Answer Posted / mohammad
Earthing Switch is necessary to earth the conducting parts
before maintenance and also to provide deliberate
short-current while testing.This enables various tests to be
performed on the Switchgear or item of equipment, such as
testing the current Transformer of measuring the operating
time of breakers, without having to open the enclosure.
During normal operation the insulation is bypassed by a
short-circuit-proof link.
| Is This Answer Correct ? | 28 Yes | 7 No |
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