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I have a 33 KV sub stn with two mother transformers 33/11
KV of capacity 3150 and 1600 KVA respectively. The total
connected load 16809 KVA(11/0.433KV).how i calculate the
max current & how i decided the CMD.
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Answer Posted / er.mazhar0731
Ur tranformer not able to bear load coz total 4.75 mva are bear 83.125 amp current in 33 kv side and in 11 kv, 250 amp
But As per ur kva 16809 KVA DTC ur load current is 675 amp which is excess ( 100kva = 4 amp 11 kv side current )
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