Answer / pillay

Most importantly the insulation and HV holding test is done on
all the installations.
on the tx former;winding insulation test,
ratio test, vector group test,impedence test, oil dielectric and
other test,
bucholtz relay test, all protective equipments operation test,the
switchgears insulation and conductivity tests along with pressure
tests on cables also . all tests have to meet the local
requirements or as relevant BS.

what role neutral plays in electrical circuit? If neutral is not there what will be the effect

1 Answers  

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If the capacitor bank is installed in switchyard say 132/22kv then on LT side say 22kv/0.433kv is it necessary to install capacitor bank for maintaining power factor. if pf is maintained on HT side then will that be maintained on LT side as well.if not then how&why??????/ please explain...........

3 Answers   MacLellan,

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1 KW = how many HP

3 Answers  

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what is IP55,IP65

2 Answers  

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Can we connect more than one NGR at a time of different rating of generators. what is advantage or disadvantage.

2 Answers  

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Is Indian railway uses 25000v ac or dc?

7 Answers  

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what is the differebt between ac and dc fuse?

0 Answers   IBM,

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what is diffential relay? testing proceure?and transformer reach Over load thet time differencilal relay operate or not ?

5 Answers  

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Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

0 Answers   Power Plant,

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i want to measure voltage difference between neutral and earth so i just simply use voltmeter. my question is that may i use this measure continuosly.or there are some electricity board restrication on that? or it creat some problem on my measuring device..?

2 Answers   NEEC,

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why we use low kv lightining arrester in line for example 9 kv using in 11kv

1 Answers  

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Which machine u will prefer to use at where flameble gases are comming out & why?

1 Answers   NTPC,

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