Vacuum circuit breaker with two switching tubes connected in ser

Details Vacuum circuit breaker with two switching tubes connected in ser Vacuum circuit breaker with two switching tubes connected in ser

1984-01-05

1985-10-29

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148D, 200148F, 200153G, 200153K, H01H 3366

Patent

active

045502340

ABSTRACT:
A vacuum circuit breaker (1) having two switching tubes (5) which are electrically connected in series and aligned coaxially. By means of an offset drive unit (toggle lever system 26) two motions that are contrary to one another are produced for the drive tappets (15) of the breaker tubes (5), from the common drive motion of a rod (11). The contact pressure springs (32) of the two switching tubes (5) are directly or indirectly connected to a common stationary support (35) which can be unfastened and moved to a new position. Simultaneous contacting or separation of the breaker elements of the two breaker tubes produced by the common drive is ensured by loosening the bearing block, after releasing the connection with the common drive mechanism, and fastening it again after the force differential has been automatically compensated for. The invention is suitable for vacuum circuit breakers in the medium-voltage range, such as those used to supply power to railroads.

REFERENCES:
patent: 2783338 (1957-02-01), Beatty
patent: 3482069 (1969-12-01), Badey et al.
patent: 3597556 (1971-08-01), Sharp
patent: 3728508 (1973-04-01), Netzel
patent: 3852548 (1974-12-01), Goodwin, Jr.
patent: 3922512 (1975-11-01), Benham
patent: 4323743 (1982-04-01), Peek
patent: 4423298 (1983-12-01), Tsukushi et al.
"Vacuum Circuit-Breakers for 25 kV Trackside Supply", Electrical Review, Apr. 1973 at pp. 531 to 533.
"The System of Electrical Power Supply for 25 kV A.C. Electrification on British Railways", by Howard (Elektrische Bahnen 78, 1980, vol. 8, at pp. 198 to 202.
Meidensha Electrical Mfg. Co., Ltd. Catalog No. GB64-1949.

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