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The following figure shows the open-circuit voltage limits at different altitudes. Before config-
uring the PV panels, need to take this derating curve in consideration under high altitude
situation.
figure 5-4 Open-circuit Voltage Derating Curve
5.6.2 Assembling PV Connectors
High voltage may be present in the inverter!
• Ensure all cables are voltage-free before performing electrical operations.
• Do not connect the AC circuit breaker before finishing electrical connection.
• Use MC4 DC terminals if the maximum input voltage is no more than 1,000 V.
• Use MC4-Evo2 DC terminals if the maximum input voltage is greater than 1,000
V. To purchase the MC4-Evo2 DC terminals, contact SUNGROW.
• Select appropriate DC terminals as required above. Otherwise, SUNGROW shall
be held no liability for the damage caused.
To ensure IP65 protection, use only the supplied connector.
step 1 Strip 7 mm–8 mm of the insulation from each PV cable.
5 Electrical Connection User Manual
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