Zobrazeno 1 - 10
of 30
pro vyhledávání: '"T. Kamikawaji"'
Publikováno v:
IEEE Transactions on Plasma Science. 31:963-967
A cathode spot model is used to analyze the instability phenomena of a vacuum arc. The current below which no real solution exists is believed to be an unstable region. When the current decreases below 19 A, the electrons returning to the sheath regi
Publikováno v:
IEEJ Transactions on Power and Energy. 120:1343-1349
Publikováno v:
IEEE Transactions on Power Delivery. 10:286-293
Using a scanning electron microscope (SEM) and a laser microscope, we observed micro-flakes and particles. On machined Cu-Cr contacts which were considered to be built-up edges due to machining. A large number of microparticles of 5.7-8.7/spl times/1
Publikováno v:
IEEE Transactions on Power Delivery. 8:163-167
The authors observed and analyzed the dynamic characteristics of long-stroke stainless steel bellows for a vacuum interrupter when it is extended and contracted at high speeds. The dimensions of bellows tested are: outer diameter 85 mm, inner diamete
Publikováno v:
IEEE Transactions on Power Delivery. 8:1789-1795
The performance of vacuum circuit breakers in switching shunt capacitors depends much more on in-rush current than on interrupting current. This is because when contacts that were fused together by pre-arcs during contact closing are forcibly separat
Autor:
Mitsutaka Homma, Tetsu Shioiri, Tamon Ozaki, J. Sato, Katsumi Suzuki, Sakaguchi Osamu, Miyagawa Masaru, T. Kamikawaji
Publikováno v:
2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.
The authors have developed solid insulated switchgear that does not use SF/sub 6/ gas at all as an insulating medium. This paper describes the insulating material technology, diagnostic technology for partial discharge, insulation technology of the v
Publikováno v:
IEEE/PES Transmission and Distribution Conference and Exhibition.
A vacuum insulation system has little effect on environments. Therefore, the vacuum insulation system is expected to find wider application, such as disconnecting switch and earthing switch. To investigate the reliability of equipment of vacuum insul
Publikováno v:
20th International Symposium on Discharges and Electrical Insulation in Vacuum.
A cathode spot model is used to analyze the instability phenomena of vacuum arc. The current below which no real solution exists is believed to be an unstable region. When the current decreases below 12 A, the electrons returning to the sheath region
Publikováno v:
20th International Symposium on Discharges and Electrical Insulation in Vacuum.
Breakdown probability distribution before and after no-load switching was investigated for a vacuum interrupter made from copper-chromium alloy. Since the multi-break vacuum circuit breaker was considered as a method for realizing a high-voltage vacu
Publikováno v:
Proceedings of 17th International Symposium on Discharges and Electrical Insulation in Vacuum.
The authors have been studying the conditioning effect characteristic of dielectric breakdowns in a vacuum. Tests were carried out to see the conditioning effect at nonuniform field gaps and the effect of electron beam treatment. The results of the t