Field Tests and Design Evaluation of a 230-kV 20 000-MVA Oil Circuit Breaker

Recent field tests of a 230-kV, 20 000-MVA oil circuit breaker are discussed and evaluated. Initial test results revealed requirements for design modifications, the nature of which are reviewed. An interim field development test and the final acceptance tests are renewed and data are presented. The need for a developmental field test site and the characteristics and organization of one such facility are described.