Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

1). What is the use of the negative phase sequence relay?The negative sequence relays protect generators and motors from imbalanced loading that might result from phase-to-phase faults.2). What is the differential relay’s operating principle?The phasor difference of two (or)more similar electrical variables needs to exceed a specific threshold for a differential relay to activate.3). Why is distance protection selected as primary protection for thetransmission lines over overcurrent protection?F