April 5, 2020


For example, a step-up transformer with a delta-connected primary, and star- connected secondary, is not written as ‘dY11’, but ‘Yd11’. The As different combinations of winding connections will result in different phase angles between the voltages on the windings, transformers connected in parallel . classic distribution transformers for electric power supply. Oil and gas . Dy11– 20°. 1 x (Dy5 Dd0). +°. 1 x (Dy5 Dd0). –°. 1 x (Dy11–10° Dy Dy11–10°) .

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Vector Group of Transformer | Electrical Notes & Articles

Shayaque Safi Feb 16, September 14, at April 9, at 7: It also matters if you have an auxiliary transformer connected to generator terminals. This position is always the reference point.

Sir, On a converter transformer name plate ,connection is written as Yd11z March 12, at 9: Please what do I do on such load balancing. August 22, at 7: 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. February 7, at 7: February 27, at 7: April 15, at Saha Feb 03, For example, a step-up transformer with a wye-connected primary and a delta-connected secondaryis written as ‘Dy1’.


Does the downstream transformer vektor groups have an effect on fault transflrmer. What do you mean by neutralizing the load angle between 11 and 1?

July 7, at 8: Because of this, transformers are manufactured with a variety of winding configurations to meet these requirements. October 21, at 7: The answer will be useful for us to design. Sorry, your blog cannot share posts by email. Tech Power System Control ,B.

Why DYN11 vector group used in Distribution transformer?

As per your article you said if Dyn1 is used it will suppress 5th harmonic. November 15, at 3: The Teansformer winding vector groups do not allow zero sequence currents commonly known as earth fault current to pass across the transformer.

July 13, at Your electrical dy11 are very very helpful. Dear Sir, I understood that the generator transformer vector group is delta at generator side and star in yard side.

By using this site, you agree to the Terms of Use and Privacy Policy. December 2, at 4: Use the hour indicator as the indicating phase displacement angle. Assuming Ynd1 Transformer with Zigzag connected on delta side for grounding purposes. Saadat Ullah Mar 03, Jignesh, Just to remind that reply to my question is still awaited. The secondary windings are connected similarly. At least 6 characters required.


What is meant by vector group for transformers and why is it important?

Post was not sent – check your email addresses! What would be the repercussion if the earthing transformer is not provided?

Sir what in the mean of Lio vector group and why we can you the other vector group in place of this vector group. Is it possible to build a transformer with the following spec: If not then why. 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. Thank you Regards Heri. My best wishes for many more contributions.