Restricted Earth Fault Protection (64R) in Resistive Grounded Transformer

Transformer is considered as vital equipment in transmission and distribution network. Power Transformer is typically considered as the costliest equipment for any substation/switchyard project and is expected to serve lifecycle of 35years. Considering significant cost associated with power transformer and relatively long outage time in case of failure of same equipment, it is emphasizing the importance of implementing effective protection strategies to prevent or mitigate such events.