Dependence of Arc Duration and Contact Gap at Arc Extinction of Break Arcs Occurring in a 48VDC/10A-300A Resistive Circuit on Contact Opening Speed

Haruko YAZAKI; Junya SEKIKAWA

doi:10.1587/transele.2020ECP5041

IEICE TRANSACTIONS on Electronics

Dependence of Arc Duration and Contact Gap at Arc Extinction of Break Arcs Occurring in a 48VDC/10A-300A Resistive Circuit on Contact Opening Speed

Haruko YAZAKI, Junya SEKIKAWA

Full Text Views

0

Cite this

Summary :

Dependences of arc duration D and contact gap at arc extinction d on contact opening speed v are studied for break arcs generated in a 48VDC resistive circuit at constant contact opening speeds. The opening speed v is varied over a wide range from 0.05 to 0.5m/s. Circuit current while electrical contacts are closed I₀ is varied to 10A, 20A, 50A, 100A, 200A, and 300A. The following results were obtained. For each current I₀, the arc duration D decreased with increasing contact opening speed v. However, the D at I₀=300A was shorter than that at I₀=200A. On the other hand, the contact gap at arc extinction d tended to increase with increasing the I₀. However, the d at I₀=300A was shorter than that at I₀=200A. The d was almost constant with increasing the v for each current I₀ when the I₀ was lower than 200A. However, the d became shorter when the v was slower at I₀=200A and 300A. At the v=0.05m/s, for example, the d at I₀=300A was shorter than that at I₀=100A. To explain the cause of the results of the d, in addition, arc length just before extinction L were analyzed. The L tended to increase with increasing current I₀. The L was almost constant with increasing the v when the I₀ was lower than 200A. However, when I₀=200A and 300A, the L tended to become longer when the v was slower. The characteristics of the d will be discussed using the analyzed results of the L and motion of break arcs. At higher currents at I₀=200A and 300A, the shorter d at the slowest v was caused by wide motion of the arc spots on contact surfaces and larger deformation of break arcs.

Publication: IEICE TRANSACTIONS on Electronics Vol.E104-C No.11 pp.656-662

Publication Date: 2021/11/01

Publicized: 2021/04/01

Online ISSN: 1745-1353

DOI: 10.1587/transele.2020ECP5041

Type of Manuscript: PAPER

Category: Electromechanical Devices and Components

Authors

Haruko YAZAKI
Shizuoka University
Junya SEKIKAWA
Shizuoka University

Keyword

break arcs, electrical contacts, high-speed camera, arc discharge

Cite this

Copy

Haruko YAZAKI, Junya SEKIKAWA, "Dependence of Arc Duration and Contact Gap at Arc Extinction of Break Arcs Occurring in a 48VDC/10A-300A Resistive Circuit on Contact Opening Speed" in IEICE TRANSACTIONS on Electronics, vol. E104-C, no. 11, pp. 656-662, November 2021, doi: 10.1587/transele.2020ECP5041.
Abstract: Dependences of arc duration D and contact gap at arc extinction d on contact opening speed v are studied for break arcs generated in a 48VDC resistive circuit at constant contact opening speeds. The opening speed v is varied over a wide range from 0.05 to 0.5m/s. Circuit current while electrical contacts are closed I₀ is varied to 10A, 20A, 50A, 100A, 200A, and 300A. The following results were obtained. For each current I₀, the arc duration D decreased with increasing contact opening speed v. However, the D at I₀=300A was shorter than that at I₀=200A. On the other hand, the contact gap at arc extinction d tended to increase with increasing the I₀. However, the d at I₀=300A was shorter than that at I₀=200A. The d was almost constant with increasing the v for each current I₀ when the I₀ was lower than 200A. However, the d became shorter when the v was slower at I₀=200A and 300A. At the v=0.05m/s, for example, the d at I₀=300A was shorter than that at I₀=100A. To explain the cause of the results of the d, in addition, arc length just before extinction L were analyzed. The L tended to increase with increasing current I₀. The L was almost constant with increasing the v when the I₀ was lower than 200A. However, when I₀=200A and 300A, the L tended to become longer when the v was slower. The characteristics of the d will be discussed using the analyzed results of the L and motion of break arcs. At higher currents at I₀=200A and 300A, the shorter d at the slowest v was caused by wide motion of the arc spots on contact surfaces and larger deformation of break arcs.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2020ECP5041/_p

