5.3 5.3 Connect grid side of inverter (AC-Output)Connect grid side of inverter (AC-Output)
Follow the national rules and regulations for the installation of external relays or circuit
breakers!
A residual current monitoring unit (RCMU) is integrated into the inverter. It detects leak-
age currents above 300 mA and disconnects from the grid for protection. For external
Residual Current Devices (RCD), the rated residual current should be 300 mA or higher.
Connect the inverter to the AC power distributor or the power grid using AC power
cables.
Each inverter must have its own circuit breaker.
Do not connect any consumers between the inverter and circuit breaker!
The AC disconnecting device must be easily accessible.
Inverter AC side should connect a three phase circuit current to ensure inverter can
becutowithutilitygridforabnormalcondition.
The AC cable need to meet the requirement of local grid operator.
Open the wiring boxOpen the wiring box
Do not open the front cover of the inverter.
Beforeopenthewiringbox,pleaseensureDCandACpoweriso.
Prevent rain or snow from entering the connection box.
Don’t leave any items inside the connection box.
1. 1. Use M6 screw driver to unscrew the two screws on the wiring box.
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Electrical Connections