GAS CIRCUIT BREAKER WITH RESET OHMIC CONTACT, AND METHOD FOR RESETTING AND TRIPPING SAME

Title:

GAS CIRCUIT BREAKER WITH RESET OHMIC CONTACT, AND METHOD FOR RESETTING AND TRIPPING SAME

Document Type and Number:

WIPO Patent Application WO/2011/001624

Kind Code:

A1

Abstract:

Disclosed is a gas circuit breaker with a reset ohmic contact. The width of a contact section in said circuit breaker is reduced, decreasing the size of the case; also, said circuit breaker prevents abnormal vibrations and large shocks from occurring when the circuit breaker is reset or tripped, thereby increasing reliability. The circuit breaker is provided with: a first movable electrode (2) that has a first arc electrode (2a) and a concentric first main electrode (2b); a second movable electrode (3) that has a second arc electrode (3a) and a concentric second main electrode (3b); a reset resistor (12) that slidably supports an end of the second arc electrode (3a); and a reset ohmic contact (11) that has a fixed reset ohmic contact (11a), which is affixed around the second arc electrode (3a) to a conducting support member (8), and a movable reset ohmic contact (11b), which is supported by the second arc electrode (3a). When the circuit breaker is reset, the movable reset ohmic contact (11b) makes contact with the fixed reset ohmic contact (11a) after the two arc electrodes (2a, 3a) make contact, and when the circuit breaker trips, the reset ohmic contact (11) opens after the two arc electrodes (2a, 3a) open.

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Inventors:

OHDA YOSHIAKI
TAKAGI HIROKAZU

Application Number:

PCT/JP2010/004075

Publication Date:

January 06, 2011

Filing Date:

June 18, 2010

Export Citation:

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Assignee:

TOSHIBA KK (JP)
OHDA YOSHIAKI
TAKAGI HIROKAZU

International Classes:

H01H33/70; H01H3/42; H01H33/42; H01H33/915

Foreign References:

JP2004119310A	2004-04-15
JPH03101025A	1991-04-25
JPS6293824A	1987-04-30
JPH03274626A	1991-12-05
JPH11144576A	1999-05-28
JP2989653B2	1999-12-13
JPH02297826A	1990-12-10

Other References: