Sungrow SG2500HV-30, Системное руководство

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Cables for one side should be of the same type and specification.
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Flame retardant and fire resistant cables are recommended.
Overloading operation of cables is strictly forbidden.
6.4 DC Connection
6.4.1 Checking before Connection
Check the following items before cable connections.
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Check the open-circuit voltage of the PV array to ensure the open-circuit voltage is
less than max. DC voltage of the inverter.
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Mark the negative and positive polarity of the cable.
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Check the PV array for possible ground fault.
Open-circuit voltage of the PV array should not exceed the max. DC voltage of
the inverter. The inverter may be damaged if otherwise.
If a ground fault is detected, remove it before performing any DC connection.
Strictly follow all the instructions when connecting the cables.
Observe all the safety rules specified by the PV array manufacture.
Start the DC connection only when all checks and measurements meet requirements.
6.4.2 DC Cable Connection
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DC wiring terminals are located at the bottom of the DC cabinet (shown by A).
System Manual 6 Electrical Installation