Motor Protection: Motor Protection - There is a wide range of motors in existence for various purposes. However, the fundamental problems affecting the choice of protection are independent of the…
Prime Mover Protection: In the event of prime-mover failure the machine starts motoring meaning thereby that it draws electrical power from the system and drives the prime-mover. This condition imposes…
Generator Faults: Generator faults can be considered under the following heads. (a) Stator Faults: These include the following: Phase-to-earth faults. Phase-to-phase faults. Inter-turn faults. Most faults occur in the stator…
Directional Earth Fault Relay: In the case of Directional Earth Fault Relay the angular relationship of residual current and residual voltage is independent of the faulted phase and is governed…
Distance Relays Types and their Applications: In applying relays to a transmission system it is necessary to state the relay characteristic in the same terms that the system conditions are…
Important Questions in Electrical & Electronics: IMPORTANT QUESTIONS OF AC DISTRIBUTION IMPORTANT QUESTIONS OF CIRCUIT BREAKERS IMPORTANT QUESTIONS OF DC DISTRIBUTION IMPORTANT QUESTIONS OF DISTRIBUTION SYSTEMS IMPORTANT QUESTIONS OF ECONOMICS…
Components of Protection System: Some of the more commonly used Components of Protection System are Relays Circuit Breakers Tripping and Other Auxiliary Supplies Current Transformer (CT) Voltage Transformers (VT) Linear…
Important Questions of AC Distribution: 1. How does a.c. distribution differ from d.c. distribution ? 2. What is the importance of load power factors in a.c. distribution ? 3. Describe…