To prevent the mal operation of a differentially connected relay while energizi

To prevent the mal operation of a differentially connected
relay while energizing a transformer, the relay restraining
coil is baised with
(a)second harmonic current
(b)fifth harmonic current
(c)third harmonic current
(d)seventh harmonic current

Question Posted / jignesh619

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To prevent the mal operation of a differentially connected relay while energizing a transformer, th..

Answer / enggrashmi

2nd harmonic

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16 Yes

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To prevent the mal operation of a differentially connected relay while energizing a transformer, th..

Answer / k.prakashchandra

b) fifth harmonic

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4 Yes

2 No

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