Block Diagram of an Electrical Drives
Drive: A combination of prime mover, transmission equipment and mechanical Working load…
Protection of bus bars
The protection scheme for a power system should cover the whole system…
Generator protection
· The range of size of generators extends from a few hundred KVA…
Current Transformers(CT)s and Potential Transformer(PT)
Current transformers are generally used to measure currents of high magnitude. These…
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,…
Impedance Relay
The torque equation T, for such a relay the current actuates the…


