Thermal effect on the anode electrode surface when a high current interruption in vacuum circuit breaker

2015 ◽  
Author(s):  
Yuji Nikadori ◽  
Shun Hanashiro ◽  
Eiji Kaneko
Keyword(s):  
Thermal Effect ◽  
Electrode Surface ◽  
Circuit Breaker ◽  
High Current ◽  
Current Interruption ◽  
Vacuum Circuit Breaker ◽  
Anode Electrode

Study on Factor of the Quenching Performance on the Polymer Material Characteristics of an Air Circuit Breaker

2016 ◽  
Vol 718 ◽  
pp. 15-20
Author(s):  
Norrawit Tonmitr ◽  
Kazuki Ganaha ◽  
Eiji Kaneko ◽  
Takehiro Hayashida
Keyword(s):  
Polymer Material ◽  
Arc Discharge ◽  
Circuit Breaker ◽  
Pressure Rise ◽  
Polymer Materials ◽  
High Current ◽  
Peak Voltage ◽  
Current Interruption ◽  
Material Characteristics ◽  
Air Circuit Breaker

Usage of polymer materials in a quenching chamber is one of the most effective methods of improving performance of an air circuit breaker [1, 2]. During a high current interruption in the air circuit breaker, an arc discharge touches the insulator, and ablation gasses are emitted [3]. It is considered that the quenching performance and an arc characteristic are affected by this ablation gasses. In order to clarify the quenching performance of each polymer material, we are conducting the experiments. With these experiments, the relationships of the ablation gasses among the number of arcing cycles, arcing peak voltage, arcing conductances, and the pressure rise will be discussed with four kinds of polymer materials.

scholarly journals Influence of Varying Gaps Between TMF Contacts on Constricted High Current Vacuum Arcs

2019 ◽  
Vol 6 (1) ◽  
pp. 103-106
Author(s):  
B. Kühn ◽  
B. Weber ◽  
D. Gentsch ◽  
M. Kurrat
Keyword(s):  
High Speed ◽  
Industrial Development ◽  
Circuit Breaker ◽  
Metal Vapor ◽  
High Speed Camera ◽  
High Current ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker ◽  
Vacuum Test ◽  
Transversal Magnetic

The behavior of high current arcs in vacuum circuit breaker (VCB) is interesting for research and industrial development purpose which lead to further products. To improve the interruption capability of VCB, two approaches to control the arc have been proven successful. Applying transversal magnetic fields (TMF) on the arc is use for industrial VCB in medium voltage ranges. For greater gap distances the behavior of the arc is less thoroughly investigated. <br /> In this paper, the appearance of metal vapor arcs drawn by common TMF contacts in a vacuum-test-interrupter is investigated. An adapted drive mechanism enables to interrupt a fixed current with varying gaps from 5 to 25 mm and a constant opening time. Breaking operations with a 50 Hz current are observed with a high speed camera. With increasing gap distance a changed arc appearance can be observed. The goals of this work are to be understood as a feasibility study for optical evaluation methods for vacuum arcs under TMF.

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