Method and apparatus for detecting abnormal conditions of circui

Details Method and apparatus for detecting abnormal conditions of circui Method and apparatus for detecting abnormal conditions of circui

1981-03-20

1984-02-21

Tokar, Michael J.

Electricity: measuring and testing

Electromechanical switching device

Circuit breaker

324420, 200148A, 200 815, G01R 3132

Patent

active

044332939

ABSTRACT:
Abnormal conditions of a tank type gas circuit breaker are detected by driving a movable contact with a drive force and at a speed respectively lower than normal drive force and speed. Measuring units are mounted on various portions of a casing of the circuit breaker without disassembling the same and measured data are displayed for comparison.

REFERENCES:
patent: 2660635 (1953-11-01), Wood
patent: 3311726 (1967-03-01), Fish
patent: 4159446 (1979-06-01), Darrel et al.

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