What happen if we use DYn1 vector group for distribution transformer? that the structure DYn11 is also simple in comparison with some other vector groups. What is the meaning of Dyn11 of Transformer Answer / devidas. First symbol/ symbols, capital letters: HV winding connection. Second symbol/symbols, small. In theory a three-phase transformer works like three separate transformer’s rating plate. Dyn Yyn0. Yd1. Yd Dz0. Yz1. Yz

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What is the meaning of Dyn11 of Transformer.

Here’s the trasformer diagram that explain the 30 degree phase shift: September 3, at 8: When you want to go for parallel you have to check follows. Post was not sent – check your email addresses! Thanks, To clearify my problem of vector group…transformer? Please check the additive polarity symbolic daigram.

Dyn11 means the Secondary side winding Star lags the primary side winding Delta by Electrical Degrees. Yd11 in terms of performance.

Notice the “y” is written in small letters which means LV side n- This represents that the Star side of the transformer is connected to transforme ground with the neutral wire. February 7, at 7: Sir what in the mean of Lio vector group and why we can you the other vector group in place of this vector group.

Vector group

Premium Membership Premium membership gives you an access to specialized technical articles and extra premium content electrical guides and software. When two transformers are connected in parallel, their phase shifts must be identical; if not, a short circuit will occur when the transformers are energized.


I would like to synchronise LT V Generator voltage driven by back pressure transforemr to a LT bus derived out of dyn11 transormer. Jignesh, Just to remind that reply to my question is still awaited. What will be vector group for that. It’s easy to join and it’s free.

Retype your new password here mandatory! In electrical engineeringa vector group is the International Electrotechnical Commission IEC method of categorizing the high voltage HV windings and low voltage LV winding configurations of three-phase transformers.

Also dyh11 does this mean: The only factor affecting the choice between one or the other is system phasing, i.

Vector Group of Transformer

But when the primary and secondary windings are connected differently, the secondary voltage waveforms will differ from the corresponding primary voltage waveforms by 30 transormer degrees.

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Deepak Nov 18, August 17, at 8: How should I choose the vector group for each transformer. Views Read Edit View history. This is a good ready reference regarding vector group and selection of various vector groups. Please what do I do on such load balancing.

If you say the rotation anti-clock then TR. For selecting Distribution Transformer: April 22, at 4: 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.


If you wind two coils together on eyn11 core and you applied AC to one of them and then used an oscilloscope to look at the voltage waveforms on the driven coil and the undriven coil you will find that the tgansformer AC voltages are in phase.

Understanding Vector Group of Transformer (part 1)

December 29, at 2: August 13, at 1: From the article here I understood that secondary side winding is phase shift by 30 degrees with respect to primary trqnsformer winding. January Learn how and when to remove this transvormer message.

Premium Membership Get access to premium electrical guides, technical articles and much more! Husnain Jan 16, March 12, at 5: July 1, at 8: Electrolytic capacitors also connected across DC to minimize ripple voltage. Thank you Regards Heri.

September 5, at 5: The coil voltages can be in phase or displaced as above with the coils connected transforker star or delta and, in the case of a star winding, have the star point neutral brought out to an external terminal or not.

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