4
.
9
Ground
Connection
Remove the screw on the ground terminal and secure the cable with a screwdriver.
Figure
4
.
16
Inve er ground protection
4
.
10
External AC
Circuit Breaker
and Residual
Current Device
Please install a circuit breaker to ensure the inve er is able to disconnect from grid safely.
The inve er is integrated with a RCMU, however, an external RCD is needed to protect the
system from tripping, either type A or type B RCD are compatible with the inve er.
The integrated leakage current detector of inve er is able to detect the real time external
current leakage. When a leakage current detected exceeds the limitation, the inve er will be
disconnected from grid quickly, if an external residual current device is connected, the
action current should be 30mA or higher.
30
29
ROOFTOP SOLAR INVERTER
INSTRUCTION MANUAL