Self Balance Protection System of Generator: It necessarily consists of two cables connected to the two ends of each phase and the cables are passed through the circular aperture of…
Percentage Differential Relay Protection of Generator: This system, also called the Merz-Price protection system, is the most common type of protection used for stator windings against phase-to-phase or phase-to-ground faults.…
Difference between Static Relays and Electromagnetic Relays: The conventional electromagnetic relays are robust and quite reliable, but are required to operate under different forces under fault conditions. This leads to…
Zero Sequence Current Relay: This type of zero sequence current relay is similar to that of negative phase sequence relay as discussed in article Induction Type Negative Phase Sequence Relay.…
Induction Type Negative Phase Sequence Relay: This type of induction type negative phase sequence relay has similar construction as that of an induction type overcurrent relay. The difference lies only…
Negative Phase Sequence Relay: A negative phase sequence relay (or phase unbalance) is essentially provided for the protection of generators and motors against unbalanced loading that may arise due to…
Voltage Balance Differential Relay: In this voltage balance differential relay arrangement, two similar current transformers are connected at either end of the system element under protection (such as a feeder)…
Types of Circuit Breaker Mounting: There are four types of circuit breaker mounting, which are described below: Cubicle Type or Cellular Type: In this type of mountings the circuit breakers…