Electricity: conductors and insulators – Overhead – With messenger cable
Reexamination Certificate
2006-06-20
2006-06-20
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Overhead
With messenger cable
C174S13800J, C361S093100, C361S132000
Reexamination Certificate
active
07064267
ABSTRACT:
The present invention combines sensor portions22, 23of the device for measuring either current flowing through the line from the power inlet to the power outlet or voltage, or both, and bushings150, 160installed at either the power inlet or the power outlet, or both, so as to reduce the size of the gas insulating apparatus. Specifically, the above-mentioned sensor portions22, 23are installed in the space inside the porcelain tube15that constitutes the bushings150, 160.As this space, it is preferable to use the space on the outer-periphery side of the electric field relaxation member21provided inside the porcelain tube15.
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Endo Fumihiro
Kato Tatsuro
Kobayashi Kazuo
Saito Kazuhiro
Utsumi Tomoaki
Hitachi , Ltd.
Lee Jinhee
Reichard Dean A.
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