About vector group concept of transformers

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SUMMARY

The discussion centers on the vector group concept of transformers, specifically the Dy11 configuration, which indicates a phase difference of 330 degrees between the primary and secondary voltages. This configuration raises questions regarding the phase alignment of the coils, as the primary and secondary coils are on the same core. The confusion stems from the distinction between single-phase and three-phase transformers, highlighting the need for clarity in understanding transformer configurations.

PREREQUISITES
  • Understanding of transformer vector groups, specifically Dy11.
  • Knowledge of phase relationships in electrical engineering.
  • Familiarity with single-phase and three-phase transformer operation.
  • Basic principles of electromagnetism as they relate to transformers.
NEXT STEPS
  • Research the implications of transformer vector groups on system performance.
  • Study the differences between Delta and Wye configurations in transformers.
  • Learn about phase shift calculations in three-phase systems.
  • Explore practical applications of Dy11 transformers in electrical systems.
USEFUL FOR

Electrical engineers, power system designers, and students studying transformer theory and applications.

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How we speak about the coil of primary in phase of a versus secondary coil
this is accepted (as there is on same core)

But question about
we say this transformer (ex) is vector group Dy11
that means phase difference between primary and secondary voltage is 330 angle
!

It's conflicted with that versus coil are the same phase

!
 
Engineering news on Phys.org
I have no idea what you are asking - DY11? Delta Wye? --- first part of your question seems to be about a single phase transformer, then second part a 3 phase?
 

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