Smartgen HGM400N Series User Manual page 37

3) AC Input
HGM400N series controller must be connected to outside current transformer. And the current
transformer's secondary side current must be 5A. At the same time, the phases of current transformer
and input voltage must be correct. Otherwise, the collected current and active power may be not
correct.
NOTE:
a) ICOM port must be connected to negative pole of battery.
b) When there is load current, transformer's secondary side is prohibited to open circuit.
4) Withstand Voltage Test
When controller has been installed on control panel, if it needs to do the high voltage test, please
disconnect controller's all terminal connections, in order to prevent high voltage entering controller and
damaging it.
HGM400N Series Genset Controller User Manual Page 37 of 38