A New High-Capacity Air Breaker
- 1 August 1939
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 58 (8) , 414-420
- https://doi.org/10.1109/T-AIEE.1939.5057981
Abstract
Air circuit breakers for lower voltages of simple design are being replaced by improved types, which incorporate specially designed circuit-interrupting devices for the purpose of improving the interrupting efficiency and minimizing the formation of arc flame and gases. A new form of deionizing arc interrupter is described which is equally effective for both d-c and a-c circuits. A new air circuit breaker has been designed to utilize this interrupter in which carbon arcing contacts are replaced by refractory metal, and laminated-brush-type main contacts are replaced by silver-faced solid copper. These improvements have led to greatly increased current-carrying capacity in breakers of a given size and also large increases in interrupting capacity with a minimum of noise and flame, which permits the breakers to be readily mounted in enclosures and cubicles of small physical size.Keywords
This publication has 4 references indexed in Scilit:
- Enclosed Low-voltage ``De-ion'' Air Circuit Breaker of High Interrupting CapacityTransactions of the American Institute of Electrical Engineers, 1938
- ``De-ion'' Air Circuit Breakers for A-C Feeder, Motor Starting, and Station Auxiliary ServiceTransactions of the American Institute of Electrical Engineers, 1938
- Extinction of a Long A-C. ArcTransactions of the American Institute of Electrical Engineers, 1930
- Extinction of an A-C. ArcTransactions of the American Institute of Electrical Engineers, 1928