Switching device, use thereof and a method for switching

Details Switching device, use thereof and a method for switching Switching device, use thereof and a method for switching

2011-07-12

2011-07-12

Wallis, Michael Rutland (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

Reexamination Certificate

active

07977824

ABSTRACT:
A device for switching in and out a load with respect to an alternating voltage feeder has two mechanical switches connected in series in a current path between the load and the feeder and each having a by-pass branch with at least one member with ability to block current therethrough in at least a blocking direction and conduct current therethrough in at least one direction. A unit is adapted to control a procedure of a switching out and switching in by synchronization with the current in the feeder and the voltage of the feeder, respectively.

REFERENCES:
patent: 3223888 (1965-12-01), Koppelmann
patent: 4209814 (1980-06-01), Garzon
patent: 6114778 (2000-09-01), Rostron et al.
patent: 0137299 (2001-05-01), None
patent: 0195354 (2001-12-01), None
patent: 0195356 (2001-12-01), None
patent: 0223207 (2002-03-01), None
European Search Report; EP 07 10 1620; Jun. 22, 2007; 3 pages.
International Search Report & Written Opinion of the International Searching Authority; PCT/EP2008/050921; Aug. 22, 2008; 3 pages.

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