Title :
Capacitor switching capability of vacuum interrupter with CuW contact material
Author :
Yokokura, K. ; Matsuda, M. ; Atsumi, K. ; Miyazawa, T. ; Sohma, S. ; Kaneko, E. ; Ohshima, I.
Author_Institution :
Toshiba Corp., Tokyo, Japan
fDate :
4/1/1995 12:00:00 AM
Abstract :
The authors carried out shunt capacitor switching tests on 24 kV model vacuum interrupters with contact materials CuW and CuCr. The restriking probability of the contact material CuW is lower than that of CuCr. The contact material CuW is also an excellent candidate for shunt capacitor switching except for its high current interruption ability. The restriking probability of a 24 kV, 25 kA vacuum interrupter with contact material CuW is calculated as 10-5, which is practically zero
Keywords :
chromium alloys; copper alloys; electrical contacts; power capacitors; probability; restriking voltage; switchgear testing; tungsten alloys; vacuum circuit breakers; vacuum interrupters; 24 kV; 25 kA; CuCr; CuW; capacitor switching capability; contact material; high current interruption ability; restriking probability; shunt capacitor switching tests; vacuum interrupter; Circuit breakers; Circuit testing; Contacts; Frequency; Interrupters; Materials testing; Power distribution; Surges; Switched capacitor circuits; Switching circuits;
Journal_Title :
Power Delivery, IEEE Transactions on
