Research on Limitations of Overcurrent Safety Protection of Miner's Lamp Protector

The main function of miner's lamp protector is cutting off fault current immediately when a fault current happens in the power supply's external circuit in order to get power protected.The protector currently used has limitations in protection of current fault.This paper makes analysis of the essence of existing problems and potential risk in current protection of miner's lamp protector through the theoretical and experimental analysis,and the countermeasure was researched.