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Answer Posted / arun babu.s
OLTC,can be installed even at secondary side,but the
problem is, the transformer tank should be bigger size,oil
in the transformer needs to designed accordingly to extend
its di-electric property and the tap contacts to be heavy
comparatively,to withstand the high current in the LT side.
Hence,to avoid so,the OLTC designed at PRIMARY side of the
transformer.
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