Electrical Earth Leakage Circuit Breaker Diagram. 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. Earth leakage circuit breaker or elcb.
The earth leakage circuit breakers are used in applications to prevent electrical shock and electrical fires that are caused by a short circuit or overload in the control panel with an automatic shut off when leakage is detected. The discussed earth leakage circuit breaker diagrams will monitor the leakage current level of the earthing line of your house electrical sockets and will trip the appliances as soon a fault is detected. An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock.
Operational power is applied to the terminal a 1 and a 2 of the elr and the cbct is connected to the terminals t 1 and t 2.
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. An voltage elcbs were first introduced about sixty years ago and current elcb was first introduced about forty years ago. This circuit breaker identifies tiny stray voltages on top of the electrical equipment with a metal enclosure disrupts the circuit if a hazardous voltage is identified. An earth leakage circuit breaker elcb is a safety device used in electrical installations with high earth impedance to prevent shock.
