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All Technical Committee Conferences (Searched in: Recent 10 Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMD | 2025-02-28 16:05 |
Tokyo | NIT (Tokyo) | Influence of power supply voltage,load inductance and ambient gas on arc discharge in breaking contacts Yuto Kurokawa, Makoto Takanezawa, Takahiro Ueno, Kiyoshi Yoshida (NIT)  EMD2024-44 |
The effects of power supply voltage, load inductance, and surrounding gas on arc discharge when electrical contacts are ... [more] | EMD2024-44 pp.71-76 |
| EMD | 2024-12-11 14:20 |
Fukuoka | JR HAKATA CITY (Fukuoka) | Influence of Ambient Gas and Load Condition on Various Characteristics of Electromagnetic Contactor in AC Power Supply Kiyoshi Yoshida, Makoto Takanezawa, Ueno Takahiro, Kouichiro Sawa (NIT) EMD2024-24 |
水素は直流遮断に非常に効果的であることはよく知られているが、交流遮断ではどのように作用するかは不明である。 本論文では、空気中および水素ガス中で電磁接触器を開路する際のアーク放電を調べた。電源電圧はAC 100V -50Hz、閉接点電流は... [more] |
EMD2024-24 pp.17-22 |
| EMD | 2024-03-01 14:40 |
Chiba | (Chiba) | Effects of inductance and surrounding gas on DC break arc discharge Shion Ozaki, Kiyoshi Yoshida (NIT) EMD2023-43 |
The effects of resistive load and inductance on arc discharge during DC power cut-off were investigated. A small electro... [more] | EMD2023-43 pp.25-29 |
| EMD | 2024-03-01 15:00 |
Chiba | (Chiba) | Effect of magnets on arc discharge at low DC voltage Yuki Yokohari, Ryo Watanabe, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2023-44 |
In this study, we conducted experiments using a device that opens electrical contacts at a constant speed. Previous stud... [more] | EMD2023-44 pp.30-35 |
| EMD | 2024-03-01 16:15 |
Chiba | (Chiba) | Automatic contact resistance measurement of electrical contacts operating in various atmospheres Tomoito Ito, Yuto Mukai, Kiyoshi Yoshida (NIT) EMD2023-47 |
The purpose of this report was to experiment to see how various atmospheres affect the contact resistance of electrical ... [more] | EMD2023-47 pp.46-51 |
| EMD | 2023-03-03 16:00 |
Saitama | NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Various Characteristics of Arc Discharge Generated in DC Toggle Switches Masaya Harada, Hiroto Kanemoto, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-30 |
In this study, using a commercially available DC toggle switch, the same load conditions as in past experiments were use... [more] | EMD2022-30 pp.52-57 |
| EMD | 2023-03-03 16:40 |
Saitama | NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Influence of load inductance and ambient gas on arc discharge generated in AC power Tsubasa Tamura, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-32 |
The effect of load inductance on resistive load and inductive load (power factor )on arc discharge at AC power interrup... [more] | EMD2022-32 pp.64-69 |
| EMD | 2023-03-03 16:55 |
Saitama | NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Automatic measurement system for contact resistance of electric contact
-- Improvement of the auto range -- Masato Fujisaki, Ayumu Hashizume, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-33 |
In this report, we improve a system that automatically sets the optimum input voltage range for each measurement (hereaf... [more] | EMD2022-33 pp.70-75 |
| EMD | 2022-03-04 14:40 |
Online | 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 |
| EMD | 2022-03-04 15:00 |
Online | Online (Online) | Effect of inductance and magnetic blowout on DC arc discharge when contacts opened Yuuto Waragai, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2021-20 |
DC current switching has been getting important as DC grid systems and electrical vehicles have been more popular. As we... [more] | EMD2021-20 pp.31-36 |
| EMD | 2021-03-08 13:45 |
Online | Online (Online) | Effect of ambient gas on break arc in AC power supply Hiroto Takano, Kotaro Nakashima, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2020-31 |
The electromagnetic contactor was opened and closed in air or in hydrogen. The arc duration ta, arc energy Ea, and arc ... [more] | EMD2020-31 pp.12-17 |
| EMD | 2021-03-08 14:20 |
Online | 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 (Hokkaido) | 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 (Chiba) (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 16:20 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (Chiba) (Cancelled but technical report was issued) |
Influence on Various Characteristics with and without Magnet in DC Electromagnetic Contactor Akira Iwanami, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-70 |
An experiment was conducted on a DC electromagnetic contactor with a structure in which the arc was blown out by the mag... [more] | EMD2019-70 pp.57-60 |
| EMD | 2020-03-06 16:50 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (Chiba) (Cancelled but technical report was issued) |
Influence of Ambient Gas on Breaking Arc Discharge of Electromagnetic contactor
-- Effect of Gas Pressure and Current -- Sota Nagase, Yoshiki Yamamoto, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-72 |
The electromagnetic contactor was opened and closed in air or in hydrogen. The arc duration ta, arc energy Ea, arc exti... [more] | EMD2019-72 pp.65-70 |
| EMD | 2020-01-17 14:55 |
Kanagawa | Rental hall Shonan Hiratsuka (Kanagawa) | Influence of Ambient Gas and Pressure on Break Arc Characteristics in Alternating Current Yoshiki Yamamoto, Sota Nagase, Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & System) EMD2019-50 |
Arc discharge at break was generated in the electromagnetic contactor in the air and hydrogen. The arc duration ta, the ... [more] | EMD2019-50 pp.11-16 |
| EMD | 2019-05-17 15:50 |
Miyagi | Cyberscience Center, Tohoku University (Miyagi) | Influence of ambient gas on arc duration and energy of electromagnetic contactor in AC power supply Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2019-6 |
Arc discharge at break was generated in the electromagnetic contactor in the air and hydrogen. The arc duration ta, the ... [more] | EMD2019-6 pp.29-34 |
| EMD | 2019-03-01 14:00 |
Tokyo | (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 14:15 |
Tokyo | (Tokyo) | Influence of ambient gas on various characteristics of break arc for electromagnetic contactor with AC power supply Igarashi Takahiro, Kumagai Fuuma, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2018-68 |
Arc discharge at break was generated in the electromagnetic contactor in the atmosphere and hydrogen. The arc duration t... [more] | EMD2018-68 pp.47-52 |
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