The Conductivity of Insulating Oils

Abstract

Synopsis.-The paper describes experiments on the charging momentary increase occurred a few seconds later. Evidence is given ,current and other associated phenomena in high grade transformer on the time of recovery of the initial condition. The existence of oil. The charging currents remaining after the elimination of the space charges in the charged oil is shown, and the time of formation initial transient were studied to within a few hundredths second of of these charges together with the resulting non-uniform distribution application of continuous voltage. Two samples of the same oil of voltage is measured. The importance of the charging current in -obtained at different times differed radically. In one case the its early stages is emphasized, since it is the initial conductivity which charging current fell off from the start, while in the other it remained determines the a-c. loss.constant for an appreciable time or even temporarily increased.In an appendix a theoretical discussion is given on the influence On reversal of polarity after a long charge the initial current with of the space charges. It is shown that at least qualitatively these both specimens was the same as before reversal, but with one a large account for the observed phenomena.

Non-equilibrium steady states of electrolyte interfaces

“…The dynamics of ions in external electric fields determines the properties of numerous important natural and technological processes such as the formation of a membrane potential in biological cells via ion channels [1][2][3][4][5][6][7], the charging and discharging of batteries by charge transfer reactions at electrodes [8,9], the motion of colloids exploiting electrokinetic effects of ionic solvent components [10][11][12] as well as the suppression of electric currents by insulation fluids in high electric fields [13][14][15][16].…”

Memory Effect Canceling and Novel Driving Scheme of Twisting‐ball Display via Space‐charge Polarization

“…In the previous research, we proposed a simple memory effect canceling method for the twisting‐ball display utilizing space‐charge polarization . Space‐charge polarization is a slow‐response polarization in dielectric materials and semiconductors caused by the migration of charge careers . Figure shows the principle of this method.…”

The resistivity of oil and oil-impregnated pressboard varies with temperature and electric field strength

“…Lengyel studied the conductivity of oilimpregnated paper used in capacitors and obtained some theoretical results [1]. Whitehead also studied the resistivity of the insulating oils, and how air and moisture influenced the oilimpregnated paper [2][3][4]. Herzfeld considered the influence of space charge and surface condition on the conductivity [5].…”