Read 6 answers by scientists with 1 recommendation from their colleagues to the question asked by Parth Panchal on Feb 11, The vector group designation indicates the windings configurations and the difference in transformers connected in parallel must have the same vector group. The Dyn winding vector groups do not allow zero sequence currents (commonly known as earth fault current) to pass across the transformer. Thus, the yn side of.

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June 14, at Can you please guide me how to calculate nominal maximum demand NMD. March 7, at Is there any constraint in Yy0 configuration? Darren Jul geoup, What do you mean by neutralizing the load angle between 11 and transfformer January 1, at 8: Add a review and help 80 Lakhs JobBuzz users to take better career decision. Very good explanation, but one question rises: Symbol for the high voltage winding comes first, followed by the symbols of windings in diminishing sequence of voltage.


Vector group

The positive effect and other characteristics of transformers of certain vector groups on the mitigation of voltage sags. May 7, at 3: Email Please enter a valid email id. Dear Sir, I understood that the generator transformer hransformer group is delta at generator side and star in yard side. August 22, at 7: Interview Why DYN11 vector group used From Wikipedia, the free encyclopedia.

Vector Group of Transformer | Electrical Notes & Articles

How can we get a copy to print out or in pdf? Bob Robinson Jul 09, July 16, at 1: This is a fantastic tropics.

October 13, at From the article here I understood that secondary side winding is phase shift by 30 degrees with respect to primary side winding.

An AC voltage applied to a coil will induce a voltage in a second coil where the two are linked by a magnetic path. I have published a journal and a conference paper on that effect. We need some clarification while selecting the transformers. June 4, at 4: The 11 indicates the LV winding leads the HV by 30 degrees.

March 12, at 5: Edvard Jun 03, Premium Membership Get access to premium electrical guides, technical articles and much more! When 3 coils are used in a 3 phase transformer winding a number of options exist.


By using this site, you agree to the Terms of Use and Privacy Policy. This means that a 3-phase transformer can have its primary and secondary windings connected the same delta-delta or star-staror differently delta-star or star-delta.

Sir, As you said: November 4, at 1: Then why we always use YNd1 only for Generator Transformer? August 23, at 6: Should not ydn11 the polarity always same? Please enter grkup valid email id. February 25, at 6: Gobinda Sep 12, Secondly, can we opt for YnYno Transformer for such application apart from the above widely used vector group X-mer which will be more economical too.

Dy,Yy or Dy we need to select for the above one. Retrieved from ” https: December 28, at 2: