Proposed Short-Circuit Capability Test Code for Transformers

This paper is a presentation for trial use of a proposed test code for the short-circuit testing of distribution transformers rated 167 kVA and below. It covers factors such as transformer connections, calibration tests, test procedure, duration of tests, and proof of satisfactory test performance. The test code was prepared by the Working Group on Methods of Making Temperature Rise Tests of the Insulation Life Subcommittee of the IEEE Transformer Committee for possible eventual inclusion into the USASI Standards C57.12.90.