Preflix Fire Survival Cables

In various Indoor and outdoor structures where maintenance of power supply during a fire is required and places where smoke and acid gas progression could create a risk to personal or sensitive equipment in high-rise building, schools, hospitals, hotels, shopping centers, subway etc. Fire Survival Cables also known as Low-smoke Halogen-Free-LSHF are used. In today’s building and installations, Electrical cables and wires are a significant fire safety issue. If the shield or jacketing materials in cables catch fire, they can correspond to a major quality of fuel for fire, because of the absolute volume of cables in modern building (electrical, telephone, computer connections etc.)

WHY USE PreFlix CABLES AND WIRES

It eradicates the threat of forming caustic acids (such as hydrochloric acid) and minimizes corrosion damage to equipments close to the fire

Eradicates the threat of inhaling toxic gasses which inturn reduces the damage to our respiratory system.

Zero discharge of thick smoke that weakens visibility of the fire exit routes and obstructs rescue operations.

 

It takes higher time than traditional cables in case of a fire situation, which aids in the evacuation procedures.

 

The excellent noncombustible flame property puts a stop to the fire from dispersion through the place.

TESTING PROCEDURE FOR FIRE SURVIVAL CABLES:-

This test is intended to evaluate cables which are designed as fire survival cables to be used for fire alarm circuits, emergency lighting, and cables for other emergency services. The test establishes whether a cable can maintain electrical circuit integrity for a time up to 3 hours at temperatures ranging from 650 °C up to in excess of 950 °C. The energized cable (at the rated voltage) is mounted horizontally in a test chamber and is exposed to a gas flame from a ribbon type burner, adjusted to give the appropriate temperature. There are many variations of this test using different conditions and a cable is rated depending on how the cable performs in the various categories. These categories can be summarized as follows:
IEC 60331-21: Cables are subjected to fire at 750 °C for 90 minutes followed by a 15 min cooling period.
BS 6387 (Category A): Cables are subjected to fire at 650 °C for 180 minutes.
BS 6387 (Category B): Cables are subjected to fire at 750 °C for 180 minutes.
BS 6387 (Category C): Cables are subjected to fire at 950 °C for 180 minutes.
BS 6387 (Category S): Cables are subjected to fire at 950 °C for 20 minutes (short duration).
Performance of Cables in the Event of Fire Resistance to Fire with Water

BS 6387 (Category W): Cables are subjected to fire at 650 °C for 15 minutes, then at 650°C with water Spray for further 15 minutes.

IEC 60331-31: Cables are subjected to fire at 830 °C with mechanical shock for 120 minutes.
BS 6387 (Category X): Cables are subjected to fire at 650 °C with mechanical shock for 15 minutes.
BS 6387 (Category Y): Cables are subjected to fire at 750 °C with mechanical shock for 15 minutes.
BS 6387 (Category Z): Cables are subjected to fire at 950 °C with mechanical shock for 15 minutes.
The cable will possess the characteristics for providing circuit integrity so long as during the course of the test; the voltage is maintained i.e. no fuse fails or circuit-breaker is interrupted and a conductor does not rupture, i.e. the lamp is not extinguished.

GENERAL CONSTRUCTION

Solid / Stranded Copper conductor lapped with Glass Mica tape, insulated with XLPE to form a core. Cores are laid up together to form a power cable / control cable / Instrumentation cable with fire survival properties.

Conductor: Copper bare or tinned. Circular or sector shaped with Glass Mica tape.
Insulation : XLPE / LSZH
Inner sheath: FRLS
Amour: Wire or Strip
Outer Sheath : FRLS / LSZH

APPLICATION

  • To maintain circuit integrity during the Fire
  • Standard Specifications: IS / IEC / BS
  • Range Copper 15 SQMM to 400 SQMM
  • Special Characteristics: Withstand flame temperature of 750 degree centigrade up to 3 hours without electrical breakdown at rated voltage
  • Does not produce noxious smoke, propagate flame & fumes which hinder fire fighting and endanger life