What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

2 Answers  

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what about the input current fan when regulator regulates to speed low?

1 Answers  

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what is the difference b/w single and three phase circuits?

1 Answers  

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neutral,ground & earth different b/w

2 Answers  

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what are the particle used along with silica gel in transformer breether,explain their functions.

4 Answers   ME, Oil India,

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what are the major difference between 3phase 3wire and 3phase 4wire trivector meter?

2 Answers   L&T, NTPC,

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Why insulation layer of a High Voltage cable is more than a current carrying cable?

3 Answers  

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phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

3 Answers   Areva, Kim Yew,

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How to find HT side and LT side(of a transformer),with the help of a voltmeter?

1 Answers   Odisha Power Generation Corporation OPGC,

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What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.

0 Answers  

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assume we are put both df/dt and vector surge relay in same bus the df/dt relay setting is +5 hz an -5HZ. we want operat the vector surge relay before the df/dt how i calculate the setting of the vector surge relay.

1 Answers  

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why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

2 Answers  

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