Latest Protection Switchgear News
Restriking voltage and recovery voltage
It is the transient voltage that appears across the contacts at or…
Formation of arc during circuit breaking
The phenomena of Arc During opening of current carrying contacts in a…
Under Frequency | Negative Sequence Relay
Under Frequency Relay Frequency based relays can either be under frequency relay or over frequency…
Static relays
Advantages of static relays • Due to the amplification of energizing signals obtainable,…
Directional Over Current Relays
1. When fault current can flow in both the directions through the relay,…
NATURE &EFFECT OF TRANSFRMER FAULTS
A faults on transformer winding is controlled in magnitude by a) Source &…
