How to calculate voltage drop in copper and aluminium cable? I have laid 240S

How to calculate voltage drop in copper and aluminium cable?

I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground.
Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

Question Posted / ramanharikrishnan

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable..

Answer / viren89desai@yahoo.co.in

http://www.openelectrical.org/wiki/index.php?title=Cable_Sizing_Calculation

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