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Long-term vacuum integrity of vacuum interrupters
2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014Vacuum interrupters (VI's) are the primary switching technology for medium voltage (1–52kV) electrical power systems. The extensive field service of VI's is now raising interest in determining the end of life for these devices, with the primary concern being the loss of vacuum.
E. D. Taylor, A. Lawall, D. Gentsch
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Interrupting capability of vacuum interrupter by various parameter
2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC), 2012Vacuum interrupter (VI) has been commercially available in medium voltage switching equipment. Recently, the development of the VIs is focused to reduce the size. Thus, it is necessary to a smaller size contact. In this paper, we investigated the interruption behavior in the real VI with two different contact size of the transverse magnetic field (TMF)
Chi-Wuk Gu +4 more
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Interrupting abilities of vacuum interrupters with horseshoe electrode
SPIE Proceedings, 1994In this paper, the high current vacuum arc behavior with horse shoe electrode has been described. These are dynamic vacuum arc distribution, the maximum current density related to the interrupting limit and factors which influences the interrupting limits. Then based on the above analyses, several vacuum interrupters within (phi) 70 mm outside diameter
W. Shang, H. Schellekens
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Particle detection in vacuum interrupter after current interruption
2013 19th IEEE Pulsed Power Conference (PPC), 2013After high current interruption in vacuum interrupter, the electrode temperature rises because of the current heat process, and the surface becomes rough due to the arc burn on electrodes. In this paper, random discharge after current zero is reported, and conducting particle is considered to be responsible for the phenomenon.
Shuo Xu +4 more
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Development of Vacuum Interrupters with High Interrupting Capacity
IEEE Transactions on Power Delivery, 1987Vacuum interrupters, in which axial magnetic field type electrodes and CuCr contact materials are ccnbined, show excellent performance from all points of view. By this combination of electrode and contact material, the arcing phenomenon is scmewhat different from that of existing combinations. We have investigated the arcing and dielectric phenanena in
M. Okawa +5 more
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Reignition current interruption characteristics of the vacuum interrupter
IEEE Transactions on Power Delivery, 1988The high-frequency (70-600 kHz) current-interrupting capability of the vacuum interrupter has been investigated using an LC surge testing circuit. Three parameters were examined: di/dt, (di/dt)/gap, and Q*(di/dt)/gap, where Q is a quantity that represents the amount of residue between contacts at zero reignition current. It was found that Q*(di/dt)/gap
Y. Matsui, T. Yokoyama, E. Umeya
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2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014
Vacuum circuit breakers are extending their applications from low/medium voltage level to high voltage level due to their good properties. Multi-break vacuum circuit breakers are used in special applications because thry have better breaking capability and withstand higher breakdown voltage compared with single-break vacuum circuit breakers.
Liqiong Sun +4 more
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Vacuum circuit breakers are extending their applications from low/medium voltage level to high voltage level due to their good properties. Multi-break vacuum circuit breakers are used in special applications because thry have better breaking capability and withstand higher breakdown voltage compared with single-break vacuum circuit breakers.
Liqiong Sun +4 more
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The vacuum arc and vacuum interruption
Journal of Physics D: Applied Physics, 1989The vacuum arc has been widely studied in recent years. One of the principal reasons for this interest has been the increasing use of the vacuum arc to achieve circuit interruption in electrical distribution systems. This is an expanding application with sales predictions of 300000 units for 1987 and with many millions already in service worldwide ...
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V-t characteristics of vacuum interrupter after large current interruption
24th ISDEIV 2010, 2010Because of the contact material's evaporation and ejection of some metal particles out of the contact gap during the flow of the vacuum arc, the contact surface may exhibit some erosion after each operation of vacuum circuit breakers. In this study, the insulation properties were investigated for vacuum interrupters with the rated voltage about 10 kV ...
S. Sato +5 more
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