Open AccessPower loss phenomena in liquid dielectrics
Author(s) -
Willis Jackson
Publication year - 1933
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1933.0192
Subject(s) - dielectric , materials science , dielectric loss , liquid dielectric , voltage , composite material , electrical engineering , thermodynamics , analytical chemistry (journal) , chemistry , optoelectronics , physics , chromatography , engineering
While attention has been devoted to the behaviour of liquid dielectrics under constant applied voltage, the effect of prolonged steady voltage application on the power loss exhibited by such dielectrics in alternating electric fields does not appear to have been studied. The present paper describes an analysis of this effect in a series of dielectric loss measurements on samples of several liquid hydrocarbon derivatives—benzene, toluene, chlorbenzene and nitrobenzene—over the frequency range 2 × 105 to 2 × 106 cycles per second, before and after the application D. C. voltage. The scope of the measurements may be summarized under the following heads:— (1) Investigation of the variation of the dielectric loss, as shown in the equivalent series resistance of a test condenser containing the dielectric, with frequency at constant temperature. (2) Investigation of the variation of the loss resistance with temperature at constant frequency. (3) Investigation of the behaviour of the dielectric under steady potential and following prolonged steady voltage application.