What is a Backup Relay ?

What is a  Backup Relay ?

Backup Relay Definition

A backup relay is an additional relay system that operates if the main relay fails, ensuring continued protection.

Function of Backup Relay

The primary function of a backup relay is to trip the circuit breaker when the main relay fails.

Reasons for Main Relay Failure

Main relays can fail due to mechanical defects, power supply issues, or problems in the CT/PT circuits.

Importance of Backup Relay

Backup relays provide an extra layer of reliability, essential for protecting expensive and high-voltage equipment.

Operation of Backup Relay

Backup relays are designed to act slower than main relays, stepping in only when the main relay fails.