Answer Posted / ravi

Differential Protection is intended to protect the
transformer windings. For this purpose we need to arrange
the CTs on both primary and secondary side of the
transformer and connect both the secondaries in such a way
that whenever the fault level increases above the threshold
value then the the associted relay will trip the power
circuit.

What is the previous name of Cox's Bazar

2286

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explain different losses in a transformer.

1210

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What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

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What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

1974

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Meaning of ingrace protection for motor.for ex IPXY

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i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

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How to Design green buildings services? What is the advantage to design green building?

1853

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

2020

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previous year paper of ntpc bhel for degree in electrical enng

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1377

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Is potential difference materials property ..? if yes tnen how.. explain brifly.

2117

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