Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EMD |
2023-12-22 14:50 |
Tochigi |
Teikyo University |
Numerical Analysis of Hole Diameter Dependence of Airflow Distribution between Electrical Contacts with an Airflow Jet Hole Koki Kameyama, Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-36 |
The authors proposed a method to shorten the duration of break arcs by ejecting airflow from the surface of an electrica... [more] |
EMD2023-36 pp.25-29 |
EMD |
2023-06-30 13:10 |
Hokkaido |
Chitose Arcadia Plaza |
Effect of position and shape of contacts on the moving characteristics and duration of break arcs blown by airflow from inside a contact Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-1 |
In a resistive circuit with a DC power supply voltage of 100 V and a circuit current of 10 A, a silver contact pair with... [more] |
EMD2023-1 pp.1-6 |
EMD |
2023-03-03 12:55 |
Saitama |
NIT and Online (Primary: On-site, Secondary: Online) |
Analysis of surface topography before and after contact for silver electrical contacts Kosuke Shinomura, Junya Sekikawa (Shizuoka Univ.) EMD2022-21 |
In this study, to investigate the deformation state of contact surfaces of silver contacts, the shape of the contact sur... [more] |
EMD2022-21 pp.7-10 |
EMD |
2022-03-04 14:40 |
Online |
Online |
Improvement and measurement of automatic contact resistance measurement system for electrical contacts Ryo Oyamada, Syun Kanaya, Kiyoshi Yoshida (NIT) EMD2021-19 |
In our laboratory, we made an automatic contact resistance measurement system for electrical contacts using LabVIEW. Ho... [more] |
EMD2021-19 pp.25-30 |
R, EMD |
2022-02-10 16:00 |
Online |
Online |
Break arcs magnetically blown-out in a 48VDC/300A resistive circuit at constant opening speeds Haruko Yazaki, Junya Sekikawa (Shizuoka Univ.) R2021-46 EMD2021-14 |
Dependences of arc length just before extinction L and contact gap at arc extinction d on contact opening speed v are st... [more] |
R2021-46 EMD2021-14 pp.18-23 |
EMD |
2021-03-08 14:20 |
Online |
Online |
Continuous open and close test of contact resistance of electromagnetic contactor Yoshihiro Sudo, Kohei Chiba, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2020-32 |
In this study, the contact resistance when a small current was applied at DC5V, was automatically measured. In the expe... [more] |
EMD2020-32 pp.18-22 |
EMD |
2020-07-17 15:00 |
Hokkaido |
Chitose-Arcadia-Plaza |
Production of automatic measurement system for contact resistance and its measurement results
-- Contact resistance when switching 1 million times under small load condition -- Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji FA Comp. & Sys.) EMD2020-6 |
In this study, we constructed an automatic measurement system for the contact resistance of electrical contacts. This sy... [more] |
EMD2020-6 pp.17-22 |
EMD |
2020-03-06 16:05 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Cancelled but technical report was issued) |
Production of Automatic Contact Resistance Measurement System for Electrical Contacts Tatsuya Onodera, Sho Kashiwabara, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-69 |
In this study, we constructed an automatic measurement system for the contact resistance of electrical contacts. This sy... [more] |
EMD2019-69 pp.51-56 |
EMD |
2020-03-06 16:35 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Cancelled but technical report was issued) |
Influence of Magnetic Flux Density and Breaking Speed on Magnetic Blowout of DC Arc Discharge Hiroki Yamauchi, Hayato Watanabe, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-71 |
The arc duration time ta and the arc energy Ea when a magnetic flux was applied to the electrical contact were measured.... [more] |
EMD2019-71 pp.61-64 |
EMD, R |
2020-02-14 14:35 |
Shizuoka |
|
Observations of break arc behaviors of AgSnO2 contacts in a DC inductive load under application of an external magnetic field Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Science & Technology) R2019-56 EMD2019-56 |
When AgSnO2 contacts were operated to break an inductive DC load circuit up to 20V-17A with an applied external magnetic... [more] |
R2019-56 EMD2019-56 pp.13-16 |
EMD |
2020-01-17 14:30 |
Kanagawa |
Rental hall Shonan Hiratsuka |
Sliding characteristics of copper contacts by Molybdenum disulfide shot testment Tatsuro Iizuka, Yuki Kawashima, Syo Ogata, Yoshitada Watanabe, Takahiro Ueno, Koichiro Sawa (NIT) EMD2019-49 |
The electric sliding contact mechanism is a mechanism for energizing a moving object from a stationary object.
