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User Manual
Step 2 Check the cable connection of the PV string for polarity correctness and ensure that the open
circuit voltage in any case does not exceed the inverter input limit of 1,100 V.
The multimeter must have a DC voltage range of at least 1100 V. If the voltage is a
negative value, the DC input polarity is incorrect. Please correct the DC input polar-
ity. If the voltage is greater than 1100 V, too many PV modules are configured to the
same string. Please remove some PV modules.
Step 3 If the inverter is configured with an optimizer, perform as follows. Otherwise, skip Step 4-7.
Step 4 Connect the PV+ and PV- of the optimizer to the positive and negative terminals in the junc-
tion box of the PV module respectively.
Do not connect the PV module to the OUT+ and OUT- of the optimizer. Otherwise,
the optimizer or PV module will be damaged, and the loss is not covered by the
warranty.
5 Electrical Connection
51
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