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Fire Survival / Fire Resistant Wires & Cables

Cables   /   General   /   Fire Survival Cables

Characteristics

Fire survival cables are designed for continuous operation under extreme heat of up to 750°C / 950°C for up to 3hrs during a fire.

Applications

  • Primarily used in circuits that are required to maintain their integrity during a fire.
  • Used in fire alarm systems, access control systems, emergency lighting circuits, water sprinklers, sound and PA systems, security systems, tunnel ventilation etc.
  • Areas of application include public address systems, emergency systems in metro rail, airports, power plants, high rise buildings, malls etc.

Cable Construction

Conductor : Electrolytic grade annealed bare or tin-plated copper; Solid / stranded / highly flexible copper wires

Insulation : PVC / HR-PVC / XLPE / LSZH / Silicon Rubber / EPR / Special Polyolefins

Screening (if required) : Individual and Overall Screen or Overall Screen with Aluminium-Mylar Tape

Inner Sheath (if armoured) : FRLS / LSZH / Special Polyolefins

Armour (if required) : Single layer of round galvanised steel wires or flat galvanised steel strips

Outer Sheath : FRLS / LSZH / Special Polyolefins

Characteristics

  • Withstands flame temperature of 750°C / 950°C for up to 3hrs without electrical breakdown at rated voltage
  • Low emission of smoke and toxic fumes to help people escape / firefighters save people
  • Does not propagate flame
  • Meets BS: 6387 Cat CWZ, BS: 7846 (950°C for 3hrs)

Reference Standards

  • IEC: 60331, BS: 7846, BS: 6387-CWZ, NFC32070, BS: 8434, BS: 7629

Circuit Integrity (Fire Resistance) Test

As per IEC 60331 / BS 6387 the test is carried out with the cable clamped above a burning fire of temperature 750°C / 950°C for 3 hrs with a connected power supply and load. The cable must continue to perform without breakdown and with continuous current flow for the whole 3 hrs under fire.