Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

Electrical Insulation, IEEE Transactions on

Issue 3 • Date Sept. 1973

Filter Results

Displaying Results 1 - 12 of 12
  • Table of contents

    Publication Year: 1973 , Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (733 KB)  
    Freely Available from IEEE
  • IEEE Electrical Insulation Group

    Publication Year: 1973 , Page(s): c2
    Save to Project icon | Request Permissions | PDF file iconPDF (150 KB)  
    Freely Available from IEEE
  • Dielectric Breakdown in Perspex

    Publication Year: 1973 , Page(s): 73 - 75
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (614 KB)  

    Experiments have been carried out to investigate the breakdown mechanism in Perspex over a temperature range from 20 to 160°C, using impulse voltages of widely differing rise times. The electric strength was found to be sensitive to voltage rise time, reaching a maximum as the rise time is increased, but falling again at longer rise times towards the dc value. The results are discussed in terms of a model in which space charges accumulate at the electrodes, positive charges at the anode, and negative charges at the cathode. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Approach to the Voltage-Endurance Test on Electrical Insulation

    Publication Year: 1973 , Page(s): 76 - 86
    Cited by:  Papers (43)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2006 KB)  

    After examining the life-testing theories for both thermal and electrical aging, a new theory, starting from an extension of the chemical reaction one, is proposed. However, the new theory is quite different from the latter, because it ignores the aging mechanism, considering only its effects. Through this theory, electrical aging is investigated and the fundamental law governing the time behavior of electrical insulation is derived on the hypothesis that the voltage-life law has the form of an inverse-power law. This result suggests a new procedure for the voltage endurance test. Short-time dielectric strength of specimens, prestressed for different times by an ac voltage of the same value, is measured and plotted against the aging time. Using this procedure a great deal of information about the time behavior of insulating materials can be obtained in a short time. Experimental data, pertinent to plastic insulating materials for medium-and high-voltage cables, are given in support of the theory. Since the theory proposed is quite general, it can be extended to the study of aging in other systems subject to degradation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lichtenberg Figures Produced by High-Voltage Discharges in Vacuum

    Publication Year: 1973 , Page(s): 87 - 91
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2974 KB)  

    The formation of Lichtenberg figures on aluminum and titanium electrodes covered by oxide and nitride layers while being exposed to high vacuum and 100-kV (rms) 60-Hz voltage is recorded. The observations were made in the course of research on high-voltage vacuum insulation for cryocables. The Lichtenberg figures have several technological implications. They provide evidence for the occurrence of 1) focused ion beams, and 2) tangential discharges in the adsorbed layer of gas on the vacuum side of dielectric coverings on metal conductors. As Lichtenberg figures can only be produced by fast high-voltage pulses, they prove that the discharge duration was short compared with the period of the 60-Hz voltage wave. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dissipation Factor of Composite Polymer-and Oil-Insulating Structures on Extended Exposure to Simultaneous Thermal and Voltage Stress

    Publication Year: 1973 , Page(s): 92 - 97
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3383 KB)  

    The combination of a low-loss polymer film with a low-loss impregnating oil does not always give a low-loss composite insulation, particularly when the system is aged under simultaneous thermal and voltage stress. This anomalous behavior appears to be related to a loss phenomenon at the oil-to-polymer interface. For the combination of fluorinated ethylene propylene (FEP) film and polybutene oil a remarkable reduction in dissipation factor was achieved by increasing the degree of wetting at the interface. This was brought about by modifications tending to increase the surface energy of the solid (polymer) and to decrease the surface tension of the liquid (oil). The resulting system gave low and stable dissipation factors on extended aging and, in addition, did not show loss peaks as a function of voltage as observed on the original insulation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • In this issue - Technically

    Publication Year: 1973 , Page(s): 98 - 107
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | PDF file iconPDF (3500 KB)  
    Freely Available from IEEE
  • Abstracts of Electrical Insulation in Japan: January-June 1972

    Publication Year: 1973 , Page(s): 107 - 114
    Save to Project icon | Request Permissions | PDF file iconPDF (1700 KB)  
    Freely Available from IEEE
  • Discussion of "Explosion of Air-Blast Circuit Breakers Subsequent to Thermal Degradation of Auxiliary Resistor Wire Insulation"

    Publication Year: 1973 , Page(s): 114
    Save to Project icon | Request Permissions | PDF file iconPDF (185 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contributors

    Publication Year: 1973 , Page(s): 115
    Save to Project icon | Request Permissions | PDF file iconPDF (971 KB)  
    Freely Available from IEEE
  • Editorial policies and criteria

    Publication Year: 1973 , Page(s): 115-a
    Save to Project icon | Request Permissions | PDF file iconPDF (166 KB)  
    Freely Available from IEEE
  • Information for authors

    Publication Year: 1973 , Page(s): 115b
    Save to Project icon | Request Permissions | PDF file iconPDF (906 KB)  
    Freely Available from IEEE

Aims & Scope

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

Full Aims & Scope