Earth Leakage Circuit Breaker Working

An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock.

Earth leakage circuit breaker working.

Basically elcb is used where the earth impedance is high. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago. Current earth leakage current earth leakage circuit breaker current elcb. Means it detects the earth leakage current and.

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. If any current leaks from any electrical installation there must be any insulation failure in the electrical circuit it must be properly detected and prevented otherwise there may be a high chance of electrical shock if anyone touches the installation an earth leakage circuit breaker does it efficiently. Read more working principle of earth leakage circuit. It detects small stray voltages on the metal enclosures of electrical equipment and interrupts the circuit if a dangerous voltage is detected.

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. Early earth leakage circuit breakers are voltage detecting devices which are now switched by current sensing devices rcd rccb.