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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In star-star transformer how can we do vector group test?? The Determination of vector group of transformers is very important before connecting two or more transformers in parallel. This is very helpful for people…….
I am creating a page about the transformers principle here http: An AC voltage applied to a coil will induce a voltage in a second coil where the two are linked by a magnetic path. Prabir Chandra Dutta says: Now i am thinking to order a new oil transformer of Dy11y11 configuration.
I have a question about the vrctor polarity.
Vector group – Wikipedia
Facebook Linkedin Google Plus Twitter. Is it possible to build a transformer with the following spec:. Farhaduzzaman Apr 05, January 28, at 6: June 5, at 8: What would be the repercussion if the earthing transformer is not provided? How to give earth fault protection?
Understanding Vector Group of Transformer (part 1)
Use the hour indicator as the indicating phase displacement angle. As per your article you said if Dyn1 is used hransformer will suppress 5th harmonic. This is called a 30 degree phase shift. May 23, Comments.
Most important is how you draw vector diagram when trafo are connected in any manner and how to draw conclusion on phase shift. My best wishes for many more contributions.
Sir what in the mean of Lio vector group and why we can you the other transformfr group in place of this vector group. The phase angle of the LV winding lags the HV by 30 degrees.
Retype your new password here mandatory! Transformsr 12, at 9: Is there any constraint in Yy0 configuration? Why Vector group Yd3, Dy3 are omitted however they are possible connections?
Egbe, edigbo michael says: Email Please enter a valid email id.
Rohan Thurstans Aug 01, From the article here I understood that secondary side winding is phase shift by 30 degrees with respect to primary side winding. February 24, at cyn11 Sugandh Mar 14, Should not be the polarity always same? You stated that in Dy connectiony nullifies the 3rd harmonics. I invite your posiblility and suggesstions from author and the group please.
What is meant by vector group for transformers and why is it important?
I read this article and i realy appreciate your efforts. March 29, at August 15, at Generally we use Delta — Star Transformer Dyn Why it does not have Yy4 lagging? November 7, at 1: But in your article it is mentioned as reverse order.