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IEEE Electrical Insulation Magazine

Issue 4 • July-Aug. 1991

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Displaying Results 1 - 5 of 5
  • Partial discharge. VII. Practical techniques for measuring PD in operating equipment

    Publication Year: 1991, Page(s):9 - 19
    Cited by:  Papers (61)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (972 KB)

    For pt.VI see ibid., vol.7, no.3, p.9 (1991) Online partial-discharge (PD) tests for monitoring the condition of the solid dielectric insulation in high-voltage equipment are discussed. Sources of external electrical noise are identified, as are attributes of PD and noise that are helpful in drawing distinctions between them. Methods for distinguishing between PD and noise are described. They are ... View full abstract»

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  • Accelerated life testing of EPR-insulated underground cable

    Publication Year: 1991, Page(s):21 - 26
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (547 KB)

    A description is given of an accelerated cable life test developed by R. Lyle and J.W. Kirkland (see IEEE Trans. on power apparatus and systems, vol. PAS-00, p.3765, 1981). The use of the method to study medium-voltage ethylene-propylene rubber (EPR) insulation for underground distribution is reported. The program began with the testing of commercially available cable insulated with crosslinked po... View full abstract»

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  • Flexible laminates for electrical insulation and conduction. I. Conventional composites

    Publication Year: 1991, Page(s):27 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB)

    A classification system for flexible composite constructions is presented. The properties to be considered in matching materials and applications are identified. The more common types of electrical equipment in which flexible laminates are used, together with the specific uses that they serve are also identified. It is noted that at present there are no standard laboratory methods for evaluating t... View full abstract»

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  • Insulation enhancement with heat-shrinkable components. III. Shielded power cable

    Publication Year: 1991, Page(s):31 - 40
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1009 KB)

    For pt.II see ibid., vol.7, no.3, p.16 (1991). Heat-shrinkable accessories for shielded power cable, including details of the necessary components for reliable terminations and joints, are described. The key functions of terminations are outlined, and the requirements for stress control, external leakage insulation, and environmental sealing and how they are met and examined. A similar discussion ... View full abstract»

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  • Magnet wire enamels-which one?

    Publication Year: 1991, Page(s):61 - 64
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1057 KB)

    The factors involved in the selection of a magnet wire enamel are explored. Three categories of application are discussed: motors, transformers and open coils, and encapsulated coils. Magnet wire tests are reviewed. The influence of manufacturer requirements on wire selection and the requirements for runnability of magnet wire are examined. Enamel types and their properties are tabulated. Applicat... View full abstract»

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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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