Results 231 to 240 of about 1,555 (283)
Some of the next articles are maybe not open access.
The self actuating vacuum interrupter (SAVI): A new concept in vacuum interrupter technology
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), 2016This paper describes a new approach to the design of Vacuum Interrupters. Presently a Vacuum Interrupter (VI) is a component of electrical switchgear, which relies on an external mechanism to provide the movement of the contacts required for switching operation.
L. T. Falkingham, W. J. Molan
openaire +1 more source
Post-arc current measurement and interruption performance of vacuum interrupter in DC interruption
Journal of Physics D: Applied Physics, 2022Abstract In the DC grid, fault current rises very fast due to low impedance. Fast DC circuit breakers are needed to isolate faults and avoid a collapse of the common DC grid voltage. Based on the forced current zero (CZ) technology, the vacuum interrupter (VI) equipped with fast electromagnetic repulsion mechanism is a very promising ...
Qiang Tang +3 more
openaire +1 more source
The Vacuum Interrupter Contact
IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1984A survey of developments in electric contact design for vacuum interrupters is presented. The major emphasis is placed upon those characteristics of contact design that have led to practical vacuum interrupters. A brief description is given of the different modes of vacuum arc that have been observed and how these modes occur during one-half cycle of ...
openaire +1 more source
Useful Life of Vacuum Interrupters
IEEE Transactions on Power Apparatus and Systems, 1978A vacuum interrupter may not be called upon to function to interrupt fault current for relatively lengthy periods of time. In the stand-by mode and carrying rated continuous current, some parts of the interrupter may reach temperatures substantially above ambient.
M. E. Arthur, M. J. Zunick
openaire +1 more source
Dynamic insulation in vacuum interrupters
SPIE Proceedings, 1994Breaking capacity of vacuum circuit breakers is limited by dynamic voltage withstanding of their vacuum interrupters in a sense. Dynamic insulation in a vacuum interrupter can be represented externally by their dielectric recovery behavior and the stability of voltage withstanding.
Jiyan Zou, Junjia He, Li-chun Cheng
openaire +1 more source
Challenges For Vacuum Interrupter Design
2006 International Symposium on Discharges and Electrical Insulation in Vacuum, 2006Vacuum interrupters form the key component of a medium voltage (MV) vacuum switchgear design. Vacuum interrupter technology is now well established and key manufacturers across the world are routinely producing interrupters for ratings up to 52kVrms. Manufacturers have focused on reducing the cost of interrupter components by adapting to more efficient
R. Parashar, A. Baker, A. Sitzia
openaire +1 more source
Bouncing phenomena of vacuum interrupters
24th ISDEIV 2010, 2010Bouncing is a phenomenon often observed during circuit-breakers operation. The effect occurs at the moment, when the interrupter contacts touch during closing. For vacuum interrupters, bouncing is caused by the oscillatory motion of the movable vacuum interrupter stem in conjunction with the associated contact springs. The dependencies between involved
Edgar Dullni, Sean-Feng Zhao
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source