Answer / pavan

The value of the NGR to be inserted in the cicuit can be
calculated by the simple formula

R = V / (√3 * I)

Where V is the System Line voltage in Volts
I is the value of the fault current to be limited in your
case it is 50A.

In general practice the fault current is limited to the
full load rating of the largest equipment available in the
system.

why capacitive load is not used in routine life????any reason is there ??????

0 Answers  

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in the Distribution system .which one is Most Economically used by Power Engineer ? a)3 Phase3 wire System or b) 3Phase -4wire System

6 Answers   APTransco,

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How wti of transformer works?

5 Answers   Vedanta,

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What is BUCKBOOST TRANSFORMER and Operation of Buckboost transformer?

4 Answers   Voltamp,

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why booster transformer is used in sumpners test conducted on transformer????

0 Answers   Cooper,

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which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

2 Answers   Bhel,

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How to reduce -234126219.6403 MVAr generation and by what?

0 Answers  

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what is power factor when in view of a lineman

3 Answers   KSEB,

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As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

0 Answers   NAL,

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What is the important precuations need tocarried out while working with Electrolite in Battery PM?

0 Answers  

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what is the harmonics.

3 Answers   DLF,

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 Answers  

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