list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

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What is the formula to calculate the rating of a three phase air circuit breaker

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What is difference between A.C & D.C Resistance ?

4 Answers  

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What is the control action?

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In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

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How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

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why any Elelctricity board insist not to change the buren of their metering CTs or PTs for metering purpose? as a example elect. board not accepted that any customer change their metering CT or PT core burden from 5VA to 15VA.. why?

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what is elcb

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Should the neutral earthing of 33/11KV D-S transformer, be connected to the earth grid?(Yes/ NO) why?

1 Answers   HAL, Vijai Electricals,

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how to calculate earth resistat in earthpit with earth testing kit?

2 Answers  

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what is hormonics. how it is generated & what are the problem faced by that.

5 Answers   APC,

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How will you determine the rating of a motor for continuous duty variable load motor applications?

1 Answers  

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