Some general remarks on the dielectric loss mechanisms in mineral oils

The mechanisms of conduction and dielectric loss pertaining to electrical insulating oils, are examined with specific reference to the conduction and dielectric loss processes involving ionic and macroscopic particle charge carriers. Specific examples are presented; one of the most serious types of...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2009-12, Vol.16 (6), p.1506-1510
Main Author: Bartnikas, R.
Format: Article
Language:English
Subjects:
Charge carriers
Conduction mechanism
Conductors
Copper
COPPER SULFIDE
Copper sulfides
CORROSION
corrosive sulfur
Dielectric liquids
Dielectric loss
Dielectric loss measurement
Dielectric losses
Dielectrics
Dielectrics and electrical insulation
ELECTRICAL CONDUCTIVITY
Electrical insulation
INSULATION (ELECTRICAL)
ion charge carriers
Mineral oils
Minerals
Oil insulation
OILS
particles
Petroleum
SULFIDES
Sulfur
Voltage
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Description
Summary:The mechanisms of conduction and dielectric loss pertaining to electrical insulating oils, are examined with specific reference to the conduction and dielectric loss processes involving ionic and macroscopic particle charge carriers. Specific examples are presented; one of the most serious types of conduction by particles is that due to semiconductive copper sulfide particles, which are formed in a reaction between copper conductors or copper particles and the corrosive sulfur components contained in the oils.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2009.5361568