Performance of polymeric insulating materials in salt-fog
The paper presents the results of a study conducted on polymeric insulating materials in a salt-fog chamber. The materials examined include high temperature vulcanized (HTV) silicone rubber, ethylene propylene rubber (EPR) and cycloaliphatic epoxy. The influence of inorganic filler, type, concentration and dispersion and the magnitude of the electric stress on the tracking and erosion properties of the materials are reported under high salinity conditions. The presence of filler in EPR material is shown to enhance leakage current. Studies of filler dispersion by an energy dispersive X-ray analysis (EDAX) show non-uniformity in filler concentration where erosion or tracking is initiated. The mechanisms by which the filler operated to impart improved resistance to tracking or erosion is discussed through measurements of surface temperature, released gases, weight loss and leakage current.
- Research Organization:
- Dept. of Electrical Engineering, Univ. of Windsor, Windsor, Ontario N9B 3P4
- OSTI ID:
- 6627756
- Journal Information:
- IEEE Trans. Power Del.; (United States), Vol. PWRD-2:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRICAL INSULATION
CHEMICAL COMPOSITION
CORROSION RESISTANCE
FOG
CORROSIVE EFFECTS
POWER TRANSMISSION LINES
SALTS
DEGASSING
EPOXIDES
EROSION
ETHYLENE PROPYLENE DIENE POLYMERS
FILTERS
LEAKAGE CURRENT
MEASURING METHODS
PERFORMANCE
POLYMERS
RUBBERS
SILICONES
SURFACE PROPERTIES
TEMPERATURE MEASUREMENT
X-RAY EMISSION ANALYSIS
CHEMICAL ANALYSIS
CURRENTS
ELASTOMERS
ELECTRIC CURRENTS
NONDESTRUCTIVE ANALYSIS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
SILOXANES
200300* - Electric Power Engineering- Power Transmission & Distribution- (-1989)