Answer / tanmay kumar

GAS PRESSURE-7MPA in normal condition.

Answer / lohit

normal gas pressure
6 kg/cm2 at ambient
temp 20c° operating
pressure 5.2 kg/cm2

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

1 Answers  

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can we use optical fibre to electrical power transmission ?

1 Answers  

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why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

0 Answers  

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why the transformer primary and secondary windins vector groups vary? why it is something like Dy11 and not as Dy or Yy...

2 Answers  

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Why we are using air gap magnetic condutors

2 Answers   Ford, IOCL,

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For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 Answers  

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why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

10 Answers   ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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what is the use of vcb & isolator in substation?

4 Answers  

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If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

0 Answers  

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SSC JE ELECT.

1 Answers   CPWD, SSC,

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Why machines are avoided to work is saturation region of B- H curve?

3 Answers  

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