Shielded conductor cable system

Details Shielded conductor cable system Shielded conductor cable system

1976-11-30

1981-04-28

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

179 78A, 333 12, 361 56, H02H 904

Patent

active

042649404

ABSTRACT:
The cable system carries one or more insulated conductors completely enclosed within a shield having one end connected to ground. A lightning-protector network connects the other end of the shield to ground. The protector network is normally open circuited and becomes only short circuited in response to a momentary abnormal surge voltage induced in the shield. The protector network's open-to-short impedance change completes a conductive circuit path between the shield and the two grounded ends for conducting a shield current which has the desired effect of protecting the signal-carrying conductors in the cable from the large-surge voltage.

REFERENCES:
patent: 2243851 (1941-06-01), Booth et al.
patent: 3308309 (1967-03-01), Wichmann
patent: 3719904 (1973-03-01), Bragg
patent: 3760298 (1973-09-01), Pell
patent: 3771022 (1973-11-01), Isokawa

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