Smartgen HGM400N Series User Manual page 35

resistance-capacitance return circuit (when coils of relay has AC current), in order to prevent
disturbance to controller or others equipment.
4) 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 correct. Otherwise, the collected current and active power
maybe not correct.
Note: 1. ICOM port must be connected to negative pole of battery.
2. When there is load current, transformer's secondary side prohibit open circuit.
5) Withdraw Voltage Test
When controller had been installed in control panel, if need the high voltage test, please disconnect
controller's all terminal connections, in order to prevent high voltage into controller and damage it.
HGM400N Series Genset Controller
HGM400N Series Genset Controller User Manual
2017-04-21 Version 1.2 Page 35 of 36