Lsis Co., Ltd.

Ls Electric Co., Ltd.

Sunggyu Nam

Jongung Lim

Youngmo Yang

The present disclosure relates to an earth leakage circuit breaker and a method for controlling the same. The earth leakage breaker includes a zero-phase current detection unit for detecting a zero-phase current generated in a zero current transformer formed in three-phase electrical lines; a voltage detection unit for detecting a voltage from each of the two electrical lines; a trip unit for tripping contact points between the two electrical lines and a single-phase load when a trip signal is inputted; and a control unit which, when the zero-phase current is detected by the zero-phase current detection unit, detects an electrical line in which the voltage has dropped by a predetermined level or more, and generates and outputs the trip signal to the trip unit when the electrical line in which the voltage has dropped by a predetermined level or more exists.

Earth leakage breaker and method for controlling earth leakage breaker

An earth leakage circuit breaker and a method of controlling the same are disclosed. An earth leakage circuit breaker according to the present disclosure can detect a type of leakage current and output the type of the leakage current in various forms such that a user can recognize the type of the leakage current. Therefore, the user can easily recognize whether or not the leakage current has occurred and the type of the leakage current. This may facilitate the user to recognize the cause of the leakage and take an effective measure for preventing an accident.

Growing community of inventors

Anyang-si, South Korea

Sunggyu Nam