Answer / s.arunkumar

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

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.

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

who & how the notations given as RYB to 3phase power supply.

1 Answers  

---

In Round type three phase transformer why the LV side is inner part and HV outer part in the design of transformer? why they cant be opposite?

2 Answers  

---

what is the meaning of 0.5ohm Resistance

0 Answers   Vardhman,

---

What is phase in electrical engineering?

5 Answers  

---

solar energy light efficiency & disadvantages?

0 Answers  

---

Why a Transformer Noise during its running condition ??

11 Answers   NTPC, UPPCL,

---

Can Dy11 and Dy1 vector group transformers be paralleled?

1 Answers  

---

what is electric traction?

26 Answers   TCS, Volvo,

---

what is breaking capacity

1 Answers  

---

What phase difference between p and s winding of transformer

1 Answers   MAHINDRA,

---

what is apparent poewr, reactive power, & active power?

0 Answers  

---

1.what to do if ferquency of any power system continue to decrease ?

5 Answers   NTPC,

---