Standard 2pin plug and play terminal),WiFi/GPRS(Optional) communication 9.SOLAR INVERTER WARRANTY MANUAL MOSO offers 5-year warranty starting from the inverters delivering from the manufacturer’s warehouse. Warranty certificate represents a five year warranty service for mentioned products since the date of purchase.
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Below information is asked when claiming for warranty. a. Inverter’s Model. b. Inverter’s Serial No. c. Communication Method. d. PV Modules’ Model.
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