It is us... [more] |
EMD2019-49 pp.7-10 |
EMD |
2020-01-17 15:35 |
Kanagawa |
Rental hall Shonan Hiratsuka |
Arc movement observation of DC inductive break arcs of AgSnO2 contacts up to 20V-17A under external magnetic field application Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Sci.&Tech.) EMD2019-51 |
AgSnO2 contacts were operated to break an inductive DC load circuit of 14V-7A, 14V-12A, 20V-7A, or 20V-17A with an appli... [more] |
EMD2019-51 pp.17-21 |
EMD |
2019-12-13 14:35 |
Tokyo |
|
Dependence of arc length just before arc extinction on magnetic flux density when break arcs are blown-out in a 48VDC/50A-200A resistive circuit Kenshi Hamamoto, Junya Sekikawa (Shizuoka Univ.) EMD2019-43 |
Break arcs were generated in a 48VDC resistive circuit and blown-out by transverse magnetic field. Circuit current when ... [more] |
EMD2019-43 pp.1-6 |
EMD |
2019-12-13 15:40 |
Tokyo |
|
Characteristics of break arcs blown-out in a 500VDC/10A circuit when moving range of arc spots is changed by shape of insulated silver pipes Taiju Masuda, Junya Sekikawa (Sizuoka Univ.) EMD2019-45 |
Break arcs are generated and magnetically blown-out by transverse magnetic field in a 500VDC/10A resistive circuit. Silv... [more] |
EMD2019-45 pp.13-18 |
EMD |
2019-12-13 16:30 |
Tokyo |
|
Arc energy calculation in re-striking phenomena in break operations of AgSnO2 contacts in inductive DC load conditions up to 20V-17A Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Sci.&Tech.) EMD2019-47 |
AgSnO2 contacts were operated to break an inductive DC load circuit of 14V-7A, 14V-12A, 20V-7A, or 20V-17A with an appli... [more] |
EMD2019-47 pp.25-30 |
EMD |
2019-05-17 13:35 |
Miyagi |
Cyberscience Center, Tohoku University |
Non-Arcing Circuit Breaking Phenomena in Electrical Contacts due to Dark Bridge Hiroyuki Ishida (TBGU) EMD2019-1 |
In this paper, experimental data of non-arcing circuit breaking phenomena in electrical contacts are presented. A dark b... [more] |
EMD2019-1 pp.1-6 |
EMD |
2019-03-01 10:35 |
Tokyo |
|
A study in influences of external magnetic field on break arc characteristics of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A up to 20V-17A Seika Tokumitsu, Makoto Hasegawa (Chitose Inst. of Science & Technology) EMD2018-59 |
For the purpose of investigating influences of application of an external magnetic field on shortenings of break arc dur... [more] |
EMD2018-59 pp.1-6 |
EMD |
2019-03-01 14:00 |
Tokyo |
|
Contact reliability of electrical contacts by continuous make/break test of electromagnetic contactor Ikarashi Masanari, Ogaki Asuka, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2018-67 |
In this research, we conducted 5 million times of opening and closing experiments with contacts under minute load condit... [more] |
EMD2018-67 pp.41-46 |
EMD |
2019-03-01 14:45 |
Tokyo |
|
Influence of current and magnetic flux density on magnetic blow-out on arc discharge at breaking of electrical contacts Mano Kenta, Koichiro Sawa, KIyoshi Yoshida (NIT) EMD2018-69 |
Recently, applications using DC high voltage are increasing. In the DC circuit, there is a method called "magnetic blow-... [more] |
EMD2018-69 pp.53-57 |
EMD |
2019-03-01 16:00 |
Tokyo |
|
Arc Erosion of Brush at Sliding Contacts between Cu commutator and Carbon Brush Youdai Suzuki, Kaito Niiya, Kouichiro Sawa, Takahiro Ueno (NIT) EMD2018-73 |
Compact DC motors are used for driving fuel pumps used in automobiles due to their superior cost advantages. From the re... [more] |
EMD2018-73 pp.75-80 |