Earth Leakage Circuit Breaker Working
Earth leakage circuit breaker or elcb.
Earth leakage circuit breaker working. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago. Basically elcb is used where the earth impedance is high. Because of high earth impedance the voltage difference between the metallic part of the installation and earth. Current earth leakage current earth leakage circuit breaker current elcb.
Early earth leakage circuit breakers are voltage detecting devices which are now switched by current sensing devices rcd rccb. Forty years ago the first current eclbs were introduced and about sixty years ago the first voltage eclb was introduced. For many years the voltage operated elcb and the differential current operated elcb were both referred to as elcbs because it was a simpler name to. Generally the current sensing devices termed as rccb and voltage detecting devices named as earth leakage circuit breaker elcb.
An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock. An earth leakage circuit breaker elcb is a safety device used to directly detect the leakage current to the earth from an installation and cut the power supply. Means it detects the earth leakage current and.