Why we use Y-Y connection in power transformer (8-10 MVA,
132 kV to 11 KV)and D-y in distribution transformer (2 MVA,
11 KV to 440 Volts)?
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Answer Posted / rajesh kumar
we use y-y conection in exctra high voltage transformer
like 132kv as we know that in star connection line voltage
is-1.732.phase voltage.so less insulation required in y-y
conection.
in distrubution transformer at 11kv we can easily insulate
windings due to voltage level is low.and also get domestic
load.
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