what would be the earth to neutral voltage in industries? if it is not main Taine then what will happen?

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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...

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This is about the recent problem that we have faced in our project site. We have 6/7.5 MVA. 66/11kV three phase star - star power transformer. The neutral was solidly connected to the earthing mat. But because of high resistance of earthing mat (130 ohm on LV and 180 ohm on HV), one day LV side neutral earthing conductor melted and we had a huge damage. Can any one plz tell me what might happen when we connect power transformer neutral to the earthing mat which has high resistance (>100 ohm ) ?????

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Explain the operation of damper winding

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what is the role of energy meter in distribution system ?

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what happen if i change the polarity of ac when it is connected with motor

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What is the speed of 3 phase IM(Induction motor) at no load? How will the Motor meet the increased load(Explain through fundamental)?

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What is an alternator impedance value?

0 Answers   Orchid,

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which one is rotating transformer-single phase induction motor or 3 phase squirrel cage motor?

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What is the starting current of a motor?

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What is the purpose of REACTOR in GIS substation?

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What is the difference between AC voltage and DC voltage?

6 Answers  

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