Popular Posts
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• The objective of power system protection is to isolate a faulty section of electrical power system from rest of the live system ...
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• The role of the building protection system is to protect it against direct lightning strokes. The system consists of: – - the ca... -
• Symmetrical fault current: If in a circuit mainly containing reactance, a short circuit occurs at the peak of the voltage wave, th... -
The short-circuit current from various sources is illustrated in figure 2-1. Since short-circuit current from rotating machines varies ...
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• Types of protection relays are mainly based on their characteristic, logic, on actuating parameter and operation mechanism. • Bas...
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• Interturn faults occurs in machines i.e, Transformers, Motors and Generators. An Interturn fault occurs due to the insulation break...
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• According different criteria there are different types of circuit breaker . • According to their arc quenching media the circuit...
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• When a fault occurs, the protection scheme is required to trip only those circuit breakers whose operation is required to isolate t...
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Lightning damages electrical and electronic systems in particular: transformers, electricity meters and electrical appliances on both r... -
• Fault Current flows in any part of the power system due to different types of short circuit conditions in the system. • There a...