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IEEE Transactions on Electrical Insulation

Issue 2 • April 1979

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Displaying Results 1 - 14 of 14
  • Table of contents

    Publication Year: 1979, Page(s): c1
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  • IEEE Electrical Insulation Society

    Publication Year: 1979, Page(s): c2
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  • Static Field Breakdown of SF6-N2 Mixtures in Rod-Plane Gaps

    Publication Year: 1979, Page(s):61 - 69
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1165 KB)

    The static field breakdown and corona characteristics of SF6-N2 mixtures in non-uniform field gaps for applied voltages of positive and negative polarities are discussed. Mixtures containing 0 to 100% SF6 are studied over a pressure range of 100 to 500 kPa. The results show that for such gaps, the dielectric behavior of SF6-N2 mixtures is very similar to that of pure SF6. A discontinuity is report... View full abstract»

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  • Calculation of Discharge Inception Voltages in SF6-N2 Mixtures

    Publication Year: 1979, Page(s):70 - 76
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (861 KB)

    A simple method based on the streamer criterion [1] is proposed to calculate the discharge inception voltages in SF6-N2 mixtures with SF6 content between 1 and 100%. It is shown that the calculated values are in good agreement with experimental measurements for gaps having varying degrees of field non-uniformities. View full abstract»

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  • Flashover of Contaminated Insulators with Cylindrical Symmetry under DC Conditions

    Publication Year: 1979, Page(s):77 - 84
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2893 KB)

    A series of experiments was done to determine how contamination flashover occurs under dc conditions. It was found that polarity influenced the flashover voltage, with flashover occurring more readily for negative polarity. Several reasons are advanced to explain this, including cathode spot phenomena, and electrochemical effects. Further experiments showed electrochemical alteration of the amount... View full abstract»

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  • Dielectric Properties of Polyimide Film. II. DC Properties

    Publication Year: 1979, Page(s):85 - 93
    Cited by:  Papers (64)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    Thermally stimulated depolarization studies, in the absence and presence of applied fields, have shown that polyimide polarizes in both thermal and potential gradients. The conductivity of dry samples has been shown to be due to protons ionized from unreacted polyamic acid, while that of wet samples,1-2 orders of magnitude higher, was found to be due to residual impurity ions. View full abstract»

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  • In-Service Partial Discharge Testing of Generator Insulation

    Publication Year: 1979, Page(s):94 - 100
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3543 KB)

    Progressive degradation of high-voltage generator insulation, whether due directly to the erosive effects of internal or slot discharge or to other debilitating factors such as heat and vibration, may be detected and monitored as a function of time by in-situ partial-dischargetests. This paper describes new diagnostic test techniques for assessing the condition of generator insulation with a minim... View full abstract»

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  • Breakdown Voltage in Particle Contaminated Compressed Gases

    Publication Year: 1979, Page(s):101 - 106
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (771 KB)

    A method for calculating the breakdown voltage in particle contaminated compressed gases is proposed in this paper. The method is based on the streamer breakdown criterion. It is assumed that at breakdown voltage, the gap between the particle and the bottom electrode breaks down first, which electrically shorts the particle with the bottom electrode, and then a critical avalanche develops at the t... View full abstract»

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  • The Effect of the Number of Spacer Insulators on the Breakdown Voltage of Vacuum Insulation

    Publication Year: 1979, Page(s):107 - 110
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1360 KB)

    It was shown that when extended high voltage vacuum insulation is being considered, the effect of the number of spacer insulators on the breakdown voltage of the system has to be taken into account. Two cylindrical electrode systems with a variable number of spacers were investigated. A very distinct decrease of the breakdown voltage with the increase in the number of insulators was noted. This ef... View full abstract»

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  • Pyrolytic Boron Nitride as a Micorstrip Sbustrate Material

    Publication Year: 1979, Page(s):111 - 116
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (838 KB)

    The use of pyrolytic boron nitride (PBN) as a substrate material for microstrip integrated structures operating at microwave frequencies is investigated in this paper. Measurements on single line and coupled line structures are reported and compared with previously published theoretical work on this anisotropic material. The physical properties of PBN which affect its use as a practical substrate ... View full abstract»

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  • Calculation of Discharge Inception Voltage Due to the Presence of Voids in Power Cables

    Publication Year: 1979, Page(s):117 - 120
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Expressions are derived for the discharge inception voltage (Vi), at which discharges occur in entrained voids within the insulation of single-core cables. The influence of Vi on the shape, and location of a void has been determined for different air pressures inside the void. View full abstract»

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  • Erratum

    Publication Year: 1979, Page(s): 120
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  • Editorial policies and criteria

    Publication Year: 1979, Page(s): 120-a
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  • Information for authors

    Publication Year: 1979, Page(s): 120b
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Aims & Scope

This Transactions ceased production in 1993. The current retitled publication is  IEEE Transactions on Dielectrics and Electrical Insulation.

Full Aims & Scope