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Electrical Insulation, IEEE Transactions on

Issue 2 • Date Nov. 1965

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Displaying Results 1 - 6 of 6
  • Table of contents

    Page(s): c1
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    Freely Available from IEEE
  • IEEE Electrical Insulation Group

    Page(s): c2
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    Freely Available from IEEE
  • Editorial

    Page(s): 29
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    Freely Available from IEEE
  • Some Aspects of Dielectric Breakdown of Solids

    Page(s): 30 - 37
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    The electric strengths of sodium chloride, polythene, and polymethyl methacrylate were measured using direct and impulse voltages at room temperature. The effects of specimen thickness, electrode radius, and rate of rise of applied field are different in degree from material to material indicating the importance of prebreakdown conditions. It is suggested that the final breakdown mechanism is of the avalanche type, heating by prebreakdown current and the formation of space charges being factors affecting its occurrence. View full abstract»

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  • Thermal Endurance of Polyester Enameled Wires Using Twisted Wire Specimens. Statistical Analysis of Test Results

    Page(s): 38 - 44
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    Thermal endurance tests to AIEE Standard 57 [1] have been performed in six laboratories each using self-prepared varnished specimens made from a common sample of polyester enameled wire and polyester varnish. The results have been analysed to test the hypothesis of the departure from linearity of the relationship between the logarithm of life and the inverse of the absolute temperature, with the object of subsequent limited extrapolation. Two features of this paper are the inclusion of a distribution-free test for further confirmation of the significance of the departure from linearity, and the presentation of the extrapolated results in the additional form of estimated temperatures for a number of specified mean lives. The variation between the results of different laboratories and methods involving a reduction in testing time are considered. Comparison is made with previous work [2] undertaken in six laboratories on PVA enameled wire specimens, prepared and impregnated with an oil-modified phenolic varnish by a single laboratory, and with published AIEE results. View full abstract»

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  • Impulse Voltage Tests on Air and C3F8

    Page(s): 44 - 48
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    There is continual need for the evaluation of the electric strength of the various new gases that are becoming available and their comparison with the electric strength of some standardsuch as air. The impulse voltage strength of a new gas is not easily and quickly obtained, yet is essential in the proper design of equipment using these gases. It is the purpose of this paper to describe briefly the equipment that was used for this impulse voltage testing work, and to record some impulse voltage breakdown data on octofluoropropane (C3F8) and its comparison to air. View full abstract»

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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