SD-BD-04-03/Rev.09/14-03-68

The protection system comprising detecting earth leakage current from the main input to the output or lantern using the principle of detecting line current and neutron simultaneously by using the coils of a balanced current transformer as a fault detector (Core balanced current transformer or CBCT) and transmitting signal input to earth leakage circuitry with internal output contacts to turn off and turn on the lantern automatically. When there is electric current flowing from the wire to the High Pressure Sodium lamp, Fluorescent lamp, or LED light bulb. The relay will immediately cut off electricity from the main input of the lamp circuit and automatically reconnect the circuit again when there is no more power, or by setting a delay time within itself (Automatic Re-closer)