{"title":"功率因数对Ag-W电接触断路器劣化的影响","authors":"H. Furtado, P. Mocarzel, V. Silveira","doi":"10.1109/HOLM.1991.170801","DOIUrl":null,"url":null,"abstract":"Ag-W contacts were evaluated as to their durability by electrical tests, according the IEC 157-1/73, applying different values of power factor. Such contacts were assembled into 30-A single-pole thermomagnetic circuit breakers. The morphology evolution of the arc affected zone was analyzed after 1000, 3000, and 6000 on/off switching cycles with scanning electron microscopy. Based on these results, the contact performances were compared and the influence of the power factor on the degradation of Ag-W contacts of circuit breakers was established.<<ETX>>","PeriodicalId":368900,"journal":{"name":"Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Influence of the power factor on the degradation of Ag-W electrical contact circuit-breakers\",\"authors\":\"H. Furtado, P. Mocarzel, V. Silveira\",\"doi\":\"10.1109/HOLM.1991.170801\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ag-W contacts were evaluated as to their durability by electrical tests, according the IEC 157-1/73, applying different values of power factor. Such contacts were assembled into 30-A single-pole thermomagnetic circuit breakers. The morphology evolution of the arc affected zone was analyzed after 1000, 3000, and 6000 on/off switching cycles with scanning electron microscopy. Based on these results, the contact performances were compared and the influence of the power factor on the degradation of Ag-W contacts of circuit breakers was established.<<ETX>>\",\"PeriodicalId\":368900,\"journal\":{\"name\":\"Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts\",\"volume\":\"14 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/HOLM.1991.170801\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/HOLM.1991.170801","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Influence of the power factor on the degradation of Ag-W electrical contact circuit-breakers
Ag-W contacts were evaluated as to their durability by electrical tests, according the IEC 157-1/73, applying different values of power factor. Such contacts were assembled into 30-A single-pole thermomagnetic circuit breakers. The morphology evolution of the arc affected zone was analyzed after 1000, 3000, and 6000 on/off switching cycles with scanning electron microscopy. Based on these results, the contact performances were compared and the influence of the power factor on the degradation of Ag-W contacts of circuit breakers was established.<>
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