{"title":"A technique for the measurement of dielectric loss of polyethylene insulated coaxial cables","authors":"D. Walters","doi":"10.1109/CEIDP.1982.7726544","DOIUrl":null,"url":null,"abstract":"The polyethylene dielectrics used in underwater communication cables have extremely low power factors at transmission frequencies: typically between 60 × 10−6 and 120 × 10−6 at 45 MHz, It is important to be able to measure the loss of the dielectric accurately before, during and after cable manufacture in order to determine the effects of contamination, processing, and working environment. Until now loss measurements with the required accuracy (∼1μR) could only be made using thin, circular specimens of the material as in the method described by Hartshorn and Ward {1}, Although this technique has given extremely accurate results, particularly as applied in the apparatus developed by Reddish and Buckingham {2}, the disadvantages of having to use flat moulded specimens as opposed to pieces of actual cable are obvious.","PeriodicalId":301436,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1982","volume":"61 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1982","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.1982.7726544","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The polyethylene dielectrics used in underwater communication cables have extremely low power factors at transmission frequencies: typically between 60 × 10−6 and 120 × 10−6 at 45 MHz, It is important to be able to measure the loss of the dielectric accurately before, during and after cable manufacture in order to determine the effects of contamination, processing, and working environment. Until now loss measurements with the required accuracy (∼1μR) could only be made using thin, circular specimens of the material as in the method described by Hartshorn and Ward {1}, Although this technique has given extremely accurate results, particularly as applied in the apparatus developed by Reddish and Buckingham {2}, the disadvantages of having to use flat moulded specimens as opposed to pieces of actual cable are obvious.