Negative Sequence Relay: Negative Sequence Relay is used to protect the alternator/generator from unbalance loading and negative sequence component. The negative sequence current flows in the generator winding due to phase to phase short circuit. The negative sequence currents cause the overheating of generator/alternator/motor/transformer’s winding. Negative sequence relays are generally used to give protection to … Continue reading Negative Sequence Relay Operation 59_2