In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume

In a Dyn11 transformer, how are the 3 windings of the delta
connected? Assume that R1-R2, Y1-Y2, B1-B2 are the 3
windings on the HV side.

Question Posted / nagraj

3 Answers
7398 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B..

Answer / s.arunkumar

the delta connection will be at 11'o clock position vector
group

Is This Answer Correct ?

6 Yes

3 No

In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B..

Answer / josyula ravikumar

In a Dyn11 transformer,Hv windings in delta conection and
LV in star only as the vector symbol represents in first
and second letters. numeral 11 indicates that when we super
impose the secondary voltage vector on to the primary one
secondary voltage vector leads the primary vector by 30
degrees.when we superimpose and make a study on delta side
imagine the neutral.

By connecting R1-Y2,Y1-B2,B1-Y2 and taking R1, Y1 and B1 to
terminals DYn11 will be achived. The same transfomer can be
changed to Dyn1 by interchanging the connections in delta.
i.e, R2-Y1;Y2-B1;C2-R1.

Is This Answer Correct ?

6 Yes

5 No

In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B..

Answer / amit biswas

DYn11 means a step up tr. where pr. side is delta connected
and sec side is star connected."n" stands for neutral which
means a netral is taken from the star point of the sec. wdg.
11 means sec is leading the the pr. by 30 deg.

using neutral is essential for zero seq. protection

Is This Answer Correct ?

3 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

Is RTCC panel needs any control supply.

0 Answers HPCL, Schneider,

What will happen if we do not provide earthing to the newtral of a power system ?

2 Answers Jindal, NPCIL,

why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50

3 Answers

What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer

0 Answers Equate,

why needtwo winding LV and HV in transformer?

1 Answers Organic Industries,

Can any body explain the operation system of MVWS(May be related to water and fire hydraunt system)?

2 Answers TATA,

The MCB circuit breaker have a voltage rating of 440VAC it's possible to supply a voltage of 480Vac

1 Answers

what is the difference between upper impedance and lower impedance distance relay?

3 Answers Havells, Power Grid,

what is the operation of regulator in fan?

4 Answers NTPC,

what are the difference between protection class CT and Class PS CT

13 Answers

Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??

3 Answers

when will cause the negative sequence falut in electrical system?

2 Answers Schneider,

For more Electrical Engineering Interview Questions Click Here