why two over current realy used in vcb.

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why two over current realy used in vcb...

Answer / balamurugan

we need answer for their.

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why two over current realy used in vcb...

Answer / shahid

vcb or any no need 2 relays 1 and only enough.
or system designer can put 2 one master and other slave to
shore tripping but not only vcb can be all types of cb.

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