Short Circuit Calculations: Basic Calculations and Transformer Sizing

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 …

…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