scholarly journals A Novel Model of Thyristor in Reverse Recovery Process for Current Interruption Test of HVDC Circuit Breakers

2020 ◽  
Author(s):  
Zhonghao Dongye ◽  
Lei Qi ◽  
Xiang Cui ◽  
Xianshan Guo ◽  
Hua Zhang ◽  
...  
Keyword(s):  
Recovery Process ◽  
Circuit Breakers ◽  
Current Interruption ◽  
Novel Model

Current Interruption in Low-Voltage Circuit Breakers

2010 ◽  
Vol 25 (1) ◽  
pp. 206-211 ◽  
Author(s):  
A. Balestrero ◽  
L. Ghezzi ◽  
M. Popov ◽  
L. van der Sluis
Keyword(s):  
Low Voltage ◽  
Circuit Breakers ◽  
Current Interruption

scholarly journals Rotating Constricted Switching Arcs Burning in Gas and in Vacuum

2017 ◽  
Vol 4 (2) ◽  
pp. 173-176
Author(s):  
D. Baron ◽  
S. Ettingshausen ◽  
M. Koletzko ◽  
A. Lawall ◽  
T. Rettenmaier ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
High Velocity ◽  
Scaling Law ◽  
Metal Vapor ◽  
Transverse Magnetic ◽  
High Current ◽  
Circuit Breakers ◽  
Current Interruption ◽  
Magnetic Probes ◽  
Contact Size

The method of controlling high-current switching arcs by transverse magnetic fields (TMF) forcing the constricted arc to rotate in a contact system is being applied successfully to improve the breaking capability of vacuum interrupters and gas circuit breakers. We describe the behavior of magnetically driven switching arcs in vacuum and in gas environment. We report on experiments using high-velocity videography, magnetic probes, and spectroscopy; they deliver the velocity, the temperature and the voltage of an arc. We present models and simulations of the moving constricted arc burning in metal vapor and in air. And we describe a particular switching application of TMF arc control and explain a scaling law of the contact size with the current interruption capability.

High speed x-ray radiography diagnostic of current interruption in circuit breakers

2002 ◽  
Vol 73 (4) ◽  
pp. 1945-1948 ◽  
Author(s):  
A. M. Zolfaghari ◽  
E. Kellogg ◽  
S. Wendt ◽  
J. Gray
Keyword(s):  
High Speed ◽  
Circuit Breakers ◽  
Current Interruption ◽  
X Ray

Recovery of Withstanding Voltage After Direct Current Interruption Using Vacuum Circuit Breakers

2021 ◽  
pp. 1-8
Author(s):  
Haruki Ejiri ◽  
Ryo Kikuchi ◽  
Akiko Kumada ◽  
Kunihiko Hidaka ◽  
Akihiro Suwa ◽  
...  
Keyword(s):  
Direct Current ◽  
Circuit Breakers ◽  
Current Interruption

scholarly journals High-current interruption in vacuum circuit breakers

1997 ◽  
Vol 4 (6) ◽  
pp. 836-840 ◽  
Author(s):  
M. Binnendijk ◽  
W.F.H. Merck ◽  
R.P.P. Smeets ◽  
K. Watanabe ◽  
E. Kaneko
Keyword(s):  
High Current ◽  
Circuit Breakers ◽  
Current Interruption

scholarly journals A Novel Approach to Power Circuit Breaker Design for Replacement of SF6

10.14311/548 ◽  
2004 ◽  
Vol 44 (2) ◽  
Author(s):  
D. J. Telfer ◽  
J. W. Spencer ◽  
G. R. Jones ◽  
J. E. Humphries
Keyword(s):  
Circuit Breaker ◽  
Circuit Breakers ◽  
Power Circuit ◽  
Current Interruption ◽  
Novel Approach ◽  
Different Gases ◽  
Critical Contact ◽  
Made In ◽  
Gas Pressures

This contribution explores the role of PTFE ablation in enhancing current interruption for various background gases in high voltage circuit breakers. An assessment of the current interruption capability has been made in terms of the arcing duration and the contact gap length at which critical arc extinction is achieved. These observations are supported by measurements of the magnitude of extinction and re-ignition voltage peaks. Most previous and other current experimental work on gas filled circuit breaker design follows conventional wisdom in investigating arcing behaviours at elevated gas pressures (usually up to 6 bar). But in this work we concentrate on the effects of using low gas pressures (less than 1 bar) in the presence of a close-fitting shield of ablatant polymer material (PTFE) that surrounds the electrode assembly of an experimental high power circuit breaker. We demonstrate that for several different gases, arc extinction capability compares well under these conditions with SF6, suggesting that SF6 could be replaced entirely in this novel system by more environmentally friendly gases. Moreover, the critical contact gap lengths at extinction are only slightly greater than when using SF6 at 6 bar. Weight loss measurements from the ablatant shield suggest that a chemical puffer action is the most likely mechanism for achieving the observed arc extinctions in this system.

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