Protection circuitry for cable transmission system

Details Protection circuitry for cable transmission system Protection circuitry for cable transmission system

H - Electricity

02

H

317/11

H02H 7/26 (2006.01)

Patent

CA 1079348

PROTECTION CIRCUITRY FOR CABLE TRANSMISSION SYSTEM Abstract of the Disclosure A protection circuit for a cable transmission system comprising a multipaired cable core surrounded by a conductive sheath wherein at least some of the cable pairs have one or more line powered repeater amplifiers connected in series therewith at discrete locations. Gas tubes connect each of the amplifiers input and output terminals to a common bus at each location. In addition a further gas tube having a breakdown voltage several times higher than the others at that location, is connected between the common bus and the conductive sheath, so as to provide controlled breakdown therebetween. - i -

301761

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