the inverter in operation.
● Please do not place inflammable and explosive materials around the WIT Inverter.
● The maximum open-circuit voltage of each string should not exceed 1100Vdc.
● Ensure that the following conditions are met; Otherwise, fire hazard or inverter
damage may occur. Growatt is not liable for the consequence and it is beyond the
warranty scope.
NOTE:
1. The solar irradiance on the PV modules generates voltage and high voltages presented in the PV
strings connected in series could be fatal. Therefore, shield the PV modules from sunlight before
connecting the DC input power cable and ensure that the DC switches on the WIT Inverter are
OFF.
2. The PV modules connected in series should be of the same model.
3. The maximum short-circuit current of each PV string must be lower than or equal to 40A.
4. The total panel power should not exceed twice the WIT Inverter input power.
5. For optimal system configuration, it is recommended to connect two DC inputs with an equal
number of PV modules.
Fig 6.5 PV terminals
Procedure for connecting cables on the PV side:
1. Open the right cover plate of the WIT inverter, the position of which is shown in Fig 6.1;
2. Strip 6-8 mm of the insulation layer of the DC cables.
3. Insert the exposed core wires into the crimping area of the wiring terminal and crimp them
using a crimping plier;
4. Route the cable through the cable sealing sleeve and insert the insulation sleeve until it snaps.
Slightly pull the cable back to ensure that it is securely connected. Then tighten the locking nut;
5. Insert the positive and negative connectors of the PV modules to the corresponding terminals of
the inverter. For the maximum input current of different models, please see Table 6.1. For the
cable specifications, please see Table 6.2.
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