Discussion on Baltimore oil circuit breaker tests

B. G. Jamieson: I would like to make an announcement which I was commissioned to make by the Subcommittee of the A. I. E. E. on oil circuit breakers. We have as a heritage a definition of duty cycle, which is fundamental in determining the rating of oil circuit breakers. That duty cycle, as defined by Hewlett, Burnham, Mahoney in a paper written about four years ago, represents the sumtotal of available literature on the subject. The adoption by the American Institute of Electrical Engineers of a standard definition is based on that paper.