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Electrical Insulation Magazine, IEEE

Issue 3 • Date May-June 1988

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Displaying Results 1 - 7 of 7
  • Partial discharge measurement and interpretation

    Publication Year: 1988 , Page(s): 10 - 23
    Cited by:  Papers (27)  |  Patents (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1221 KB)  

    An overview is given of partial discharge patterns, their evaluation, and determination of their origin. Some brief comparisons of test equipment considered to be of general interest are made. The intent is to assist practitioners in the interpretation of results as well as in the accurate discrimination between true partial discharges within an insulating structure and other unwanted conduction o... View full abstract»

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  • Advances in electronic ceramic materials in Japan

    Publication Year: 1988 , Page(s): 24 - 30
    Request Permissions | Click to expandAbstract | PDF file iconPDF (654 KB)  

    A survey is provided of Japanese research on ceramic materials for substrates, microwave dielectric ceramics, piezoelectric ceramics, semiconducting ceramics, and superconducting ceramics. Novel processing technologies are described, covering the use of amorphous materials, superfine powders, lamination, multilayer thin films, porous ceramics, and superlattices.<> View full abstract»

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  • Advances in heat-shrink technology

    Publication Year: 1988 , Page(s): 31 - 34
    Cited by:  Patents (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (469 KB)  

    The basic technology and early developments of heat-recoverable polymers formed by so-called radiation cross-linking are described. Systems for wire identification and shielding are discussed. New markets and recent and imminent advances are examined.<> View full abstract»

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  • Corona: insulation's silent enemy. I

    Publication Year: 1988 , Page(s): 41 - 45
    Cited by:  Papers (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (609 KB)  

    This tutorial defines corona and explains how it forms. Corona extinction voltage is discussed. Terminal corona charge versus corona energy is treated. The effects of corona are examined.<> View full abstract»

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  • Improved diagnostics for characterizing insulation

    Publication Year: 1988 , Page(s): 46 - 47
    Request Permissions | Click to expandAbstract | PDF file iconPDF (191 KB)  

    The application of nonelectrical diagnostic techniques to analyze solid dielectric insulation, especially from aged cable, was the objective of two projects initiated by the Electric Power Research Institute (EPRI). These projects, RP-7897-01 at the University of Connecticut (UConn) and RP-7897-02 at Institute d'Recherche d'Hydroquebec (IREQ), which were started in the mid-1980s and are now reachi... View full abstract»

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  • Comments on 'Compatibility-the neglected factor in insulation evaluation' by W.B. Penn (DC machine insulation)

    Publication Year: 1988
    Request Permissions | Click to expandAbstract | PDF file iconPDF (107 KB)  

    For original paper see ibid., vol.4, no.2, p.27 (1988). The commenter addresses statements by the author of the above paper concerning silicone and rapid brushwear in DC machines. This problem, which was noted several years ago, is due to improper curing of silicone products. He maintains that when proper curing is completed, silicone varnishes are the best materials to use in totally enclosed DC ... View full abstract»

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  • Comments on 'Transient method for measuring thermal conductivity' by J.D. Richards

    Publication Year: 1988
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The EI Magazine publishes articles written by authors from industry, research institutes and academia. The articles are more practical in content than the papers published in the Transactions.

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