Answer / k.prakashchandra

It is for alternator and turbine has separate over speed
protection.

Answer / dhaval

over frequency is the protection of alternator because of
when frequency is high and at that time speed of alternator
is high so that protection of alternator.

What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.

1 Answers  

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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

0 Answers  

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how to find the starting current of the motor?

1 Answers   BOC,

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Testing report of Earthing of 3.15 MVa PTR.

0 Answers  

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Define working of prim mover governer in alternator?

1 Answers  

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why motors are rated in hp?

3 Answers  

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in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

0 Answers  

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what is diffrence between primary & secondry transformer?

3 Answers  

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

0 Answers  

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why only 26v dc is used in aircraft and 115v ac in aircraft.

0 Answers   Jet Airways,

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In an LT pole, the line voltage is 415V. How is it converted to 230V into the house via the service cable?

10 Answers  

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