What are differences Dy11 and Dy5 for a Transformer?
What are differences Dy11 and Dy5 for a Transformer?
(OP)
Dear everybody,
Would you like to explain me about:
1. Dy11 and Dy5 connection in a transformer?
2. What are differences both of them?
Thank you for your attention and explanation.
Regards,
Jonos
Would you like to explain me about:
1. Dy11 and Dy5 connection in a transformer?
2. What are differences both of them?
Thank you for your attention and explanation.
Regards,
Jonos






RE: What are differences Dy11 and Dy5 for a Transformer?
Y = wye connected winding
Capital letter = HV winding
Lower case letter = LV winding
Number = equivalent phase shift between primary and secondary, based on a clock dial (5 = five o'clock, or 150° lagging, 11 = eleven o'clock, or 30° leading)
Just remember, phase shift depends on phase rotation.
Dy11 vector group for phase rotation 1-2-3 becomes Dy1 for phase rotation of 1-3-2
see: Thread238-11381
Hope it helps
RCC
RE: What are differences Dy11 and Dy5 for a Transformer?
A very Spartan description of transformer-vector groups is pages 15-16 of www.cooperpower.com/Library/pdf/S150301.pdf
Effectively, the Y-winding sets are 180° out of phase from each other—id est, “6 hours” on the clock face.
RE: What are differences Dy11 and Dy5 for a Transformer?
Thats Correct.
But, what is the diferent betwen both winding Dy11 and Dy5 (im talking about physicals form of the transformer winding).
Regards.
RE: What are differences Dy11 and Dy5 for a Transformer?
Where can I get the drawing/reference about that?
Regards
jonos
RE: What are differences Dy11 and Dy5 for a Transformer?
jonos, please (re)read the links provided. Your question has been answered.
RE: What are differences Dy11 and Dy5 for a Transformer?
The physical differences of the 2 secondary windings,each hooked up as single STAR .There are no differences,the out of phase condition is created by the connection of output leads H1/2/3s and X1/2/3.Magnectics will do the rest.
Thanks
GusD
RE: What are differences Dy11 and Dy5 for a Transformer?
http://www.riedel-trafobau.de/english/pdf_eng/in_general/explanation.pdf
See last page (pg 5) for some drawings
RCC
RE: What are differences Dy11 and Dy5 for a Transformer?
Thank a lot for your information and explanation.
Rgs,
Jonos