Switchgear Protection

Fuse Selection Criteria

The fuse provides protection by melting away a thin metal link in the faulted circuit. The metal link may be of silver, copper, or nickel, silver being more common for long-term performance stability. The fuse body is generally filled with a sand-type filler (Figure 1) to suppress sparks when the fuse link melts and interrupts the

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Differential Protection of Generator & Alternator

The most common schemes employed for the protection of a three-phase generator stator windings from earth faults phase-to-phase faults make use of circulating current principle. In these protection schemes, currents at the two ends of the protected section are compared. Under normal conditions, these currents are equal became different on the occurrence of a fault in

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