Why is the earth fault relay connected to the Yellow Phase?

4 Answers  

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why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

0 Answers  

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what happen if we give square wave instead of sine wave to the transformer

8 Answers  

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anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

0 Answers  

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What is open delta Xformer? It's adavntages & Use?

0 Answers  

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what is the difference between delta-delta, delta-star transformer???

3 Answers  

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why we are using in reverse power relay in generator singranizing

1 Answers   Dalkia,

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please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

0 Answers   Al Rasikh,

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how does circuit breaker works

1 Answers  

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why capacitor is not discharged phase to body

1 Answers  

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In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

0 Answers   HAL,

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what does happen if generator frequency fall in running condition & what should require immediately

4 Answers  

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