Answer / mahmood ahmed

Earth affects the calculation of capacitance of three-phase
lines as its presence alters the electric field lines.
Usually the height of the conductors placed on transmission
towers is much larger than the spacing between the
conductors. Therefore the effect of earth can be neglected
for capacitance calculations, especially when balanced
steady state operation of the power system is considered.
However for unbalanced operation when the sum of the three
line currents is not zero, the effect of earth needs to be
considered.

Answer / abbas

what is effect of earth on three phase line capacitance?

Answer / rm

FAILURE OF CT PT

How to calculate the Sizes of the cable required for one specific load? Is there any formula for that? ( EX: For 400KW load,50mtr Length, What is the LT cable Size required?)

2 Answers   Texmo,

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i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?

0 Answers   MTDC,

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Define load factor?

0 Answers  

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explain the function of brush less dc motor?

0 Answers   Bhel,

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On Which Pressure PRV is operated.

0 Answers   AEPL,

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Most electrical terms denoted by first letter of its name but Why current is denoted by "I".

4 Answers  

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WITCH CARDS IN USE IN FIRE CONTROL PANEL.

0 Answers  

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What is UPS?

14 Answers   HSL,

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what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

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Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

1 Answers   ACC,

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Impedance relay is directional relay or non directional relay?

2 Answers   KSEB, NTDC,

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I want to know that a 160kva diesel generator contains capacity of 160kva on each phase like R=160 Y=160 B=160 total RYB=480kva or it is total capacity of all there phases like RYB=160kva ... thanks in advance ...

2 Answers   jlpl, JP Saraswat Engineers,

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