DocumentCode
1177974
Title
Development of Advanced Built-In Surge Arresters for Distribution Systems with New Zinc-Oxide Elements
Author
Hama, M. ; Ishizaka, H. ; Shimizu, J. ; Nishiki, S. ; Kaku, I.
Author_Institution
Mitsubishi Electric Corp., Amagasaki, Japan
Volume
21
Issue
8
fYear
2001
Firstpage
61
Lastpage
62
Abstract
New zinc-oxide elements with a varistor voltage about twice that of conventional ones have been developed by reducing the ZnO grain size with a new additive, which enables to halve the series number of elements in metal oxide surge arresters. Using these elements, we have developed advanced built-in surge arresters enclosed in 6.6 kV pole transformers and switchgear. The advanced arresters have been reduced in volume by 25% compared with conventional ones. This paper describes the specification and construction of the advanced arresters and the results of various evaluation tests.
Keywords
Arresters; Circuit breakers; Equations; HVDC transmission; Sociotechnical systems; Sulfur hexafluoride; Surges; Switches; Switchgear; Voltage; Zinc-oxide elements; metal oxide surge arrester; pole switchgear; pole transformer;
fLanguage
English
Journal_Title
Power Engineering Review, IEEE
Publisher
ieee
ISSN
0272-1724
Type
jour
DOI
10.1109/MPER.2001.4311568
Filename
4311568
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