Copy

@ARTICLE{e104-c_11_656,
author={Haruko YAZAKI, Junya SEKIKAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Dependence of Arc Duration and Contact Gap at Arc Extinction of Break Arcs Occurring in a 48VDC/10A-300A Resistive Circuit on Contact Opening Speed},
year={2021},
volume={E104-C},
number={11},
pages={656-662},
abstract={Dependences of arc duration D and contact gap at arc extinction d on contact opening speed v are studied for break arcs generated in a 48VDC resistive circuit at constant contact opening speeds. The opening speed v is varied over a wide range from 0.05 to 0.5m/s. Circuit current while electrical contacts are closed I₀ is varied to 10A, 20A, 50A, 100A, 200A, and 300A. The following results were obtained. For each current I₀, the arc duration D decreased with increasing contact opening speed v. However, the D at I₀=300A was shorter than that at I₀=200A. On the other hand, the contact gap at arc extinction d tended to increase with increasing the I₀. However, the d at I₀=300A was shorter than that at I₀=200A. The d was almost constant with increasing the v for each current I₀ when the I₀ was lower than 200A. However, the d became shorter when the v was slower at I₀=200A and 300A. At the v=0.05m/s, for example, the d at I₀=300A was shorter than that at I₀=100A. To explain the cause of the results of the d, in addition, arc length just before extinction L were analyzed. The L tended to increase with increasing current I₀. The L was almost constant with increasing the v when the I₀ was lower than 200A. However, when I₀=200A and 300A, the L tended to become longer when the v was slower. The characteristics of the d will be discussed using the analyzed results of the L and motion of break arcs. At higher currents at I₀=200A and 300A, the shorter d at the slowest v was caused by wide motion of the arc spots on contact surfaces and larger deformation of break arcs.},
keywords={},
doi={10.1587/transele.2020ECP5041},
ISSN={1745-1353},
month={November},}

Copy

TY - JOUR
TI - Dependence of Arc Duration and Contact Gap at Arc Extinction of Break Arcs Occurring in a 48VDC/10A-300A Resistive Circuit on Contact Opening Speed
T2 - IEICE TRANSACTIONS on Electronics
SP - 656
EP - 662
AU - Haruko YAZAKI
AU - Junya SEKIKAWA
PY - 2021
DO - 10.1587/transele.2020ECP5041
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E104-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2021
AB - Dependences of arc duration D and contact gap at arc extinction d on contact opening speed v are studied for break arcs generated in a 48VDC resistive circuit at constant contact opening speeds. The opening speed v is varied over a wide range from 0.05 to 0.5m/s. Circuit current while electrical contacts are closed I₀ is varied to 10A, 20A, 50A, 100A, 200A, and 300A. The following results were obtained. For each current I₀, the arc duration D decreased with increasing contact opening speed v. However, the D at I₀=300A was shorter than that at I₀=200A. On the other hand, the contact gap at arc extinction d tended to increase with increasing the I₀. However, the d at I₀=300A was shorter than that at I₀=200A. The d was almost constant with increasing the v for each current I₀ when the I₀ was lower than 200A. However, the d became shorter when the v was slower at I₀=200A and 300A. At the v=0.05m/s, for example, the d at I₀=300A was shorter than that at I₀=100A. To explain the cause of the results of the d, in addition, arc length just before extinction L were analyzed. The L tended to increase with increasing current I₀. The L was almost constant with increasing the v when the I₀ was lower than 200A. However, when I₀=200A and 300A, the L tended to become longer when the v was slower. The characteristics of the d will be discussed using the analyzed results of the L and motion of break arcs. At higher currents at I₀=200A and 300A, the shorter d at the slowest v was caused by wide motion of the arc spots on contact surfaces and larger deformation of break arcs.
ER -

IEICE TRANSACTIONS on Electronics