Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1979-09-04
1982-02-09
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 77, 200 62, H01H 3304
Patent
active
043151205
ABSTRACT:
A load disconnection switch incorporating a quench chamber is described which features a tube-like housing, a telescope-like arrangement of a quench tube and a switch rod guided for relative axial movement within the tube-like housing and releasably connected together by a coupling system the release of which is dependent on relative movement between the quench tube and the housing.
The coupling system comprises at least one blocking device which is displaceably arranged in a respective radial guide in the wall of the quench tube and which engages in a recess provided in the switch rod. A control wall restricts the radial movement of the blocking device until, after a specified degree of relative movement between the tube-like housing and the coupled arrangement of quench tube and switch rod the restraint provided by the control wall is lifted and the ensuing relative movement of the quench tube and switch rod results in the current carrying path through the switch rod being interrupted at a spark contact and the heat generated at the spark contact causes the omission of quench gas from an associated quench rod which promptly extinguishes the arc.
The spark contact is conveniently guided in an opening in the wall of the quench tube and a diametrically opposed pressure pad located at the other side of the switch rod ensures contact between the switch rod and the spark contact.
REFERENCES:
patent: 2272717 (1942-02-01), Ludwig et al.
patent: 2785254 (1957-03-01), Atkinson
patent: 2848575 (1958-08-01), Hahn, Jr.
patent: 2883493 (1959-04-01), Stoelting
patent: 3564174 (1971-02-01), Clarke
patent: 3876849 (1975-04-01), Jackson, Jr.
Concordia Sprecher Schaltgerate GmbH
Macon Robert S.
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