63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?

0 Answers   GSECL, L&T,

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During the transients in alternator,the mechanical power input remains almost constant while the electrical power output changes significantly.Why?

1 Answers  

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What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

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what is the problem when i want to close a circuit breaker by local position it closes well.but when i close it in remote position it trips

0 Answers   KPCL, MDIM,

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Can Induction motor run at over rated speed? ( 15oo rpm is rated speed for 50HZ. is it possible to ride 3000 RPM with same motor with the help of VVVFD for continues ride of 100HZ)

3 Answers   Equate,

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how we are desining 63.5 ohm resistor for NGR of alternator?

1 Answers  

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what is deferens between HT&LT DG

2 Answers  

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how to syncronize two dg sets

3 Answers  

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what is settable hystersis protection? If any body knows plz kindly post the answer..

0 Answers  

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why are transformer rating in MVA

2 Answers   Suzlon,

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Why PT burnts?

2 Answers  

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What is the suitable rating of MCB used for 1.5 Ton A.C & why?

4 Answers  

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