Circuit Breakers for Boulder Dam Line
- 1 April 1935
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 54 (4) , 366-372
- https://doi.org/10.1109/T-AIEE.1935.5056991
Abstract
Because of its length, 270 miles, the 275 kv transmission line from Boulder Dam to Los Angeles, Calif., requires extremely high speed switching for stability. To meet the requirements, a high voltage impulse circuit breaker, extending the oil blast theory to cover a multibreak construction with double cross-blast ports, has been built. It provides over-all switching times consistently less then 3 cycles (3/60 second). Approximately 10 per cent as much oil is used as in a comparable breaker of conventional design, and only 1/10 of this is exposed to arcing. Large factors of safety are provided over and above the interrupting rating of 5,000 amperes, 287 kv, or 2,500,000 kva.Keywords
This publication has 3 references indexed in Scilit:
- The Theory of Oil-Blast Circuit BreakersTransactions of the American Institute of Electrical Engineers, 1932
- The Oil-Blast Circuit BreakerTransactions of the American Institute of Electrical Engineers, 1931
- Extinction of a Long A-C. ArcTransactions of the American Institute of Electrical Engineers, 1930