What is Earth Leakage Relay | ELR?
An Earth Leakage Relay (ELR) is a protective device used in electrical installations to detect the leakage of current to the earth (ground). It is primarily designed to prevent electrical shock hazards and to minimize damage to electrical equipment caused by earth faults or ground faults.
Here’s how it typically works:
- Sensing: The ELR continuously monitors the electrical circuit for any imbalance between the outgoing current and the returning current. If there’s a discrepancy, it indicates that some current is leaking to the earth, which could potentially be dangerous.
- Detection: When the ELR detects such an imbalance,... Read More
