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NR/GN/SIG/19012

SIGTAN 012 Cables & Wiring Used for Signalling Systems

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Organization: NR
Publication Date: 26 August 2008
Status: active
Page Count: 29
scope:

This Guidance Note mainly covers railway signalling wires and cables with copper conductors. The conductors in wires and cables with natural rubber insulation are tinned and surrounded by an external layer of polychloroprene. The colours mentioned are those most commonly found, but some types are available in other colours. Known problems with cables of other types are mentioned. Except where specially mentioned, references to cables may be taken as also applying to wires (i.e. single insulated conductors without an overall sheath). Testing methods are also included. The requirement to test insulation applies to cables, wires and circuit components carrying signalling circuits. This includes cables, interlockings, apparatus cases and lineside signalling equipment.

PURPOSE

This Guidance Note provides information relating to cables and wiring insulation, both degradation that has been encountered on Network Rail Signalling Infrastructure and testing methods. It also contains relevant technical information and the historical background. Some notes on inspection techniques, alterations to affected wiring and some miscellaneous cable problems are included in the appendices. The purpose of insulation testing is to detect the deterioration or failure of the insulation of wires, cables and other circuit components. Testing may be by continuous monitoring or by regular testing depending on the required level of integrity.

Document History

NR/GN/SIG/19012
August 26, 2008
SIGTAN 012 Cables & Wiring Used for Signalling Systems
This Guidance Note mainly covers railway signalling wires and cables with copper conductors. The conductors in wires and cables with natural rubber insulation are tinned and surrounded by an external...
February 1, 2001
Signalling Equipment Technical Advice Notice (SIGTAN012) Cables & Wires Used for Signalling Systems
This document mainly covers railway signalling wires and cables with copper conductors. The conductors in wires and cables with natural rubber insulation are tinned and surrounded by an external...
April 1, 2000
SIGNALLING EQUIPMENT TECHNICAL ADVICE NOTICE (SIGTANO 12) PROBLEMS WITH CABLES AND WIRING USED FOR SIGNALLING SYSTEMS
This document mainly covers railway signalling wires and cables with copper conductors. The conductors in wires and cables with natural rubber insulation are tinned and surrounded by an external...
March 1, 1997
SIGNALLING EQUIPMENT TECHNICAL ADVICE NOTICE (SIGTAN012) PROBLEMS WITH CABLES AND WIRING USED FOR SIGNALLING SYSTEMS
This document provides an understanding of cable problems on Railtrack Signalling Infrastructure, together with relevant technical information and, where necessary, provides a history of the problem....
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