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IEEE Transactions on Electrical Insulation

Issue 2 • Date April 1985

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Displaying Results 1 - 25 of 67
  • IEEE Transaction on Electrical Insulation

    Publication Year: 1985, Page(s): c1
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  • IEEE Electrical Insulation Society

    Publication Year: 1985, Page(s): c2
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  • Table of contents

    Publication Year: 1985, Page(s):121 - 158
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  • Eighth International Conference on Conduction and Breakdown in Dielectric Liquids

    Publication Year: 1985, Page(s): 122
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  • The 1984 H. Tropper Memorial Lecture Electronic Ppocesses in Dielectric Liquids Under Incipient Breakdown Stress

    Publication Year: 1985, Page(s):123 - 132
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1751 KB)

    The fundamental processes of charge carrier generation and motion in pure hydrocarbon liquids under high electrical stress are reviewed in the light of present knowledge of amorphous phase electronics and of the electrochemistry of electrode-dielectric interfaces. existence of quasi-free electron and equally mobile positive hole states in a liquid such as nhexane makes it possible to develop plaus... View full abstract»

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  • Drift Velocity of Hot Electrons in Liquid Ar, Kr, and Xe

    Publication Year: 1985, Page(s):133 - 137
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (589 KB)

    The drift velocity of hot electrons in liquid Ar, Kr, and Xe near their triple points ia studied using a Cohen-Lekner equation in which an inelastic depolarized electron scattering process is newly considered. The saturation of the drift velocity at the high field strength is appropriately explained. The magnitude and onset energy of the effective inelastic cross section are compared with the expe... View full abstract»

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  • Electron Thermalization in Dense Gases and Liquids: Effect of Conduction Band Formation

    Publication Year: 1985, Page(s):139 - 142
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    The yields of free ions produced by X-radiolysis were measured as functions of applied electric field strength in coexisting vapors and liquids of spherelike (methane) and rodlike (ethane) molecules at densities 0.14¿ d/dc¿2.8 (dc is that of the critical fluid). The Onsager model was used to estimate the electron thermalization distances bGP. The density normalized distance bGPd is inversely rel... View full abstract»

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  • Ion Mobility Measurements in a 50 cSt Viscosity Polydimethylsiloxane Silicone Oil

    Publication Year: 1985, Page(s):143 - 146
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (989 KB)

    Using two different time-of-flight techniques (pulse voltage and V.U.V. photon pulse) ion mobility measurements ents have been performed, at room temperature, on a purified 50 cSt polydimethylsiloxane silicone oil (Rh¿¿ne Poulenc 604 V 50). These experiments have been carried out in a cell with planparallel electrodes, for electric field strengths ranging from 0.4 to 10 kV cm-1 and for four electr... View full abstract»

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  • Hot Electron Energy Exchange in Liquid Hot Electron Energy Exchange in Liquid Xenon

    Publication Year: 1985, Page(s):147 - 152
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    Values of the energy exchange frequency vk for excess electrons in liquid xenon have been estimated from equilibrium field-dependent drift mobilities and from the relaxation of the radiation induced conductivity following a short ionizing pulse. Good agreement between the two methods is found if the mobility is taken to be dependent on the inverse first power of the electron energy, rather than th... View full abstract»

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  • Time-Dependent Space-Charge Currents in Insulators Involving Two Species with Widely Differing Mobilities

    Publication Year: 1985, Page(s):153 - 157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (586 KB)

    The space-charge-modified transport of two oppositely charged carriers under the influence of a constant applied field is discussed. A Lagrangian approach is adopted to avoid spurious numerical diffusion effects. This paper considers the situation where one of the species is so much less mobile than the other that it may be regarded as effectively at rest. The motion which ensues when a constant f... View full abstract»

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  • 9th ICDL

    Publication Year: 1985, Page(s): 158
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  • The Effect of Space Charge on DC Conduction and Light Emission in Dielectric Liquids under Non-Uniform Field

    Publication Year: 1985, Page(s):159 - 165
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1237 KB)

    Conduction current characteristics in transformer oil and n-hexane have been studied under negative pointplane electrodes. Experiments were performed with needle electrodes of various materials (W, Cu, Mo, and Ni) with various tip radii (3, 6, 10, 25, and 50 ¿m) at gap lengths of 1 to 10 mm. From the experimental results, the conduction current was found to be caused by Schottky emission affected... View full abstract»

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  • 8th ICDL Patrons

    Publication Year: 1985, Page(s): 166
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  • Field-Enhanced Dissociation, the Validity of Onsager's Theory in Surfactant Solutions

    Publication Year: 1985, Page(s):167 - 176
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1571 KB)

    This study deals with the field dissociation effect in solutions of AOT surfactant in cyclohexane, characterized by very complex ionic aggregation. Thermodynamic information on the dissociation of this electrolyte solution from conductivity measurements, together with the kinetic parameters obtained with an electrical relaxation method, are used to derive the characteristics of the mechanism of AO... View full abstract»

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  • Streaming Current Generated on a Cylindrical Electrode

