Answer / pk.shivakumar

@ 2.5 mm gap 6 six readings average should be min. of

30kV for 11kV to 66 kV
40kV for up to 110 kv
50kV for above 230 kV

Answer / k.prakashchandra

Minimum bdv in kv - 60 for 170kv and above class , 50 for
for 72.5 to 170 kv , 40 for below 72.5 kv

Answer / nagarjun

The break down voltage of a transformer is should greater than or raising to 75kv.

Answer / dattatray

breakdown voltage of the transformer oil will be 3 times of applied voltage.

Answer / priyanka r

According to standards it id 12kV/mm

how to do the ductor test?

0 Answers  

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can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.

0 Answers   NTPC,

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are there rmu for 3 transformer?

0 Answers   OSC,

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how i meggar value of 11kv alternator winding.and with meggar.

1 Answers  

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Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

0 Answers  

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-What shall be short circuit current of LV switchgear for a 1000 kva, 11.415kv, 3 phase tranformer with 5% reactance.

0 Answers  

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What is icu and ics in Acb and how many time icu or ics passes from breaker?

0 Answers   Engineering Vision,

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I want to know what is the short circuit level when 8 NOS 2000 kVA, 415v, 50hZ generator connected in paraller

1 Answers  

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What are all the conditions to protect generator & turbine in thermal power plant?

1 Answers   Power Grid,

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What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

0 Answers  

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what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?

0 Answers   Aditya Birla,

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why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?

0 Answers  

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