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Electrical Connection
Step 5: A "Click" will be heard if it is connected correctly. Gently pull the cable backward
to ensure firm connection. Tighten the swivel nut clockwise. Verify that the PV
connectors have the correct polarity before connection.
Click!
Click!
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Figure 8-20 Securing the PV cable
Step 6: Use a voltage measuing device which complies with the local regulation to
measure the positive and negative voltage of the assembled PV connectors. Make
sure the open circuit voltage does not exceed the MPPT voltage range of the
inverter. (650 V for 5.5 kW and 8.3 kW inverter; 950 V for other models)
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Figure 8-21 Measuring the voltage of PV connectors
NOTICE!
• If the voltage reading is negative, it indicates an incorrect DC input polarity.
Please check if the wiring connections on the measuring device are correct or PV
connectors are not mistakenly connected.
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