1,100,000-kva short-circuit transformer in the new high-capacity switchgear testing laboratory [includes discussion]

This paper describes the design and construction of a particular testing transformer, custom-built to meet requirements imposed by its use in high-voltage short-circuit testing of circuit breakers, fuses, disconnect switches, and so forth, at the new high-capacity switchgear testing laboratory' of the General Electric Company. While some of the problems usually encountered in power transformer designs were reduced to insignificance by specific requirements, others were magnified to the extent that normal construction was out of the question. Consequently, the design is quite special and includes a number of unusual features which are described herein.