Short Circuit Capacity: Basic Calculations and Transformer Sizing Short circuit capacity calculation is used for many applications: sizing of transformers, selecting the interrupting capacity ratings of circuit breakers and fuses, determining if a line reactor is required for use with a variable frequency drive, etc. The purpose of the presentation is to gain a basic understanding of short circuit capacity. The application example utilizes transformer sizing for motor loads. Conductor impedances and their associated voltage …showed first 75 words of 1818 total…

…showed last 75 words of 1818 total…by Cutler-Hammer, Division of Eaton Corporation, Pittsburgh, PA. [2] "Short Circuit Capacity and Voltage Sag," IEEE (Institute of Electrical and Electronic Engineers) Industry Application Society (IAS) Magazine, July/August 2000, page 38. You might find this magazine in universities which have Electrical Enginneering programs. Do not get it confused with IEEE Transactions on Industry Applications which is a different publication. [3] "Power Distribution Products" Catalog ATD-01, Acme Electric Corporation, 1995, page 125. Power Quality and Drives LLC http://www.powerqualityanddrives.com