Answer Posted / hussein

Delta-Star
reason: isolation transformer is to isolate the neutral.
However, the transformer input will be only 3 core cable
(RYB phases) which will be connected as delta, output will
be 4 cores (3 phases and one neutral) and clean earth which
will be commoned to neutral at the star point.

I am completed DEEE in tamilnadu, now i am working in andhrapradesh with 2.5 year experience in relavent field. capacity of the tranformer is 11KV, 1MVA Transformer, i am eligible for getting c licence in andhrapradesh pl help me.

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