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Electrical Life of Vacuum Interrupters
2006 International Symposium on Discharges and Electrical Insulation in Vacuum, 2006The breaking of currents from a couple of amperes to several tens of kilo-amperes is a main function of medium voltage circuit breakers. Vacuum has become the leading technology in this field with attributes such as high reliability and superior electrical endurance.
M. Schlaug +3 more
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Developmenbt of Power Vacuum Interrupters
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1962The practicality of using vacuum interrupters for switchgear applications has been demonstrated by the successful development of a number of prototype devices. Interrupting tests have been made at currents up to 43,000 amp (amperes) at 15.5 kv and recovery rates up to 6,000 volts/?sec (per microsecoind).
T. H. Lee +3 more
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Distribution of electric field in vacuum interrupter during interrupting
Proceedings ISDEIV. 19th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No.00CH37041), 2002The electric field distribution in a high-voltage vacuum interrupter is calculated and analyzed with the finite-element method. In the calculation, the potential on the electrodes is set asymmetric and the voltage on the floating shield is unknown. The influence of plasma conductivity and charges on electrode surface is also considered.
null Wang Zhongyi, null Wang Jimei
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Current interruption in vacuum
1994The vast majority of power switching devices spend almost all their service life in the closed position, conducting current to a load. Yet the major effort in their design and development is directed to the relatively infrequent occasions when, on command, they interrupt this current, or to the even rarer occasions, when they operate in anger to clear ...
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2007
The invention relates to a vacuum interrupter chamber having an insulating ceramic wall, within which contact pieces which move in a vacuum are arranged and are surrounded by a screen between the contact piece and the interrupter chamber wall, according to the preamble of patent claim 1.
ABB TECHNOLOGY AG +3 more
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The invention relates to a vacuum interrupter chamber having an insulating ceramic wall, within which contact pieces which move in a vacuum are arranged and are surrounded by a screen between the contact piece and the interrupter chamber wall, according to the preamble of patent claim 1.
ABB TECHNOLOGY AG +3 more
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Review of vacuum interrupter development carried out in London by Vacuum Interrupters Limited
29th Annual Weekend Meeting History of Electrical Engineering, 2001Vacuum Interrupters Limited was founded in 1968. This was a joint venture originally between GEC which inherited the work carried out by English Electric and AEI, together with Reyrolle- Parsons, and later including Hawker-Sidderly (Brush). This paper concentrates briefly on some of the innovative technology developed during the period from 1968-92 ...
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Interruption ability of vacuum interrupters subjected to axial magnetic fields
Proceedings of the Institution of Electrical Engineers, 1972Two vacuum interrupters equipped with 7 cm-diameter electrodes have been power tested with and without the presence of an axial magnetic field during arcing. The field strength was 2×10−5 teslaper arcing ampere, with a negligible field at a current zero.
C.W. Kimblin, R.E. Voshall
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Post arc current of vacuum interrupter after large current interruption
IEEE Transactions on Power Delivery, 1988Postarc current characteristics of a vacuum interrupter have been examined under a condition of high-current interruption. A measurement technique was developed in which a shunt for measuring postarc current was set in a synthetic test circuit voltage source. Postarc current was measured after a 20-57 kA current interruption.
Y. Hakamata +4 more
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Fiber-controlled vacuum interrupter module used for fault current interruption
24th ISDEIV 2010, 2010A novel fiber-controlled vacuum interrupter module (FCVIM) is proposed in this paper, which can be used for controlled interruption of short circuit currents by means of point-on-wave control. In the FCVIM, the permanent magnetic actuator operates at high potential terminal with the vacuum interrupter, the operation commands come from low potential ...
Xiongying Duan +3 more
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Resistance increase of vacuum interrupters due to high-current interruptions
IEEE Transactions on Dielectrics and Electrical Insulation, 2014The resistance of vacuum interrupters can be calculated from the geometry and resistivity of current carrying parts and the additional resistance of the contact points between movable and fixed contacts. Since vacuum interrupter contacts are designed as flat contacts facing each other, the resistance is mainly determined by contact force, hardness and ...
E. Dullni +3 more
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