why we use delta connection in primary and star connection in an distribution

why we use delta connection in primary and star connection
in an distribution transformer,which converts 400V a.c
voltage to 33KV?

Question Posted / g.shanmugam

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why we use delta connection in primary and star connection in an distribution transformer,which co..

Answer / ramesh patel

Hi,
1. The distribution transformer is meant for 3phase 4wire
system and is for utilities where the fourth wire i.e
neutral is required by users for protection and control of
the switch-gears and power network.
2. Primary delta and secondary star connection prevent the
source side harmonics to impact the secondary side utilities.
3.No need to carry neutral wire of the 400VAC system to the
transformer, if primary is delta connected bcz only three
wire solve the purpose in delta /Star and neutral wire
easily connected to star point of secondary.

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why we use delta connection in primary and star connection in an distribution transformer,which co..

Answer / amritpal singh sidhu

We use the delta in primary & star in secondary winding in
distribution transformer, to take star point or neutral
point. Because potential is always zero at star
point...............!

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