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Protection Of Alternators
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A 10 MVA, 11 kV, 3-phase star-connected alternator is protected by the Merz-Price balance-current
system, which operates when the out-of-balance current exceeds 20% of full-load current. Determine
what portion of the alternating winding is unprotected if the star point is earthed through a resistance of
9 . The reactance of the alternator is 2 .
system, which operates when the out-of-balance current exceeds 20% of full-load current. Determine
what portion of the alternating winding is unprotected if the star point is earthed through a resistance of
9 . The reactance of the alternator is 2 .
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