    Publication Year: 1985, Page(s):177 - 181
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    In this paper we first describe applications of the streaming current generated on a cylindrical electrode, then we analyzed the fundamental aspect of the phenomenon. In a theoretical study we compute the temporal development of the space charge density in a liquid in contact with an electrode under an electric field. Then the space charge density convected in a film of liquid streaming down on a ... View full abstract»

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  • Transient Currents in Silicone Oils Subjected to Voltage Steps with Polarity Reversal

    Publication Year: 1985, Page(s):183 - 186
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB)

    We have studied the transient currents flowing in silicone oils subjected to voltage steps with polarity reversal. The experiments have been carried out, at room temperature, on two 50 cSt viscosity polydimethylsiloxane silicone oils (Rh¿¿ne-Poulenc 604 V 50 and Dow Corning 561) in parallelplate conductivity cells as a function of the applied electric field strength (0.4 ¿¿ E (kV cm-1) ¿¿ 10), of ... View full abstract»

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  • Electrical Conduction and EHE Motion of Dielectric Llquids in a Knife-Plane Electrode Assembly

    Publication Year: 1985, Page(s):187 - 198
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1789 KB)

    The stationary current-voltage characteristics in a knife-plane set-up generally exhibit three main regimes of electrical conduction, an ohmic regime, a quasi-ohmic one and one of rapid increase. The last regime corresponds to dominance of charge injection by the knife associated with a vigorous liquid motion which contributes to the passage of the current. The theoretical study of bulk conduction... View full abstract»

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  • Electro-Optic Charge Injection and Tramsport Measurements in Highly Purified Water and Water/Ethylene Glycol Mixtures

    Publication Year: 1985, Page(s):199 - 211
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8572 KB)

    Extensive Kerr electro-optic field mapping and voltage/ current measurements have been taken with highly purified water over the temperature range of T= 0 to 30°C using parallel plane electrodes with average field strengths up to 160 kV/cm. The Kerr constant of water B was measured to be B ¿, 3.4 to 3.6x1O-14 M/V2 for free-space light wavelength 590 nm and varies only slightly with temperature o... View full abstract»

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  • Issue Survey

    Publication Year: 1985, Page(s):212 - 320
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  • Ion Injection by Metallic Electrodes in Highly Polar Liquids of Controlled Conductivity

    Publication Year: 1985, Page(s):213 - 220
    Cited by:  Papers (7)
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    It is shown that conduction in high electric fields (100 < E < 500 kV/cm) in propylene carbonate (Er=69) between metallic electrodes is due to the production of negative ions near the cathode. Taking into account the electrohydrodynamic effects, it is found that the influence of the acting parameters (electrode gap, resistivity, nature of the electrodes, and temperature) is in agreement with a mod... View full abstract»

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  • Creation of Charge Carriers in Nonpolar Liquids

    Publication Year: 1985, Page(s):221 - 231
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1654 KB)

    We give a kinetic analysis of the mechanisms of charge carrier creation and of electrical conduction in liquids of low permittivity (er<5). Carriers are formed either in the bulk of the liquid or at the metal/liquid interface. We consider that creation of carriers in th6se liquids is a two-step process; the firs-t, ionic dipole-formation and the second, separation of these charges by the applied f... View full abstract»

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  • High-Field Conduction in Dielectric Liquids Revisited

    Publication Year: 1985, Page(s):233 - 238
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (820 KB)

    The various mechanisms proposed to explain the conductivity of organic dielectric liquids at high fields (50 to 2000 kV/cm) are considered and their range of validity assessed. Avalanche ionization and field-increased mobility are negligible, while Onsager enhanced dissociation of electrolytes can be very effective, but only in hydrocarbons. An ubiquitous phenomenon is oxidoreduction of neutrals f... View full abstract»

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  • Experimental Support for a Model of Positive Streamer Propagation in Liquid Insulation

    Publication Year: 1985, Page(s):239 - 246
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2166 KB)

    Results are presented of experiments to determine positive streamer velocities in aliphatic hydrocarbons. For the millimeter gaps employed it-is found that the streamer tip velocity goes through a minimum with growth across the gap. A simple model of streamer growth also predicts a velocity minimum. The position of the minimum is used to derive a tip charge value for the observed streamer. Effecti... View full abstract»

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  • Pre-Breakdown Current and Light Emission in Transformer Oil

    Publication Year: 1985, Page(s):247 - 255
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4930 KB)

    Prebreakdown current, photo current, and light emission are measured simultaneously in transformer oil under nonuniform fields. For a negative needle point, the light emission is divided into two patterns. They change from a bush-type to a tree-type as the applied voltage or the oil pressure increase. In the case of the tree-type, they are cau-sed by the streamer only at the initial stage. In the ... View full abstract»

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  • A Critical Region in Dielectric Liquids Under High Electric Stress

    Publication Year: 1985, Page(s):257 - 260
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    Using several specially designed discharge chambers embodying point-point, point-plane and point-sphere electrode systems, and filled with dielectric liquid, a zone of low luminescent intensity was detected between the electrode corona and the point in the liquid at which the discharge channel originated. This dark zone is evidently the location of the mechanisms which are the critical precursors ... 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