Remotely actuated switch and protection circuit

Details Remotely actuated switch and protection circuit Remotely actuated switch and protection circuit

H - Electricity

04

M

H04M 3/30 (2006.01) H02H 3/10 (2006.01) H02H 7/20 (2006.01) H04M 3/18 (2006.01) H02H 9/04 (2006.01)

Patent

CA 2139435

A switching arrangement that can be connected in a communications channel comprising a pair of lines, between sets of terminal equipment, which comprises: (i) a pair of series switching circuits (2), each of which can be series connected in one of the lines and will open when subjected to an overcurrent in its associated line; and/or (ii) one or more shunt switching circuits (4) connected between the lines, or between one or both the lines and earth, and will close when subjected to an overvoltage in its as- sociated line; wherein the or each switching circuit can be remotely actuated by means of a test signal sent along the channel.

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