Answer / satya dev

Basicaly Transformers having two type of tests 1-
Manufacturing & 2- Field test, Manufacturing test are
described Above & Field tests are carried out during the
Commissioning at site.Field tests are given belwo..

Insulation Resistance Test- Phase to Phase, Phase to Earth,
Winding Resistacne Test.
Testing & setting of WTI & OTI.
Vector Group Testing.
Magnetinc Ballance Test
Ratio Test.
Knee Point Test.
Tan Delta Test ( This is Also IR test)
Hi Voltage Impulse Test (if Client requested)
etc...

Answer / amit ganorkar

ratio test,magnetic balance test,2 kv test,insulation
resistance test,resistance test,separate source
test,induced over voltage test,vector group test,no load
test,short circuit test, these are routine
test.temperaturise test,pi test,noise level test,tandelta
test these are customer requirement test

Answer / sumit shukla

short ckt test measure eddy current loss,hystresis loss
open ckt test measure omhic loss
back to back test

what is the speed of the darkness?

3 Answers   Wipro,

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1.What is the maximum transmission voltage in india & where it is located? 2.more information about indian power scenario.

4 Answers  

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what is the differn bitween RCCB &MCB

3 Answers  

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kva/kvr

2 Answers  

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We operate a 10 Mw facility and we have been experiencing several trips due to fluctuations on the MVAR? We have checked all issues related to the AVR and we have found all OK? Can anyone help us? The grid voltage, internal voltage, all regular parameters look ok. MVAR fluctuate and there it goes the unit? What could be happening? Thanks!

5 Answers  

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4 Answers   CESC, DCM,

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how can we change the supply voltage?

4 Answers   Areva,

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1 Answers  

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pls tell us AC plant are how do work and parts name with picture

0 Answers   Mukand,

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what is a relay?

31 Answers  

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Why are cables rated for 40 KA for 0.25 Sec fault current rating?

0 Answers  

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Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan

1 Answers  

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