IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF
THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO
POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF
CURRENT I SHOULD USE WHICH TYPE OF CABLE?
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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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34 Answers ACC, Bhel, ECI Engineering and Construction, NTPC, SBL, Senthur Power Services,
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