Published transformer X/R ratios
Published transformer X/R ratios
(OP)
Does anyone know where I can find published X/R ratios for transformer especially those in the kVA range? I looked in the IEEE Red Book and I only see a table for X/R ratios for transformers in the 1MVA range and higher and I was wondering if there was another reference that I am missing?






RE: Published transformer X/R ratios
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David Castor
www.cvoes.com
RE: Published transformer X/R ratios
Thanks for the tables they are helpful!
Where does SKM reference its R and X values from? For a 75kVA dry type transformer I cannot seem to match the values given to any one of the attached tables?
RE: Published transformer X/R ratios
RE: Published transformer X/R ratios
Isn't there an IEEE standard for transformers that would give all of these typical X/R values?
RE: Published transformer X/R ratios
There might be something in here. I don't have the book, so I'm not sure. I generally use tables from Conrad St. Pierre's book.
The X/R can vary quite a lot on smaller transformers.
David Castor
www.cvoes.com
RE: Published transformer X/R ratios
RE: Published transformer X/R ratios
If you are doing any special application, that require high level of accuracy, I suggest to obtain the actual data of the specific transformer and work with the manufactor and test lab.