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

Volume

10

Issue

2

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

804

Lastpage

810

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;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.400850

Filename

400850