G Isolation Protection Device - Circontrol Raption 50 Gen2 Series Service Manual

Raption 50 Series Service Manual
G Isolation protection device
The ISOMETER isoEV423 monitors the insulation charging stations for electric
vehicles for DC between 0 and 1100Vdc.
This device protects both DC connectors in the output side. It is measuring constantly
the resistance between positive wire to the ground and negative wire to the ground.
If the resistance value is very low it will generate an alarm as it is needed a high
value to keep the safety.
Operation LEDs
Power ON LED: It will be in green if the device is power up. It will be flashing if
there is some connection error.
Alarm LED, "AL1": Lights when alarm value AL1 has activated or overvoltage
alarm (flashes during connection error).
Alarm LED, "AL2": Lights when alarm value AL2 has activated or undervoltage
alarm (flashes during connection error).
Alarm 2 advices that resistance value is getting closer to the limit value. It
notifies the Mode 4 board but does not stop the operation of the Charging Station.
It is just a warning
It is the Alarm 1 the one that stops Charging Station operation because there is
not enough resistance to ensure the isolation protection.
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