why dimmerstate always connected in star connection? what will happen if it connected in delta?

0 Answers  

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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 ) ?????

2 Answers  

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lightning current is ac or dc..?????

7 Answers  

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what is the meaning of 0.5ohm Resistance

0 Answers   Vardhman,

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What is the purpose of SSVW, IOVW, DVDF Tests in transformer? Those who are answering, pls send mail ids also.

1 Answers  

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What is FM200 Gas??Applications........

0 Answers   Emerson,

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an electric bulb or lamp can operate on ac and dc, if yes then why

5 Answers  

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what happen if the parallel generator phase angle shift by 1 degree in manual mode

0 Answers   EEEC, MEC,

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how to calculate the no load current in transformer?

0 Answers  

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string efficient is 100% what is the voltage across the each disk?

1 Answers  

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in railways why we use the power in 10,20 30kv,why not in the multiple of 11kv

2 Answers  

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What is correction factor in Tan delta test?

1 Answers  

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