Experimental Study on DC Arcing Characteristics Under Different Arc Extinguishing Medium

doi:10.16628/j.cnki.2095-8188.2023.04.003

Abstract

Abstract:

In order to explore the arcing characteristics of H₂,N₂ and H₂-N₂ mixed media with different mixing ratios,a visual arc experiment platform was built.The "round-tablet-flat" carbon contact structure was designed to stabilize the arc.A high-speed camera was used to capture the arc shape.The voltage and current probe was used to collect the arc electricity volume and test the arc characteristics of different media.The arc voltage composition of the gas arc and the extraction of the near extreme voltage drop were analyzed.The electric field strength under multiple mixed gases was compared.It indicates that the arc voltage increases with the ratio of H₂ in the H₂-N₂ mixed medium,which can provide a reference for the selection of the gas medium of the DC contactor.

Key words: contactor, arcing characteristic, arc extinguishing medium, arc shape, arc voltage

CLC Number:

TM501.2

GUO Hongbin, ZHANG Tao, TANG Jianfang, MA Chi, LI Zhongxiang. Experimental Study on DC Arcing Characteristics Under Different Arc Extinguishing Medium[J]. LOW VOLTAGE APPARATUS, 2023, 0(4): 15-20.

Figures/Tables 11

References 22

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