Heavy rail / Urban light rail

Fire behaviour of cables

Check the behaviour of electric cables under fire conditions and conduct type approval tests for the EC marking of cables.

Tests objectives

  • Assess the ability of cables not to propagate fire via 3 tests:
    – 1 kW flame propagation
    – Fire propagation on stranded wires
    – Fire propagation on ribbon cables
  • Evaluate heat generated by measurement of oxygen consumption coupled with measurements of fire propagation on ribbon cables
  • Characterize smoke toxicity and opacity from cables in the event of fire.

Tests facilities

  • 27 m3 test chamber
  • 1 kW flame
  • Testing booth
  • Test device for ribbon cables (with or without calorimeter hood)


ISO/IEC 17025 awarded by COFRAC

Testing norms

EN 61034 – Measurement of smoke density of cables burning under defined conditions

NF C32-070 – Classification tests on cables and conductors with respect to their fire behaviour

IEC 60 332 – Tests on electric and optical fibre cables under fire conditions – Procedure for 1 kW pre-mixed flame

EN 50266-2-4 et EN 50305 (§9.1) – Test for vertical flame spread of vertically-mounted bunched wires or cables

EN 50399 – Heat release and smoke production measurement on cables during flame spread test

EN 45545 – Railway applications – Fire protection on railway vehicles

Essais de comportement au feu de câbles
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