Power Factor by Two Wattmeter Method: When we talk about the power factor in three-phase circuits, it applies only to balanced circuits, since the power factor in a balanced load…
Star Delta Transformation Formula: While dealing with currents and voltages in loads, it is often necessary to convert a Star Delta Transformation Formula, and vice-versa. It has already been seen…
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…
Auto Reclosing Circuit Breaker Articles: Auto Reclosing Scheme: It is well realized that the transient faults which are most frequent in occurrence do no permanent damage to the system as…
Protection Principles and Components Articles: Methods of Discrimination in Power System Protection: Methods of Discrimination in Power System Protection are basically of two types: those which discriminate as to the…
Indirect Testing of Circuit Breaker: With the increase in the breaking capacity of the HV circuit breakers, it has become uneconomical and unpracticable to increase the short-circuit capacity of testing…
Direct Testing of Circuit Breaker: The Direct Testing of Circuit Breaker in a plant enables us to test under conditions largely representing those in actual network as well as tests…
Circuit Breaker Analyzer: Short Circuit Generator: This is of a special design having very low reactance in order to give the maximum short-circuit output of the Circuit Breaker Analyzer. The…