Calculate transformer inrush current

[victa1288]

I came across a project which I have to deal with a lot existing trnasformers. For those transformers, I have to find out their actual inrush current based on real short circuit capacity of the source. The higher the short circuit
capacity, the higher the inrush current. I am wondering if anybody here has any rule-of thumb formulas to calculate this inrush current.

Thanks in advance.

 

[cuky2000]

As a rule-of-thumb, consider the inrush current as 12 times the full load current of the selft rating cooling of the transformer for a duration of 0.1 sec.

See the enclose info:

http://www.hubbellpowersystems.com/...rary/pdfs4lib/Chance-Construction/10-8901.pdf

 

[cuky2000]

For more information, serach this site.

Ex. thread238-10885

 

[hvcad]

References 2 and 3 of the following paper might be useful:

http://www.ipst.org/TechPapers/2005/IPST05_Paper026.pdf

Dr K S Smith
Mott-MacDonald, Power Systems Division
Glasgow, Scotland.