Relationships between Break Arc Behaviors of AgSnO<SUB>2</SUB> Contacts and Lorentz Force to be Applied by an External Magnetic Force in a DC Inductive Load Circuit Up to 20V-17A

Seika TOKUMITSU; Makoto HASEGAWA

doi:10.1587/transele.2019EMS0001

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Relationships between Break Arc Behaviors of AgSnO₂ Contacts and Lorentz Force to be Applied by an External Magnetic Force in a DC Inductive Load Circuit Up to 20V-17A

Seika TOKUMITSU, Makoto HASEGAWA

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Summary :

When AgSnO₂ contacts were operated to break an inductive DC load current of 14V-12A, 20V-7A or 20V-17A at a contact opening speed of 10mm/sec or slower, application of an external magnetic field resulted in reductions in break arc durations even without magnetic blowing. Simple estimation of Lorentz force to be applied onto arc column revealed that a certain minimum magnitude of Lorentz force seems to be required for initiating arc blowing. Certain relationships between the Lorentz force magnitude and the timing of metallic-to-gaseous phase transition were also found to exist.

Publication: IEICE TRANSACTIONS on Electronics Vol.E102-C No.9 pp.641-645

Publication Date: 2019/09/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.2019EMS0001

Type of Manuscript: BRIEF PAPER

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Authors

Seika TOKUMITSU
Chitose Institute of Science and Technology
Makoto HASEGAWA
Chitose Institute of Science and Technology

Keyword

magnetic blowing, break arc, AgSnO₂ contacts

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Seika TOKUMITSU, Makoto HASEGAWA, "Relationships between Break Arc Behaviors of AgSnO2 Contacts and Lorentz Force to be Applied by an External Magnetic Force in a DC Inductive Load Circuit Up to 20V-17A" in IEICE TRANSACTIONS on Electronics, vol. E102-C, no. 9, pp. 641-645, September 2019, doi: 10.1587/transele.2019EMS0001.
Abstract: When AgSnO₂ contacts were operated to break an inductive DC load current of 14V-12A, 20V-7A or 20V-17A at a contact opening speed of 10mm/sec or slower, application of an external magnetic field resulted in reductions in break arc durations even without magnetic blowing. Simple estimation of Lorentz force to be applied onto arc column revealed that a certain minimum magnitude of Lorentz force seems to be required for initiating arc blowing. Certain relationships between the Lorentz force magnitude and the timing of metallic-to-gaseous phase transition were also found to exist.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2019EMS0001/_p

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@ARTICLE{e102-c_9_641,
author={Seika TOKUMITSU, Makoto HASEGAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Relationships between Break Arc Behaviors of AgSnO2 Contacts and Lorentz Force to be Applied by an External Magnetic Force in a DC Inductive Load Circuit Up to 20V-17A},
year={2019},
volume={E102-C},
number={9},
pages={641-645},
abstract={When AgSnO₂ contacts were operated to break an inductive DC load current of 14V-12A, 20V-7A or 20V-17A at a contact opening speed of 10mm/sec or slower, application of an external magnetic field resulted in reductions in break arc durations even without magnetic blowing. Simple estimation of Lorentz force to be applied onto arc column revealed that a certain minimum magnitude of Lorentz force seems to be required for initiating arc blowing. Certain relationships between the Lorentz force magnitude and the timing of metallic-to-gaseous phase transition were also found to exist.},
keywords={},
doi={10.1587/transele.2019EMS0001},
ISSN={1745-1353},
month={September},}

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TY - JOUR
TI - Relationships between Break Arc Behaviors of AgSnO2 Contacts and Lorentz Force to be Applied by an External Magnetic Force in a DC Inductive Load Circuit Up to 20V-17A
T2 - IEICE TRANSACTIONS on Electronics
SP - 641
EP - 645
AU - Seika TOKUMITSU
AU - Makoto HASEGAWA
PY - 2019
DO - 10.1587/transele.2019EMS0001
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E102-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2019
AB - When AgSnO₂ contacts were operated to break an inductive DC load current of 14V-12A, 20V-7A or 20V-17A at a contact opening speed of 10mm/sec or slower, application of an external magnetic field resulted in reductions in break arc durations even without magnetic blowing. Simple estimation of Lorentz force to be applied onto arc column revealed that a certain minimum magnitude of Lorentz force seems to be required for initiating arc blowing. Certain relationships between the Lorentz force magnitude and the timing of metallic-to-gaseous phase transition were also found to exist.
ER -