NEUTRAL GROUNDING TRANSFORMER, METHOD THEREFOR, AND DEVICE FOR PREVENTING ELECTRIC SHOCK IN CASE OF SUBMERSION BY USING SAME

摘要

The present invention provides a neutral grounding transformer, which uses a neutral grounding method from a single-phase two-wire low-voltage power distribution method, a method therefor, and a device for preventing an electric shock in the case of submersion to prevent a breaking operation of an earth-leakage circuit breaker by allowing exposed terminals of an electrical device to be submerged nearly at the same time while using the neutral grounding transformer and the method therefor. To this end, the device for preventing an electric shock in the case of submersion, according to one embodiment of the present invention, can comprise: a transformer for supplying a voltage by using the neutral grounding method in the single-phase two-wire low-voltage power distribution method; an earth-leakage circuit breaker connected to power outputted from the transformer; and a breaking operation prevention unit for preventing a breaking operation of the earth-leakage circuit breaker by allowing an exposed plus terminal and an exposed minus terminal connected to the earth-leakage circuit breaker to be submerged within a preset time difference.