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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| EMD | 2022-03-04 15:00 |
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 | 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 | 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 16:20 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (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 (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 | 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 | 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 | 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 |
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| EMD | 2019-03-01 14:15 |
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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| EMD | 2019-03-01 15:00 |
Tokyo | Influence on various characteristics such as arc duration during continuous make/break of electromagnetic contactor Hiroki Takeuchi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2018-70 |
By forming the contact portion in an airtight structure, it is possible to suppress the ejection of the arc discharge to... [more] | EMD2018-70 pp.59-62 |
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| EMD | 2018-06-15 15:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Effect of circuit conditions on various characteristics such as molten metal bridge and arc discharge of auxiliary contact for electromagnetic contactor Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-11 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2018-11 pp.19-23 |
| EMD | 2018-03-02 13:05 |
Saitama | Nippon Institute of Technology | Influence of Sealed Gases and Pressure on Arc Duration of Electromagnetic Contactor Ryoya Kaneko, Hiroki Funada, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-57 |
A electromagnetic contactor with magnets to shut off DC circuit was set in the chamber. The enclosed gases are hydrogen,... [more] | EMD2017-57 pp.1-4 |
| EMD | 2018-03-02 13:20 |
Saitama | Nippon Institute of Technology | An experiment on reliability of Auxiliary Contacts in Electromagnetic Contactor Sora Ishiwa, Kazuki Takahashi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-58 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2017-58 pp.5-8 |
| EMD | 2017-11-17 11:10 |
Tokyo | The University of Electro-Communications | Effect of arc discharge types on various characteristics and mass change in electrodes for electromagnetic contractor Kiyoshi Yoshida, Koichiro Sawa (Nippon Inst. of Tech.), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-45 |
Experiments were carried out at several voltages to clarify the influence of the voltage on various characteristics, i.e... [more] | EMD2017-45 pp.13-19 |
| EMD | 2017-05-19 14:30 |
Hokkaido | Chitose Arcadia Plaza | Various characteristics of the electromagnetic contactor when continuously make and break at below minimum arc voltage Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-2 |
The electromagnetic contactor with two pairs of Ag and Ni alloy contacts was used in this experiment,. The source volta... [more] | EMD2017-2 pp.7-11 |
| EMD | 2017-03-03 13:05 |
Chiba | Influence of Break Arc on Electrode Mass Change of Electromagnetic Contactor
-- When Sourse Voltage is Less than Minimum Arc Voltage -- Syuwa Tanaka, Yuto Yamanaka, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2016-99 |
In this experiment, the electromagnetic contactor with two pairs of Ag and Ni alloy contacts was used. The source volta... [more] | EMD2016-99 pp.1-4 |
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| EMD | 2017-03-03 13:35 |
Chiba | Influence of Sealed Gas and Pressure on Arc Duration of Electromagnetic Contactor Ryosuke Takei, Masaki Yuzawa, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2016-101 |
The electromagnetic contactor was installed in the chamber sealed with nitrogen, hydrogen, helium and clean air, and bre... [more] | EMD2016-101 pp.9-12 |
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