Results 11 to 20 of about 1,555 (283)

Effect of Cr@RGO structure on microstructure and properties of RGO/CuCr25 composite

Materials Research Express, 2021
CuCr alloy with high Cr content (20–50 wt.%) is the main contact material for medium voltage and high current vacuum interrupters. However, the influence of network distribution of Cr particles affect the conductivity of CuCr alloy, and its properties ...
Jinfeng Leng, Yunfan Dong, Xi Chen, Changpeng Xia, Mingxing Du, Guorong Zhou   +5 more
doaj   +1 more source

Breakdown performance of vacuum circuit breakers using alternative CF3I-CO2 insulation gas mixture [PDF]

, 2016
In this paper, sulphur hexafluoride (SF6) insulated vacuum interrupter circuit breakers have been used to explore replacing SF6 gas with a trifluoroiodomethane and carbon dioxide (CF3I-CO2) gas mixture.
Griffiths, H., Haddad, A., Widger, P.
core   +1 more source

Capacitive making of double‐break vacuum circuit breaker: Transverse magnetic field contacts are superior to axial magnetic field contacts

IET Generation, Transmission & Distribution, 2022
Previous studies mainly focused on the behaviours of single‐break vacuum circuit breakers (VCBs) in switching capacitor banks. The prestrike characteristics of double‐break VCBs subjected to axial magnetic fields (AMFs) and transverse magnetic fields ...
Yun Geng, Xinggui Chen, Luyang Zhang, Xiaofei Yao, Jing Peng, Yingsan Geng, Zhiyuan Liu   +6 more
doaj   +1 more source

Thermal and arc erosion behavior of CuCr contact material based on large plastic deformation treatment

Journal of Materials Research and Technology, 2023
CuCr alloys are the main contact materials used in medium-voltage and high-current vacuum interrupters. In this paper, the effect of large plastic deformation on microstructure and the transverse/longitudinal thermal conductivity of CuCr30 contact ...
Xiuhua Guo, Kaiyue Duan, Xu Wang, Kexing Song, Xiangfeng Zhang, Kai Li   +5 more
doaj   +1 more source

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon [PDF]

, 2019
As noble liquid time projection chambers grow in size their high voltage requirements increase, and detailed, reproducible studies of dielectric breakdown and the onset of electroluminescence are needed to inform their design.
Bernard, EP, Kravitz, S, McKinsey, DN, O'Sullivan, K, Richardson, G, Riffard, Q, Tvrznikova, L, Waldron, WL, Watson, J   +8 more
core   +2 more sources

Arc erosion resistance of WC/CuCr30 composites based on changing of Cr particle morphology and orientation

Journal of Materials Research and Technology, 2023
CuCr30 composite was commonly applied in medium and low voltage vacuum interrupters. The WC/CuCr30 composites based on changing of Cr particle morphology and orientation were successfully prepared by vacuum hot press sintering and hot extrusion, and the ...
Kaiyue Duan, Xiuhua Guo, Kexing Song, Xu Wang, Jiang Feng, Shaolin Li, Jianying Zhong, Kai Li   +7 more
doaj   +1 more source

Study of the influences of different factors on the charged particles absorbed by the post-arc anode during the post-arc sheath expansion process in vacuum circuit breakers

AIP Advances, 2021
The dielectric recovery process has decisive effects on the current interruption process in vacuum circuit breakers, which has attracted the special attention of researchers.
Yongpeng Mo, Zongqian Shi, Shenli Jia
doaj   +1 more source

Comparison of Conventional and Flash Spark Plasma Sintering of Cu–Cr Pseudo-Alloys: Kinetics, Structure, Properties

Metals, 2021
Spark plasma sintering (SPS) is widely used for the consolidation of different materials. Copper-based pseudo alloys have found a variety of applications including as electrodes in vacuum interrupters of high-voltage electric circuits.
Kirill V. Kuskov, Mohammad Abedi, Dmitry O. Moskovskikh, Illia Serhiienko, Alexander S. Mukasyan   +4 more
doaj   +1 more source

Analysis of the Vacuum Arc Interruption Process in Aviation Intermediate-Frequency Power Supply Systems

Energies, 2017
In this paper, we present our research into the interruption performance of vacuum circuit breakers in aviation intermediate-frequency (360 Hz to 800 Hz) power supply systems. Intermediate-frequency vacuum arc experiments were carried out in interrupters
Yuan Jiang, Jianwen Wu, Mingxuan Chen, Wenlei Huo   +3 more
doaj   +1 more source

Experimental Investigation of the Prestrike Characteristics of a Double-Break Vacuum Circuit Breaker under DC Voltages

Energies, 2020
The prestrike phenomenon in vacuum circuit breakers (VCBs) is interesting but complicated. Previous studies mainly focus on the prestrike phenomenon in single-break VCBs. However, experimental work on prestrike characteristics of double-break VCBs cannot
Yun Geng, Xiaofei Yao, Jinlong Dong, Xue Liu, Yingsan Geng, Zhiyuan Liu, Jing Peng, Ke Wang   +7 more
doaj   +1 more source