Answer / binod

THE FOLLOWING TEST ARE THE MINIMUM REQUIRED BEFORE CHARGING
A TR.
1)short cicuit test
2)opencircuit test
3)insulation test
4)magnetic core blance test
5)tan delta test
6)transformer oilo B.D.Vtest
7)silicagel color test
8)w/t&o/t functioning test
9)buchhols contact operation test
10)prv working test

why zero sequence impedance measurement is not applicable for single phase GT

0 Answers  

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in transmission line 11kv is step up or step down? why?

5 Answers  

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Terminal blocks is used for segregate the connections... There is any principle for terminal block..?

0 Answers  

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Which Motor used in Fan's Motor ?

3 Answers   Matsui Technologies,

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If load is 240 kw & pf is 0.8 lagging, than how to increase it from0.8 to 1.0(unit),which rating capacitor used, please give me Calculation. What is effact of consumer & suplier if pf is lagging or leading with on effect machines/ TF/GE etc.

6 Answers   L&T,

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WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

0 Answers   L&T,

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what is the actual difference betwen constructional details and constructional features?

2 Answers  

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Which is remain unchanged in transformer action?

6 Answers   NTPC,

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why we don't use air circuit breaker on H T line in place of vacuum circuit breaker ?

2 Answers   Jindal,

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where induction generator is used ?

1 Answers  

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the need of star to delta anddelta to star

2 Answers  

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I have 11KV/415V power distribution transformer. I have found unbalance current in LT (415V) side. Also observed that unbalance voltage (3V) at LV side due to HV side unbalance voltage. What should I check for this? Also, the same LV side load can run in balance on captive power.

1 Answers  

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