Copper design & immunisation

Unit-twin cable, enclosures, screening conductor, induced voltages, immunity testing.

• NR/PS/TEL/00015
  Unit Twin Copper Telecommunications Cable (formerly RT/E/PS/00015)

  Procurement spec for PE- and ZHLS-sheathed unit-twin copper telecoms cable

  35 clauses mapped

• NR/PS/TEL/30107
  Telecoms Lineside Copper Cable Enclosures

  Core requirements for non-climate-controlled, unpowered lineside copper enclosures

  26 clauses mapped

• NR/PS/TEL/31102
  Screening Conductor For The Immunisation Of Telecommunications Cables

  Product spec for the aluminium screening conductor used to immunise telecoms cables

  11 clauses mapped

• NR/GN/TEL/31106
  Overview Of Electromagnetic Coupling Between Traction Systems And Telecommunications Cables

  Overview of how traction current induces voltages on lineside telecoms cables

  47 clauses mapped

• NR/L2/TEL/30003
  Immunity Test Requirements For Lineside Communications Systems (Formerly NR/SP/TEL/30003)

  Why lineside copper-connected equipment is immunity tested — traction interference

  16 clauses mapped

• NR/L2/TEL/30070
  Maintenance of Telecommunications Copper Cables

  Maintenance requirements for copper cables, including noise-immunity tests in AC areas (appendices carry the detail)

• NR/L2/TEL/31114
  Product Specification for Telecoms Jumper Wire

  Product spec for the twisted-pair copper jumper wire used on NR telecoms frames: based on a BT spec, with tinned conductors and black banding on the insulation so compliant wire can be recognised. The colour code for which jumper to use is in NR/WI/TEL/00113 (formerly RT/E/WI/00113)

  5 clauses mapped

• NR/L2/TEL/31107
  Limits and Test Method of Induced Voltages on Telecommunications Cables due to Electrification Systems

  The induced-voltage limits (longitudinal VL and transverse VT) on copper telecoms cables in AC electrified areas, and the test process used to prove them before, during and after electrification changes

  34 clauses mapped

• NR/L2/TEL/30036
  Booster Transformers Outages: Managing the Consequences for Telecommunication Systems (formerly RT/E/S/30036)

  Actions during a booster transformer outage to protect staff from shock via telecoms cables