Answer / yusuf

> Opening and Closing Coil Resistance measurement
> Contact Resistance Measurement. (This Ensures minimum
Voltage drop)
> Timing Test(Ensures Fault clearance time)
> IR Measurement(Ensure proper Isolation from Ground and
between Phases)
Other than these, H.V, Flash Test, Tan Delta are also done
in the factory

Answer / manisand1

Above all some more test is to included i will clear this
in next time.

Is there any design in the world a 220 KV transformer without breather …??????

2 Answers  

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Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

0 Answers   Prism Cement,

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which motor is used in electric train...???????

27 Answers   ESPL, IOCL,

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What is In (current rating) shown on the MCCB? Is this full load which can withstand by the circuit breaker

4 Answers  

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what is the difference between potential transformer and capacitive voltage transformer?

1 Answers  

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I am completed DEEE in tamilnadu, now i am working in andhrapradesh with 2.5 year experience in relavent field. capacity of the tranformer is 11KV, 1MVA Transformer, i am eligible for getting c licence in andhrapradesh pl help me.

0 Answers  

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we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

0 Answers   NTPC,

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how to set the transformer differential relay

1 Answers   Divis Laboratories,

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which transfofrmer oil break down voltage strength get will be more if oil sample taken from bottom of tank or oil sample taken from top of the transfomer tank.

2 Answers   NPCIL,

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3 ph motor connected in star delta starter. when we start the motor it run in star but when in is going in delta it trips the main incoming supply. why?

3 Answers   Bajaj Hindusthan,

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how we identify AC or DC machine at the time of seeing, with out use of name plate?

4 Answers  

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What are the disadvantages of autotransformer?

0 Answers  

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