1)how many types of earth? 2)how many types of megger and how to select that range? how much time taken for megger calibration( we r using megger)

1 Answers  

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what is pressure relief valve in D.G ?state its function?

3 Answers  

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how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1 Answers   Bhel, Indorama, Power Grid,

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Whats changes in Transformer Oil BDV in changes in temp or Climate?

2 Answers   TATA,

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Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

0 Answers  

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what is the difference between earthed cables and unearthed cables

2 Answers   Bhel,

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2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

0 Answers  

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what type of motor is used in washing machine

8 Answers  

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if vcb make contact but output notreach give the reason?

2 Answers   VVF India,

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what will happen if transformer given dc input

5 Answers  

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what are the effects when the frequency is decreased in any ac machine

1 Answers  

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what iz second and fifth hormonics please explain

1 Answers   Satia,

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