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How the main bus bar rating of 400kV switchyard with one
and half breaker scheme is calculated.
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Answer Posted / bhadresh dhora
One and Half breaker means.... Two breaker serve the pupose of three bays. Example : For Large capacity generator Two breakers one Main and another Middle.. Both breaker function Generator, Line and option with one of them can be isolated that is three pupose and two breakers i.e 3/2 = 1.5 i.e One and Half breaker.
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