Title:
DISPLAY DEVICE TO INDICATE FAULT OF ELECTRICAL INSTRUMENTS, ESPECIALLY OVERVOLTAGE BLOCKING DEVICE
Document Type and Number:
Japanese Patent JP3663250
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a display for an overvoltage blocking device which is able to be economically operated again after responding and has a simplified structure.
SOLUTION: An insulating material casing 6 is surrounded by a metal casing 4 of two components which holds a display element 16. A sensor and the insulating material casing 6 are components of a switching member 5. The both parts of the metal casing 4 are mutually shifted away so that the switching member makes the display element 16 visible by generating pressure gas when a fault current is generated and forms a conductive connection part which receives and releases the fault current.
More Like This:
Inventors:
WALTER SCHMID
Application Number:
JP3690496A
Publication Date:
June 22, 2005
Filing Date:
February 23, 1996
Export Citation:
Assignee:
AB Schweitz Akchen Gezel Shaft
International Classes:
H01H71/04; H01T1/12; H01T4/02; H01T4/08; (IPC1-7): H01T4/02; H01T1/12
Domestic Patent References:
| JP61198589A | ||||
| JP60069488U |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Toshiomi Yamazaki
Takuya Kuno
Previous Patent: NEUTRAL POINT GROUND REACTOR APPARATUS
Next Patent: METHOD FOR MEASURING LEAKAGE CURRENT OF CAPACITOR
Next Patent: METHOD FOR MEASURING LEAKAGE CURRENT OF CAPACITOR