File:Circuit breaker selectivity.JPG

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Description
English: Selectivity of circuit breakers.
  • How to beat out circuit breaker only to fault line?
  • -For this action, short circuit current of group lines should be smaller than applying current of main breaker, but more than applying current of group breaker.
However, nobody of designers follow this rule and they put as fat as possible wires to decrease voltage drop - such way group breaker may beat out with main breaker.
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Author Dmitry G
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current22:00, 18 March 2011Thumbnail for version as of 22:00, 18 March 2011755 × 1,490 (66 KB)Dmitry G (talk | contribs){{Information |Description ={{en|1=Selectivity of circuit breakers. *How to beat out circuit breaker only to fault line? *-For this action, short circuit current of group lines should be smaller than applying current of main breaker, but more than ap

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