A 230-Kv 3-Cycle Oil Circuit Breaker for Extra-Heavy Arc Rupturing Duty
- 1 January 1948
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 67 (1) , 236-242
- https://doi.org/10.1109/t-aiee.1948.5059667
Abstract
As the ultimate generating capacity of Grand Coulee Dam is approached, designers of high voltage circuit-interrupting devices are challenged to produce circuit breakers capable of interrupting faults far in excess of the present maximum standard rating of 3,500,000 kva. An oil circuit breaker designed for extra-heavy are rupturing duty is described in this paper. Results of varification tests made in the laboratory are compared with those obtained on subsequent field tests at Grand Coulee Dam. The close correlation of circuit breaker performance in the field and laboratory confirms the accuracy of the laboratory method of testing. With successful correlation up to 7,500,000 kva and laboratory tests simulating still higher rupturing duty, there is now a sound basis for design of oil circuit breakers with a rated interrupting capacity up to 10,000,000 kva.Keywords
This publication has 5 references indexed in Scilit:
- The Interruption of Charging Current at High VoltageTransactions of the American Institute of Electrical Engineers, 1947
- 4,370,000-Kva Short-Circuit Tests on Grand Coulee 230-Kv BusTransactions of the American Institute of Electrical Engineers, 1946
- High-Voltage Oil Circuit Breakers for Rapid Reclosing DutyTransactions of the American Institute of Electrical Engineers, 1944
- Oil-Impregnated-Paper High-Voltage Condenser Bushings for Circuit Breakers and TransformersTransactions of the American Institute of Electrical Engineers, 1943
- A Multiorifice Interrupter for High-Voltage Oil Circuit BreakersTransactions of the American Institute of Electrical Engineers, 1943