British Cables Company (formerly BT Cables)
Network Rail Trackside Telecoms Duct HFFR 00015
Network Rail Telecommunications Cable
PACW/ solid polyethylene insulation/moisture barrier/HFFR sheath External Telephone Cable – suitable for tunnel and sub-surface applications (Complies with Specifications NR/PS/TEL/00015 and BR1916) Network Rail certificate of acceptance – PA05/06233
HFFR Trackside Telecom Cable Duct Grade (for Tunnels and Platforms)
Application
The cable is designed primarily for underground trackside railway installation. It is suitable for installation in ducts and on cable trays in tunnel wall. It is a twisted pair cable with fire barrier tapes and Moisture barrier bonded to a Thermoplastic HFFR Sheath. The cable is also available with protection against crushing and rodent attack by the inclusion of a corrugates steel tape armour bonded to the outer HFFR sheath. The product satisfies the requirements of Network Rail Specification NR/PS/TEL/00015 (formerly TR/E/PS/00015 & BR1916/BR1822).
Construction
Twisted pairs in 10 Pair Units. The pair range is 2 – 100.
Product Description
Plain annealed solid copper wire, solid polyethylene insulation, twisted pairs, fire barrier tapes, black HFFR thermoplastic sheath incorporating a longitudinally applied aluminium/polyethylene moisture barrier.
Insulation Resistance
Insulation resistance measurements shall be made with not less than 500 volts D.C. After steady electrification for one minute the insulation resistance measured between each conductor and the remaining conductors connected together shall be not less than 1500 megohms per 1000 metres at 20°C.
Capacitance Unbalance
Not more than 1% of the corrected capacitance unbalance measurements between adjacent pairs shall exceed the following values: Two-Pair (Quad) Cable 800pF. All other sizes 275pF.
Fire Test Performance
Smoke Emission Compliant with BS6853, Appendix B and IEC 61034.
Flammability
Sheath materials has Temperature Index ≥ 260°C (BS6853 Appendix A).
Low Smoke Sheath
≤ 0.05% Halogenated material.
