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6.5 AC Cable Connection
6.5.1 AC Side Requirements
Only with the permission of the local grid department, the inverter can be con-
nected to the grid.
Before connecting the inverter to the grid, ensure the grid voltage and frequency comply with
requirements, for which, refer to "Technical Date". Otherwise, contact the electric power
company for help.
AC circuit breakers should be installed on the output side of the inverter and the
grid side to ensure safe disconnection from the grid.
• Determine whether an AC circuit breaker with greater overcurrent capacity is re-
quired based on actual conditions.
• Multiple inverters cannot share one AC circuit breaker.
Residual Current Monitoring Device
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.
6.5.2 Installing the AC Connector
The inverter's GRID and LOAD terminals are integrated into one port, as shown below.
Grid is the three-phase-four-wire grid + PE connection (GR, GS, GP, GN, and GP).
Load is the three-phase-four-wire grid + PE connection (LR, LS, LP, LN, and LP).
step 1 Unscrew the swivel nut of the AC connector.
6 Electrical Connection User Manual
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