Title:
【考案の名称】真空回路遮断器
Document Type and Number:
Japanese Patent JPH04102531
Kind Code:
U
Abstract:
A vacuum circuit interrupter has vapor deposition shields which is controlled by the circuit interrupter to produce a cold cathode ion detector for determining the quality or amount of vacuum within the vacuum circuit interrupter. The central shield support ring protrudes through an insulating casing to supply ion current to a current detecting bridge through a clrcumferentially insulated surge resistor and from there to the common terminal.
Inventors:
William Jei Ranjiu
Robert Benton Gotzer
Jiyoung Frank Perkins
Norman Davies
Robert Benton Gotzer
Jiyoung Frank Perkins
Norman Davies
Application Number:
JP5356591U
Publication Date:
September 03, 1992
Filing Date:
June 17, 1991
Export Citation:
International Classes:
H01H33/668; H01H33/66; (IPC1-7): H01H33/66
Domestic Patent References:
| JPS48104077A | 1973-12-26 | |||
| JPS4933168A | 1974-03-27 | |||
| JP47090294A |