講演抄録/キーワード |
講演名 |
2008-11-16 13:20
Electric Measurement of Melting Phenomena for Breaking Relay Contacts ○Noboru Wakatsuki・Nobuo Takatsu・Masahiro Oikawa(Ishinomaki Senshu Univ.) EMD2008-96 エレソ技報アーカイブへのリンク:EMD2008-96 |
抄録 |
(和) |
Using the transient current switch circuit in parallel with the energizing switching contacts for timely control of breaking operations, the increase of contact voltage is suppressed at the last stage of the breaking of electric contacts. Breaking contact voltage Vc and current Ic of electromagnetic relays with Ag contacting electrodes were measured with 12.5~50 V and 0.1~20 A for two hinge springs (Spring constants; 2 N/mm and 0.2 N/mm). The current-decreasing process was clearly measured at the melting voltage Um. After Vc=Um, the breaking time of contact current did not depend on mechanical motion controlled by the two hinge springs and energizing power-supply voltage, but depended on the contact current. The residue of melt electrode was observed optically as a white fusion spot, with radius depending on the energizing current. |
(英) |
Using the transient current switch circuit in parallel with the energizing switching contacts for timely control of breaking operations, the increase of contact voltage is suppressed at the last stage of the breaking of electric contacts. Breaking contact voltage Vc and current Ic of electromagnetic relays with Ag contacting electrodes were measured with 12.5~50 V and 0.1~20 A for two hinge springs (Spring constants; 2 N/mm and 0.2 N/mm). The current-decreasing process was clearly measured at the melting voltage Um. After Vc=Um, the breaking time of contact current did not depend on mechanical motion controlled by the two hinge springs and energizing power-supply voltage, but depended on the contact current. The residue of melt electrode was observed optically as a white fusion spot, with radius depending on the energizing current. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Transient current switch circuit / Melting voltage / Electromagnetic relay / Arc ignition / Electric contacts / / / |
文献情報 |
信学技報, vol. 108, no. 296, EMD2008-96, pp. 125-128, 2008年11月. |
資料番号 |
EMD2008-96 |
発行日 |
2008-11-08 (EMD) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
EMD2008-96 エレソ技報アーカイブへのリンク:EMD2008-96 |