Title :
Estimation of vacuum condition in vacuum circuit breakers
Author :
Merck, W.F.H. ; Damstra, G.C. ; Gruntjes, R.J.B.
Author_Institution :
Eindhoven Univ. of Technol., Netherlands
Abstract :
In this paper a method is described for the estimation of the pressure inside vacuum circuit breakers which have been in operation for several years. The method is applicable for measurements in the field and uses only electrical measurement techniques. The vacuum circuit breakers switches off a 10 A DC current; arc voltage pulses are measured and represented in a histogram. The shape of the histogram is discriminative for pressures below or above 10-4 mbar
Keywords :
circuit-breaking arcs; switchgear testing; vacuum circuit breakers; voltage measurement; 10 A; arc voltage pulses measurement; current switching; electrical measurement techniques; pressure estimation; vacuum circuit breakers; vacuum condition estimation; Circuit breakers; Electric variables measurement; Histograms; Measurement techniques; Pulse circuits; Pulse measurements; Switches; Switching circuits; Vacuum arcs; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1998. Proceedings ISDEIV. XVIIIth International Symposium on
Conference_Location :
Eindhoven
Print_ISBN :
0-7803-3953-3
DOI :
10.1109/DEIV.1998.738702
