Unformatted text preview: because a circuit breaker can close circuits, as well as break them without replacement and thus has
wider range of use altogether than a fuse. Features
16.2 Essential Features of Switchgear
The essential features of switchgear are :
(i) Complete reliability. With the continued trend of interconnection and the increasing
capacity of generating stations, the need for a reliable switchgear has become of paramount importance. This is not surprising because switchgear is added to the power system to improve the reliability. When fault occurs on any part of the power system, the switchgear must operate to isolate the
faulty section from the remainder circuit.
(ii) Absolutely certain discrimination. When fault occurs on any section of the power system,
the switchgear must be able to discriminate between the faulty section and the healthy section. It
should isolate the faulty section from the system without affecting the healthy section. This will
ensure continuity of supply.
(iii) Quick operation. When f...
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- Spring '12
- Electrical Engineering, Short circuit, Fuse, Circuit breaker