NDLI: Influence of glow discharge pre-treatment on dielectric parameters in vacuum gaps

Content Provider	IEEE Xplore Digital Library
Author	Budde, M. Kurrat, M.
Copyright Year	2008
Description	Author affiliation: Inst. for High-Voltage Technol. & Electr. Power Syst., Tech. Univ. Braunschweig, Braunschweig (Budde, M.; Kurrat, M.)
Abstract	The dielectric properties of vacuum circuit breakers gain in importance, because the dielectric "management" in vacuum circuit breakers influences more and more design, development, production strategies and costs. Especially the economics of such solutions decide the application of vacuum circuit breaker technology in the high-voltage field. Against this background special attention is also paid to the conditioning process to finish the surface of the contacts and shields. After this, the final dielectric strength performance of vacuum interrupters can be evaluated using withstand voltage and additional micro discharge current measurements. The investigations of model assemblies require a special pre-treatment to achieve comparable results. The most important point here is a conditioning routine with glow discharges in the vacuum test vessel to eliminate adsorbed gas layers. Its influence on withstand voltage and further conditioning behaviour of the test assemblies is shown. The data, however, depend on many factors, such as material composition, surface structure, cleaning procedures, adsorbed gas layers or particles on the upper surface. The dependence of the roughness of the surface is much more pronounced than that of the size of the surface area. The technically interesting area is changing the reduction factor only slightly. However, the reduction factor for the surface roughness is the crucial parameter.
Starting Page	91
Ending Page	94
File Size	467635
Page Count	4
File Format	PDF
ISBN	9789737553829
ISSN	10932941
DOI	10.1109/DEIV.2008.4676727
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-15
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Glow discharges Dielectrics Rough surfaces Surface roughness Circuit breakers Surface discharges Voltage Assembly Testing Production
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software

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