Results 1 to 10 of about 239 (164)
Classification of prestrike types in vacuum interrupter eroded by inrush current based on DC dynamic gap measurement method. [PDF]
PLoS ONEThe characteristics and types of prestrike are critical factors affecting the performance of vacuum circuit breakers (VCBs) in controlled switching. However, there is a lack of studies on the prestrike characteristics and types in vacuum interrupter (VI)
Pu Chen +7 more
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Conceptional design for a universal HVDC-HVAC vacuum-interrupter-based circuit breaker [PDF]
Scientific ReportsModern power systems high voltage transmission systems either HVDC or HVAC has mandated the presence of two types of circuit breakers (CB), HVAC-CB and HVDC-CB. That required two different production lines, higher costs and more complicated manufacturing
Fady Wadie, Tamer Eliyan
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Technical study for complete one-time sealing of vacuum interrupter [PDF]
MATEC Web of Conferences, 2021 This paper briefly describes the development process of sealing technology for vacuum interrupter, analyze the main characteristics of each stage and difficulties in realizing one-time sealing.
Xue Congjun +3 more
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Methodology for testing the electric strength of vacuum chambers designed for modern medium voltage switchgear [PDF]
Metrology and Measurement Systems, 2021 The article presents methodology for testing the electric strength of vacuum chambers designed for modern medium voltage switchgear developed by the authors, using two innovative test stands designed and constructed by the research team above ...
Paweł Węgierek +3 more
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Online Detection of Vacuum Level of Circuit Breaker Based on Terahertz Wave Return Loss
Journal of Harbin University of Science and Technology, 2022 For the online detection of vacuum degree in circuit breaker interrupter chamber, based on the principle of terahertz detection technology, the method of online detection of vacuum degree in circuit breaker using terahertz wave return loss is adopted ...
LUO Hong-hong +3 more
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Study on the Effect of Helium on the Dielectric Strength of Medium-Voltage Vacuum Interrupters
Energies, 2021 This paper presents the results of a comparative analysis of the dielectric strength of disconnecting vacuum interrupters operating on air and helium. The breakdown voltage Ud was measured in the pressure range from 8.0 × 10−4 Pa to 3.0 × 101 Pa for air ...
Paweł Węgierek +3 more
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High Voltage, 2022 The multiple reignitions of vacuum circuit braker (VCB) while switching off the shunt reactor in an offshore wind farm (OWF) would produce a high overvoltage. The post‐arc process of ion movement in the vacuum interrupter is analysed.
Zhi Zheng +5 more
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A fast LVDC vacuum hybrid circuit breaker: Dielectric recovery and design consideration
IET Generation, Transmission & Distribution, 2021 Aiming at the fast protection requirements of electrical ships LVDC distribution system, this paper studies a topology of unidirectional vacuum hybrid circuit breaker.
Siqi Liu +4 more
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Energies, 2021 The internal pressure of a vacuum interrupter (VI) is increased by arc heat, ceramic cracking, gas leakage, and manufacturing defects. Accordingly, the dielectric strength of VI rapidly decreases.
Seungmin Bang +2 more
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IEEE Access, 2022 One of the most crucial parameters in operating a vacuum interrupter (VI) is internal pressure. The failure of switching or insulation occurs when the pressure rises above a specific level.
Hong Nhung-Nguyen +2 more
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