Posted inProtection Switchgear Steady State Stability: Posted by admin August 11, 2021 Equilibrium speed of motor-load system can be obtained when motor torque equals the load torque.…
Posted inProtection Switchgear Dynamics of Motor Load System Posted by admin August 11, 2021 A motor generally drives a load (Machines) through some transmission system. While motor always rotates,…
Posted inProtection Switchgear Testing of circuit breakers Posted by admin August 11, 2021 Primary injection test  For primary injection testing, high current is injected on the primary side…
Posted inProtection Switchgear vacuum circuit breakers Posted by admin August 11, 2021 In this breaker, vacuum is being used as the arc quenching medium. Vacuum offers highest…
Posted inProtection Switchgear SF6 circuit breaker Posted by admin August 11, 2021 At this point we are aware that the medium in which arc extinction of the…
Posted inProtection Switchgear Oil circuit breakers Posted by admin August 11, 2021 Types Of Oil Circuit Breakers  Oil circuit breakers can be classified into following types:  1)…
Posted inProtection Switchgear Air blast circuit breaker Posted by admin August 11, 2021 This type of circuit breakers, is those kind of circuit breaker which operates in air…
Posted inProtection Switchgear Rating of Circuit Breaker Posted by admin August 11, 2021  The rating of a circuit breaker includes,  1)                         Rated short circuit breaking current.  2)                         Rated short circuit making current.…
Posted inProtection Switchgear current chopping Posted by admin August 11, 2021 Current chopping is a term that came to our vocabulary with the advent of vacuum…
Posted inProtection Switchgear Resistance switching Posted by admin August 11, 2021 Â To reduce the restriking voltage, RRRV and severity of the transient oscillations, a resistance is…