Recent Developments in Circuit Breakers Articles: DC Circuit Breaker : Light duty DC Circuit Breaker have been in use since long. However, with the latest developments in HVDC transmission there…
Conventional Circuit Breaker Articles: Automatic Switch Circuit Breaker: The Automatic Switch Circuit Breaker is the simplest circuit interruption device is the knife switch. By closing the switch against the action…
Theory of Circuit Interruption Articles: Arc in Circuit Breaker : Discharge in a.c. circuit breakers, generally in the form of an arc, occurs in two ways. When the contacts are…
Basic Components of Static Relays Articles Semiconductor Diodes in Static Relays: The pn junction has rectifying characteristics as shown in Fig. (10.1). If a source of emf is connected to…
Apparatus Protection in Power System Articles: Transformer Protection Types: Nature of Transformer Faults: Power transformers, being static, totally enclosed and oil immersed develop faults only rarely but the consequences of…
Feeder Protection Relay Articles: Types of Feeder Protection Relay: A composite transmission system may use one or more of the following types of Feeder Protection Relay. Overcurrent Protection: This is…
Circuit Breaker Testing Procedure: A preliminary check up of various equipment is made before the actual Circuit Breaker Testing Procedure commences. The correct values of resistance and reactance coils are…
Circuit Breaker Tester Classification: Circuit Breaker Tester can be classified into two main groups, viz. (i) type tests and (ii) routine tests. Type Tests: These are performed solely for the…