what does the transformer connection symbol YNaod1 mean ?

Question Posted / sujeet.eng

3 Answers
31567 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what does the transformer connection symbol YNaod1 mean ?..

Answer / lakshmi

Yna0d1 means star connected hv winding with neutral brought
out, auto transformer with 0 degrees displacement. lv
winding delta connected legging hv winding by 30 degrees.

Y = star connection
n = neutral brought out
a = auto transformer
0 = zero degrees
d = delta connection
1 = 30 degrees lag

Is This Answer Correct ?

85 Yes

8 No

what does the transformer connection symbol YNaod1 mean ?..

Answer / sujeet pandey

you all people must be knowing about the symbols like YN and
d1 but what about a0. The 'a' represents that is
auto-transformer and 0 represents that there is 0 phase
difference b/w H.V. and I.V.(intermediate voltage) winding
since both are star-star. d1 means the transformer has a
tertiary winding which is delta connected and this delta is
lagging the H.V. winding by 30 degree.
There is no symbol for Intermediate voltage becoz all EHV
transformers are star-star connected.

Is This Answer Correct ?

28 Yes

1 No

what does the transformer connection symbol YNaod1 mean ?..

Answer / amir

Y N = HV winding in STAR⭐ connected with NEUTRAL., a=auto transformer with IV winding, oy= open LV winding and STAR connected 1=angle of deviation 1°

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

WHAT IS THE MEANING CREEPAGE DISTANCE

1 Answers

on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help

0 Answers

hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers

I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

0 Answers

Can anyone tell me what will happen if AC & DC supply get mixed???

9 Answers

A 200W,230V lamp is connected across 115V supply.The lamp will draw power?

6 Answers SJVN, TCS,

what is the working principle of DC generator ?

10 Answers DRDL, HCL,

FLP zone Types and Details

1 Answers

why there is 1 phase and 3 phase but not 2 phase and 4 phase?