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How to calculate HT XLPE CABLE for 11 kv / 433 v , 1500 kva
oil type transformer system?
plz provide step by step calculation
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Answer Posted / engr. md n h shabuj
S=(Ish *√t)/K
=(10.49*√1)/0.143
=73.35
=75Rm cable
Ish =P/ (√3*V* % of Z)
= (1500*10^3 )/( √3*11*10^3*7.5%)
=1049A
Ish =1049*10=10490A=10.49KA
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