Sungrow SG1K5TL-31, Руководство пользователя

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Electrical Connection
5
35
5.5.3
DC Wiring Procedure
Step 1: Assemble the DC cables to the corresponding connectors at the inverter side.
See “5.5.2 Assembling DC Cable to Connector”.
Step 2: Manually rotate the DC switch at the bottom of the inverter to the “OFF”
position.
Step 3: Check the connection cable of one PV string for the correct polarity and that
the maximum input voltage does not exceed 450V.
Step 4 : Measure the DC voltage between the positive terminal of the PV string and
Earth and the DC voltage between the negative terminal of the PV string and Earth. If
the two voltages are constant and not zero, there is an insulation failure somewhere in
this PV string.
Step 5: Plug the DC positive and negative connector into corresponding terminals. If it
makes a clicking sound, DC connector has been attached to the terminals.