Anode Temperature and Plasma Sheath Dynamics of High Current Vacuum Arc After Current Zero

2013 ◽  
Vol 41 (8) ◽  
pp. 2022-2028 ◽  
Author(s):  
Anton V. Schneider ◽  
Sergey A. Popov ◽  
Alexander V. Batrakov ◽  
Gabriela Sandolache ◽  
Hans Schellekens
Keyword(s):  
Plasma Sheath ◽  
Vacuum Arc ◽  
High Current ◽  
Anode Temperature ◽  
Current Zero

scholarly journals Emission Spectroscopy During High-Current Anode Modes in Vacuum Arc

2017 ◽  
Vol 4 (3) ◽  
pp. 249-252
Author(s):  
A. Khakpour ◽  
R. Methling ◽  
St. Franke ◽  
S. Gortschakow ◽  
D. Uhrlandt
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission ◽  
Metal Vapor ◽  
Vacuum Arc ◽  
Anode Surface ◽  
High Current ◽  
Temporal And Spatial Distribution ◽  
Vacuum Interrupter ◽  
Ionic Copper ◽  
Current Zero

A vacuum interrupter reaches its interruption limit once high-current anode phenomena occur. High-current anode modes lead to an increase of the anode surface temperature and an increased generation of metal vapor, which may result in a weakening of the dielectric recovery strength after current zero. In this work, different discharge modes in a vacuum arc for AC 50 Hz including diffuse, footpoint, anode spot type 1 and type 2, and anode plume are investigated. Electrodes made of CuCr7525 with diameter of 10 mm are used. The final gap length is about 20 mm. Time and space resolved optical emission spectroscopy is used to examine the temporal and spatial distribution of atomic and ionic copper lines. The distribution of atomic and ionic lines parallel and perpendicular to the anode surface is investigated. Radiator density is also determined for CuI, CuII, and CuIII near the anode surface.

Determination of Cr Density After Current Zero in a High-Current Vacuum Arc Considering Anode Plume

2017 ◽  
Vol 45 (8) ◽  
pp. 2108-2114 ◽  
Author(s):  
Alireza Khakpour ◽  
Sergey Popov ◽  
Steffen Franke ◽  
Ruslan Kozakov ◽  
Ralf Methling ◽  
...  
Keyword(s):  
Vacuum Arc ◽  
High Current ◽  
Current Zero

High‐current vacuum arc column motion on rail electrodes

1977 ◽  
Vol 48 (5) ◽  
pp. 1885-1889 ◽  
Author(s):  
Raymond L. Boxman
Keyword(s):  
Vacuum Arc ◽  
High Current

Physical investigations of a high-current vacuum arc discharge

1992 ◽  
Vol 62 (5) ◽  
pp. 525-530
Author(s):  
G. A. Dyuzhev ◽  
S. M. Shkol'nik
Keyword(s):  
Arc Discharge ◽  
Vacuum Arc ◽  
High Current

scholarly journals Post-Arc Characteristics of High-Current Arcs in Vacuum Circuit-Breakers

2019 ◽  
Vol 6 (2) ◽  
pp. 170-174
Author(s):  
N. Wenzel ◽  
W. Haas
Keyword(s):  
Short Circuit ◽  
Early Period ◽  
Metal Vapor ◽  
Transverse Magnetic ◽  
High Current ◽  
Electric Resistance ◽  
Circuit Breakers ◽  
Arc Characteristics ◽  
Current Zero ◽  
Short Circuit Currents

The post-arc (PA) characteristics of vacuum arcs in transverse magnetic field contacts are studied for short-circuit currents of up to 123 kA peak and transient recovery voltages below 875 V. The measured PA currents are interpreted in terms of an Electric Resistance Model and the models of Andrews-Varey, Langmuir-Child, and Slepian-Schmelzle. Whereas in the late PA period, the calculations do not agree well with the measurements, the PA behavior is well described in the early period after current-zero. It is concluded that the PA discharge is amplified by ionization of metal vapor particles in the boundary sheath due to electron impact.

scholarly journals Mechanisms Responsible for Arc Cooling in Different Gases in Turbulent Nozzle Flow

2017 ◽  
Vol 4 (3) ◽  
pp. 234-240 ◽  
Author(s):  
Y. Guo ◽  
H. Zhang ◽  
Y. Yao ◽  
Q. Zhang ◽  
J. D. Yan
Keyword(s):  
Material Properties ◽  
High Speed ◽  
Gas Flow ◽  
Ohmic Heating ◽  
Circuit Breaker ◽  
Fault Current ◽  
High Current ◽  
Physical Mechanisms ◽  
Current Zero ◽  
Different Gases

A high voltage gas blast circuit breaker relies on the high speed gas flow in a nozzle to remove the energy due to Ohmic heating at high current and to provide strong arc cooling during the current zero period to interrupt a fault current. The physical mechanisms that are responsible for the hugely different arc cooling capabilities of two gases (SF<sub>6</sub> and air) are studied in the present work and important gas material properties controlling the cooling strength identified.

Performance of a high‐current metal vapor vacuum arc ion source

1990 ◽  
Vol 61 (12) ◽  
pp. 3775-3782 ◽  
Author(s):  
Hiroshi Shiraishi ◽  
Ian G. Brown
Keyword(s):  
Metal Vapor ◽  
Ion Source ◽  
Vacuum Arc ◽  
High Current
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