Title:
GAS-BLAST CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2004125612
Kind Code:
A
Abstract:
To grasp the usage condition of a gas-blast circuit breaker in a field for improving conveniences when a gas enterpriser uses gas by verifying the past turn-off contents without using any exclusive tools.
When a prescribed number of test signals C are transmitted to a microcomputer 7 from a test switch 4 using a reed switch within a specific amount of time, the past turn-off contents can be verified by a display, thus improving the conveniences when the gas enterpriser uses gas.
Inventors:
NAKAMURA HIROSUMI
KAMIYAMA KAZUNORI
KAMIYAMA KAZUNORI
Application Number:
JP2002290098A
Publication Date:
April 22, 2004
Filing Date:
October 02, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01F1/00; F23K5/00; G01F3/22; (IPC1-7): G01F1/00; F23K5/00; G01F3/22
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito
Tomoyasu Sakaguchi
Hiroki Naito