Answer / mohamed sabry
No, because it can't contain the arc if opened under load
or short circuit.
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What is the high tension lines voltage and low tension lines voltage?33 kv is high tension line or low tension.
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At full load wat is the motor p.f And at no load will is the motor p.f?
please send me jindal previous aptitude and technical question and answer.my email id is email@example.com
the need of star to delta anddelta to star
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1)Explain why the cradle guard is used on railway crossing in overhead line construction?
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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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