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• In the systems with multiple inverters, protect each inverter with a separate
circuit breaker.
• Never connect a load between the inverter and the circuit breaker.
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With an integrated universal current-sensitive residual current monitoring unit included,
the inverter will disconnect immediately from the mains power once a fault current with
a value exceeding the limit is detected.
However if an external residual current device (RCD) is mandatory, the switch must be
triggered at a residual current of 300 mA (recommended), or it can be set to other
values according to local regulations. For example in Australia, the inverter can use an
additional 30 mA (type A) RCD in installations.
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If multiple inverters are connected in parallel to the grid, ensure that the total number of
parallel inverters does not exceed 5. Otherwise, please contact SUNGROW for technical
scheme.
5.5.2 Assembling the AC Connector (< 15 kW)
The AC terminal block is on the bottom of the inverter. AC connection is the three-
phase-four-wire grid + PE connection (L1, L2, L3, N, and PE).
Step 1 Unscrew the swivel nut of the AC connector.
Step 2 Take out the terminal plug from the housing.
User Manual 5 Electrical Connection
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