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IEEE Electrical Insulation Magazine

Issue 2 • March-April 1990

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Displaying Results 1 - 4 of 4
  • Electrical insulation technology for superconducting devices in Japan

    Publication Year: 1990, Page(s):7 - 15
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The abnormal voltage induced in a superconducting magnet is examined, and the need to utilize insulating materials that do not degrade electrically or mechanically at a very low temperature is demonstrated. Breakdown of the liquid helium in which most superconducting magnets are immersed is discussed. Different types of superconducting magnets are briefly described. Research activities in Japan on... View full abstract»

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  • The 'universal' dielectric response. I

    Publication Year: 1990, Page(s):16 - 22
    Cited by:  Papers (42)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (582 KB)

    A novel approach to the interpretation of the dielectric response of solids, in terms of the concept of the universal dielectric law of relaxation, is presented. The universal approach moves away from the earlier interpretations that relied heavily on the concept of distributions of relaxation times (DRTs) of Debye-like processes that are supposed to coexist in a given material and constitute a su... View full abstract»

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  • Telephone cable: overview and dielectric challenges

    Publication Year: 1990, Page(s):23 - 28
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (623 KB)

    An overview of the common types of telephone wire and cable used in the United States and of related industry specifications is provided. Common insulating materials and selected electrical and physical parameters are discussed, along with several dielectric-related problems facing the industry. One is to reduce the migration of oil from cable filling gels into the insulation, where it adversely a... View full abstract»

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  • Fundamentals-a useful index for estimating residual life of motor insulation

    Publication Year: 1990, Page(s):29 - 32
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    During the period from 1955 to 1978, the insulation system of choice for motor windings in Japan was predominantly of the polyester type. Since there are still a number of polyester-insulated motors in the field, there is a demand for a reliable means of evaluating the residual life of these units, the ultimate goal being standardization acceptable to the industry. The present state of this effort... View full abstract»

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Aims & Scope

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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Co-Editor-in-Chief
Edward Cherney

Co-Editor-in-Chief
Robert Fleming