Pub Date : 1982-06-01DOI: 10.1109/EIC.1982.7464433
W. Dunbar
Tests that distinguish encapsulation materials for high-voltage power supplies are discussed in this paper and include voltage breakdown, concentric-cylinder, and miniwound transformer evaluation. These tests all yield information on the ability of encapsulation materials to meet high-stress electrical and differential thermal requirements common to high-voltage power supplies. In addition, tests with miniwound transformers evaluate the ability of encapsulation materials to fill microvoids of intricate designs and protect the device from high-voltage and differential thermal stresses.
{"title":"High voltage power supply materials evaluation","authors":"W. Dunbar","doi":"10.1109/EIC.1982.7464433","DOIUrl":"https://doi.org/10.1109/EIC.1982.7464433","url":null,"abstract":"Tests that distinguish encapsulation materials for high-voltage power supplies are discussed in this paper and include voltage breakdown, concentric-cylinder, and miniwound transformer evaluation. These tests all yield information on the ability of encapsulation materials to meet high-stress electrical and differential thermal requirements common to high-voltage power supplies. In addition, tests with miniwound transformers evaluate the ability of encapsulation materials to fill microvoids of intricate designs and protect the device from high-voltage and differential thermal stresses.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131142717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1982-06-01DOI: 10.1109/EIC.1982.7464445
G. Huttlin, A. Lelis, A. G. Stewart
Surface flashover characteristics of Dow-Corning type 704 diffusion-pump oil (DC-704) were measured to determine the suitability of this fluid as a vacuum barrier in pulse-power accelerators. These experiments were conducted on an Ion Physics Corporation FX-45 pulse generator, which provided 28-ns (FWHM) pulses in the 500- to 1000-kV range. These pulses went to either a resistive load or a field-emission diode via a vacuum-insulated coaxial transmission line partially filled with the oil. To date, almost 400 pulses have been fired and fields over 200-kV/cm have been sustained. For instances where the oil surface did flash over, open-shutter photographs recorded the spark channels. Since their probability did not show a strong field dependence, we believe that flashovers at these levels were due to spurious phenomena.
{"title":"The vacuum flashover of Dow-Corning type 704 diffusion-pump oil","authors":"G. Huttlin, A. Lelis, A. G. Stewart","doi":"10.1109/EIC.1982.7464445","DOIUrl":"https://doi.org/10.1109/EIC.1982.7464445","url":null,"abstract":"Surface flashover characteristics of Dow-Corning type 704 diffusion-pump oil (DC-704) were measured to determine the suitability of this fluid as a vacuum barrier in pulse-power accelerators. These experiments were conducted on an Ion Physics Corporation FX-45 pulse generator, which provided 28-ns (FWHM) pulses in the 500- to 1000-kV range. These pulses went to either a resistive load or a field-emission diode via a vacuum-insulated coaxial transmission line partially filled with the oil. To date, almost 400 pulses have been fired and fields over 200-kV/cm have been sustained. For instances where the oil surface did flash over, open-shutter photographs recorded the spark channels. Since their probability did not show a strong field dependence, we believe that flashovers at these levels were due to spurious phenomena.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122075940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1978-06-01DOI: 10.1109/EIC.1978.7463635
S. Studniarz, T. Dakin
Cast epoxy resins are being used in various app1ications such as high voltage conductor supports in compressed gas systems, high voltage bushings, and instrument transformers. In some cases the operating electric stress through the resin is sufficiently high to support partial discharges in series gas gaps or cavities, if they exist and are large enough.
{"title":"The voltage endurance of cast epoxy resin-II","authors":"S. Studniarz, T. Dakin","doi":"10.1109/EIC.1978.7463635","DOIUrl":"https://doi.org/10.1109/EIC.1978.7463635","url":null,"abstract":"Cast epoxy resins are being used in various app1ications such as high voltage conductor supports in compressed gas systems, high voltage bushings, and instrument transformers. In some cases the operating electric stress through the resin is sufficiently high to support partial discharges in series gas gaps or cavities, if they exist and are large enough.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122372794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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