Arcing Stabilization Effect and Ablation Characteristics for C–Cu Electrodes at Low Air Pressure

Dong, Keliang; Wu, Guangning; Qian, Pengyu; Ma, Yong; Luo, Yuan; Yang, Zefeng; Wei, Wenfu

doi:10.1109/tte.2023.3269903

IEEE Trans. Transp. Electrific.

2024

DOI: 10.1109/tte.2023.3269903

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Arcing Stabilization Effect and Ablation Characteristics for C–Cu Electrodes at Low Air Pressure

Keliang Dong

Guangning Wu

Pengyu Qian

et al.

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2024

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Cited by 3 publications

References 39 publications

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Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Gao,

Yang,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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The droplet diameter, dripping frequency, and arc bead appearances vary significantly with pressure. This study investigated the arc erosion characteristics of copper-core cable with mica insulation (HC0) and aluminum-core cable with PI insulation (HA0) at different pressures. During arcing of HC0, the diameters of dripping droplets decrease as pressure decreases, but the dripping frequency exhibits an increasing trend. The more insulation fragments participated in the dripping of droplets at low pressure result in smaller dripping droplets and bigger dripping frequency. The primary arc beads (PABs) of HA0 at atmospheric pressure are mainly globular arc beads. HA0 PABs at 60 kPa are mostly coral arc beads, which is attributed to the slow oxidation rate and easier outflow of liquid aluminum through cracks at low pressure. HA0 PABs have the characteristics of coral arc beads and gradual necking, which broadens the previous theory in accident investigations that coral arc beads and gradual necking are considered as physical evidences of fire globules and short-circuit melted marks. Besides, the influence of pressure on arc duration of HC0 and HA0 is revealed. This study could provide support for fire accident investigation and arc accident prevention.

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Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Gao,

Yang,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

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Arc stability and ablation characteristics in O₂, N₂, and air environments

Dong,

Yang,

Luo

et al. 2024

Phys. Scr.

Self Cite

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Arcing is widely used in the processing and manufacturing of electrical materials. Arc duration and stability play a key role in the quality and efficiency of arc welding and cutting. Additionally, the generation of the arc will cause faults, failures, and even fire, and explosion in the electrical contact system. Arc is also a critical problem that threatens the safe and stable work of electrical contact systems. Therefore, a platform for arc experiment and test analysis in a multi-atmosphere environment is built in this paper. The influence of the gas environments and gas pressures on arc breaking distance and ablation characteristics is explored. The experimental results show that the oxygen environment is conducive to rapid arc extinguishing. This phenomenon is because oxygen has strong electronegativity, which makes it easy to adsorb charged particles and leads to a density decrease of charged particles. The variation of arc breaking distance and ablation characteristics under different gas environments and gas pressures is found. The influence mechanism of gas environments and gas pressures on arc breaking distance and ablation characteristics are explored. The correlation mechanism between arc breaking distance and arc ablation characteristics is revealed. The research results provide theoretical support for improving the quality of electrical material processing and manufacturing and the service life of electric contact systems. Keywords: Arc breaking distance, arc stability, arc ablation, different arcing environments

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Research on Abnormal Arc Extinguishing Phenomenon Under Low Vacuum Environment for Electrified Transportation

Luo,

Yang,

Dong

et al. 2024

IEEE Trans. Transp. Electrific.

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Arcing Stabilization Effect and Ablation Characteristics for C–Cu Electrodes at Low Air Pressure

Cited by 3 publications

References 39 publications

Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Arc stability and ablation characteristics in O₂, N₂, and air environments

Research on Abnormal Arc Extinguishing Phenomenon Under Low Vacuum Environment for Electrified Transportation

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About

Arcing Stabilization Effect and Ablation Characteristics for C–Cu Electrodes at Low Air Pressure

Cited by 3 publications

References 39 publications

Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Arc erosion characteristics of cables with heatproof insulations in AC series circuits at low pressure

Arc stability and ablation characteristics in O2, N2, and air environments

Research on Abnormal Arc Extinguishing Phenomenon Under Low Vacuum Environment for Electrified Transportation

Contact Info

Product

Resources

About

Arc stability and ablation characteristics in O₂, N₂, and air environments