Transformer Vector Group Connection
Transformer Vector Group Connection
(OP)
What is the difference between a Yd11 tranformer and Dy11?
I have a distribution transformer (440V/230V) connected in Dy11. As I recommended. However, there are other people saying that it should be Yd11...
Please advise.
I have a distribution transformer (440V/230V) connected in Dy11. As I recommended. However, there are other people saying that it should be Yd11...
Please advise.






RE: Transformer Vector Group Connection
Do you need a neutral on the LV side?
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If we learn from our mistakes I'm getting a great education!
RE: Transformer Vector Group Connection
RE: Transformer Vector Group Connection
What are the impact of neutral on LV or HV side?
RE: Transformer Vector Group Connection
Impact on the :
1. Insalation
2. Ground/Earth fault level
I think 400V is only solid grounding, except some special applications.
Best Regards.
Slava
RE: Transformer Vector Group Connection
What is the application? Primary voltage? Is this step up or step down application?
Too many unknowns.
RE: Transformer Vector Group Connection
My recommendation was based on previous projects, "other people" I do not know, hence the question...
I strongly believe that this should be Dyn11. How would a YnD11 work in these conditions, could you at all have a transfomer of this type for distribution systems? Seems weird to me...
RE: Transformer Vector Group Connection
Many people erroneously believe that since the loads are only 3 phase, 3 wire, a delta secondary is needed. That is not true. Also Delta-Wye is most common and most popular choice, unless there is a great technical reason for other configuration.
RE: Transformer Vector Group Connection
RE: Transformer Vector Group Connection
No, it is paralleled with a similar transformer, divided by a bus tie...
RE: Transformer Vector Group Connection