What is the difference between AC and DC injection methods for rotor earth fault protection

0 Answers   Asian Alliance Insurance, NBVL,

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What is meant by term Back to back in HVDC transmission?

1 Answers   SSC,

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how Local Breaker Backup relay working?

1 Answers  

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How to calculate unit consumption on the basis of load. kWH=kwXhrs.is it correct? kw is motor load.What is unit consumption at 100% load, 50% load & on no load.

6 Answers   GIL,

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i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection

0 Answers  

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what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

2 Answers   ABB,

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critical losses of transformer

3 Answers   EEEC,

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wht do u mean by constant flux linkage theorem ?

3 Answers  

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How we calculate airgap between phases & terminal box of the transformer? any formulae.

1 Answers  

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the current which flows during lightening is ac or dc,,,,,,,,,,, WHY

6 Answers  

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what is the lightning arrester rating for 3.3kv system voltage

1 Answers  

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Whether earthmat designning is done only for sub station or it can be done for multy residential complexes also? What is the size, type & arrangement of the earth grid to be done?

1 Answers  

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