Cable failure detection system
US5077526A · kind A · utility
17Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1990 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Apr 23, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system is provided for monitoring a communications cable for moisture penetration. A line signal generator is connected to a metal armour layer of the cable to apply a line signal to the armour. Changes in the line signal current are monitored to detect the condition of the cable. Moisture penetration can be monitored throughout the length of the cable. The armour layer is maintained at a negative potential with respective ground. This provides an additional cathodic protection to the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.