why dc source used for HV breakers and Relays operation?
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Answer / rams dharavath
The direction and magnitude flux of d.c coil remaining the same.DC coils give accurates and better lifting magnets and DC coils having no hystrises losses and heating problems.
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Answer / kannan
While we will use ac supply for HV and Relays following
disadvantages are available.
1.Tripping feedback can not see.
2.ac source is variable source.
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