Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and

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)?

Question Posted / jigs

4 Answers
10681 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution ..

Answer / 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.

Is This Answer Correct ?

12 Yes

2 No

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution ..

Answer / rajesh kumar

we use y-y connection in power transformer 132kv as we know
that in star connection line voltage is-1.732.phase
voltage.so it is easy to insulate the winding as the
voltage level is low.and cost is less due to degrading of
insulation.

Is This Answer Correct ?

3 Yes

0 No

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution ..

Answer / mrudang

ok u r using any transformer , anywhere but
the important is what is ur need ?
if u want , in distribution u need 440v -phase to neutral
u r using star connection

u need 11kv hv , u use delta connection

the important is u r using neutral or not generally line
side transformer has delta connected

Is This Answer Correct ?

6 Yes

5 No

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution ..

Answer / morongoa

WE USE Y-Y CONNECTION IN POWER TRANSFORMER COS WE NEED STAR
POINT SO IN DELTA YOU DNT HAVE A STAR POINT AND FOR
DISTRIBUTION YOU USE D-Y CO YOU TAKING POWER FRM SUBSTATION
WHICH IS 11KV FRM SUB TRANSFORMER TO YOUR CONSUMERS

Is This Answer Correct ?

1 Yes

8 No

Post New Answer

More Electrical Engineering Interview Questions

what is frequancy

7 Answers TCS, Torrent Power,

Can we use generator transformer as step down transformer? How?

3 Answers

How the output,losses and temperature of machines varies with linear dimension?

1 Answers

what is advantage of providing taping on HT side?