Title :
Influence of relative humidity on surface charge decay on epoxy resin insulators
Author :
Lutz, B. ; Kindersberger, J.
Author_Institution :
Lehrstuhl fur Hochspannungs- und Anlagentechnik, Tech. Univ. Munchen, Munich, Germany
Abstract :
The influence of relative air humidity on the surface charge decay on epoxy resin insulators initially charged by DC corona and on their surface resistivity is investigated at room temperature. It has been observed, that surface resistivity of the epoxy resin insulators decreases significantly at higher relative humidity. Thus, at higher relative humidity surface charge decay is dominated by electric conduction along the insulator surface. This effect has been verified by both, measurement and simulation of the surface charge decay.
Keywords :
conducting polymers; electrical resistivity; humidity; insulating materials; surface charging; surface resistance; DC corona; electric conduction; epoxy resin insulators; relative air humidity; surface charge decay; surface resistivity; Charge measurement; Conductivity; Corona; Current measurement; Dielectrics and electrical insulation; Epoxy resins; Humidity; Metal-insulator structures; Surface charging; Temperature; solid insulator; surface charge decay; surface resistivity;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252237
