T. Mori, Y. Wada, T. Hayashi, M. Kakizoe, F. Matsumoto, S. Masuda
{"title":"低压大容量断路接触器的一种新型断路方法","authors":"T. Mori, Y. Wada, T. Hayashi, M. Kakizoe, F. Matsumoto, S. Masuda","doi":"10.1109/IAS.1991.178089","DOIUrl":null,"url":null,"abstract":"A method was derived to suppress the blowoff of a hot gas from an arc chamber and to shorten arcing time in the interruption of overcurrents. The blowoff of the hot gas is suppressed by cooling with a porous metal plate attached in front of gas-exhausting holes of an arc chamber. From heat analysis, it is estimated that the temperature of the hot gas passing through the porous metal plate is lowered by about 95%. Arcing time is shortened by a unique commutation electrode and arc runner. In the interruption of a current of 6 kA at a 480 V circuit, the maximum arcing time is shortened by about 40%. From observation by a high-speed framing camera, it is concluded that the shortening of arcing time is due to an effective arc-drive by the commutation electrode and arc runner. This method has been applied to contactors of 600 A and 800 A frames having the maximum-rated operational voltage of 660 V.<<ETX>>","PeriodicalId":294244,"journal":{"name":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","volume":"55 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1991-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A new interruption method for low-voltage, high-capacity, air-break contactors suppressing the blowoff of a hot gas\",\"authors\":\"T. Mori, Y. Wada, T. Hayashi, M. Kakizoe, F. Matsumoto, S. Masuda\",\"doi\":\"10.1109/IAS.1991.178089\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A method was derived to suppress the blowoff of a hot gas from an arc chamber and to shorten arcing time in the interruption of overcurrents. The blowoff of the hot gas is suppressed by cooling with a porous metal plate attached in front of gas-exhausting holes of an arc chamber. From heat analysis, it is estimated that the temperature of the hot gas passing through the porous metal plate is lowered by about 95%. Arcing time is shortened by a unique commutation electrode and arc runner. In the interruption of a current of 6 kA at a 480 V circuit, the maximum arcing time is shortened by about 40%. From observation by a high-speed framing camera, it is concluded that the shortening of arcing time is due to an effective arc-drive by the commutation electrode and arc runner. This method has been applied to contactors of 600 A and 800 A frames having the maximum-rated operational voltage of 660 V.<<ETX>>\",\"PeriodicalId\":294244,\"journal\":{\"name\":\"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting\",\"volume\":\"55 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1991-09-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IAS.1991.178089\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IAS.1991.178089","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A new interruption method for low-voltage, high-capacity, air-break contactors suppressing the blowoff of a hot gas
A method was derived to suppress the blowoff of a hot gas from an arc chamber and to shorten arcing time in the interruption of overcurrents. The blowoff of the hot gas is suppressed by cooling with a porous metal plate attached in front of gas-exhausting holes of an arc chamber. From heat analysis, it is estimated that the temperature of the hot gas passing through the porous metal plate is lowered by about 95%. Arcing time is shortened by a unique commutation electrode and arc runner. In the interruption of a current of 6 kA at a 480 V circuit, the maximum arcing time is shortened by about 40%. From observation by a high-speed framing camera, it is concluded that the shortening of arcing time is due to an effective arc-drive by the commutation electrode and arc runner. This method has been applied to contactors of 600 A and 800 A frames having the maximum-rated operational voltage of 660 V.<>
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