New code for Transformers
New code for Transformers
(OP)
Hy everyone,
please, help with reference regarding the new codes for transformers such as DD and DY and so on.
Those codes show the major configuration, phase-shift and grounding on Transformers.
Thanks, NNG.
please, help with reference regarding the new codes for transformers such as DD and DY and so on.
Those codes show the major configuration, phase-shift and grounding on Transformers.
Thanks, NNG.






RE: New code for Transformers
You might search on “vector group” here.
RE: New code for Transformers
For example Dyn11 indicates HV delta, LV star with the neutral terminal brought out, and a 30 degree phase shift.
Buy yourself the "J&P Transformer Book", which contains all sorts of useful information on transformers including vector groups.
There was also a discussion somewhere on Eng-Tips about this topic not so long since. Try out the search function.
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RE: New code for Transformers
Your reference book is a good help!
The standard abbreviation seems easy for their users in UK but for others as in US it is a puzzle.
Sincerely, NNG
RE: New code for Transformers
RE: New code for Transformers
Please start a new threat when you are asking questions that are not related to the original question.
Discrimination is in short a method to ensure that the breaker nearest to a fault opens first. It can use either time or overcurrent, or a combination of both to achieve correct co-ordination.