Method and an apparatus for controlling an electric...

Details Method and an apparatus for controlling an electric... Method and an apparatus for controlling an electric...

2007-01-23

2007-01-23

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Switch actuation

Reexamination Certificate

active

10297403

ABSTRACT:
An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.

REFERENCES:
patent: 5793594 (1998-08-01), Niemira et al.
patent: 6426634 (2002-07-01), Clunn et al.

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