Simple Methods for Calculating Short Circuit Current

[bob]

Since we have computers to do this, you may not need this but it does show the basics of how it is done.

http://www.geindustrial.com/publibrary/checkout/Short Circuit?TNR=White Papers|Short Circuit|generic

 

[rcwilson]

Love the MVA method. Fast, simple and as accurate as the input data. (Most data is +/-10% at best for most of our calculations).

Popularized by Moon Yuen PE of Bechtel in 1972 with a pamphlet "SHORT CIRCUIT ABC, Learn it in an Hour, Use it Anywhere, Memorize No Formula"

Also published in IEEE Transactions on Industry Applications, March/April 1974, article with the same title.