.

An NDR Relay, also known as a Neutral Displacement Relay, is designed to detect earth faults in unearthed or resistance-earthed electrical systems. It continuously monitors the displacement of the system neutral voltage and operates when an abnormal rise occurs due to an earth fault. By providing early fault detection, the NDR relay helps prevent equipment damage, insulation failure, and system instability. It is widely used in industrial and power distribution networks to ensure reliable and safe system operation.

Enquiry Now