Method for repetitive measurement of the electrostatic charging tendency of liquid dielectrics

Author

Palmer, J.A. ; Nelson, J.K.

Author_Institution

Dept. of Electr. Power Eng., Rensselaer Polytech. Inst., Troy, NY, USA

Volume

3

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

70

Lastpage

74

Abstract

The construction of an apparatus for the measurement of the electrostatic charging tendency (ECT) of a dielectric liquid is described. A sealed reciprocating piston arrangement permits a liquid to be repetitively passed through a charge separating element. The use of a gold element is shown to minimize the effects of moisture and control temporal effects. The system is evaluated by testing samples of transformer oil drawn from the field. In general, the new system ranks the oils in the same way as a conventional assessment against a paper filter, although anomalies have been found which are an impediment to adoption

Keywords

dielectric measurement; insulation testing; surface charging; transformer oil; Au; charge separating element; electrostatic charging tendency; liquid dielectrics; moisture effects; repetitive measurement; sealed reciprocating piston; temporal effects; testing; transformer oil; Dielectric liquids; Dielectric measurements; Electrical capacitance tomography; Electrostatic measurements; Gold; Lubricating oils; Moisture control; Oil insulation; Pistons; System testing;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.485516

Filename

485516