Answer Posted / jamal2009

by interconnecting the earth pit the earth resistance can
be drastically reduced as well as the reliablity of
earthing will also increase ie in case of isolation of
conductors from one earthing electrode the fault current
will pass through the other electrode

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ult of expression 'document.FrmQF.myem

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generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

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I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

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HOE WE CAN IMPROOVE BY USE OF CAPACITOR

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what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

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