Cable gas feed monitoring system

Abstract

A cable gas feed monitoring system is described, which performs early-stage detection of damage generated in the cable and inspects the damaged part of the cable so that maintenance can be performed. The system includes a cable 1 that includes cable band units and a plurality of first cable band units 14a. Each cable band unit has a gas feed unit 4 that supplies a dry gas to an inside of the cable 1. A second cable band unit 14b is also provided and has a gas discharge unit 5. The gas discharge unit discharges the dry gas which is supplied to the inside of the cable 1 form the cable. A first sensor unit 4, is specified and is arranged in the vicinity of the second cable band unit 14b. This sensor unit measures a relative humidity of the dry gas flowing in the inside of the cable. A control unit is further provided that generates an alarm signal in a case where the relative humidity does not meet a standard set by a predetermined monitoring reference of relative humidity. A second sensor unit may also be used

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