The Over-Voltage Protection (OVP) is a resettable overvoltage protection, which is looped to protect the on-board battery from overcharging in case of failure of the regulation by the regulator (rectifier) ??in the charging line. The trigger voltage is set to protect LiFePO4 batteries.
The OVP has a built-in relay (normally closed contact) which disconnects the charging current from the battery when the tripping voltage is exceeded. If the battery voltage falls below 12V, the relay opens again and the battery can be recharged. The supplied reset button with LED can be installed as a control lamp to indicate the tripped state and at the same time as a reset button in case of accidental tripping of the fuse.
The OVP should be installed as close to the battery as possible. The charging cable must be disconnected from the battery and then the OVP blue cable connected to the negative terminal, the red cable to the positive terminal and the yellow cable to the disconnected charging cable.
AIRBATT OVP overvoltage protection, reset button with LED