Answer Posted / subash nishad

in distribution transformer we are using delta/star
configuration because many consumers having single phase
load .for this one phase and neutral is nessesary. from
delta / star configuration we can get neutral.

delta/ star is correct.

temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%

1491

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