Voltage recovery characteristics of small air gaps

Author

Tsuruta, K. ; Takahashi, I. ; Kanzaki, U. ; Ojima, T. ; Komuro, T.

Author_Institution

Dept. of Electr. Eng., Ibaraki Univ., Hitachi, Japan

fYear

1988

fDate

5-8 June 1988

Firstpage

77

Lastpage

80

Abstract

Electrical recovery characteristics of air gaps less than 3 mm are determined using a two-pulse method. The first pulse is used to feed an overvoltage value to the gap and initiate the arc current. The second pulse is used to determine the recovery voltage of the gap. A plot of the recovery voltage with time is obtained by varying the time delay of the second pulse relative to the arc extinction time, in the time range from 50 mu s to 100 ms. It is found that the recovery characteristics are independent of the electrode material (Cu, Al, or stainless steel) and the arc current in the range of 40 A to 200 A, but depend on the gap length and the electrode geometry.<>

Keywords

spark gaps; 0 to 3 mm; 40 to 200 A; 50 mus to 100 ms; Al; Cu; FeCrC; arc current; electrode geometry; electrode material; gap length; recovery characteristics; recovery voltage with time; small air gaps; stainless steel; time delay; time range; two-pulse method; voltage recovery characteristics; Air gaps; Capacitors; Delay effects; Electrodes; Geometry; Plasma temperature; Pulse measurements; Pulse transformers; Resistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on

Conference_Location

Cambridge, MA, USA

ISSN

1089-084X

Type

conf

DOI

10.1109/ELINSL.1988.13871

Filename

13871