Caledonian Fire Resistant

CABLE CONSTRUCTION
Fireflex cables are constructed in the following typical design:
   1. Solid/stranded annealed copper conductor
   2. Glass mica tape/silicone rubber as flame barrier
   3. Xlpe/silicone rubber as insulation
   4. LSZh/flame retardant pvc as sheath
Fireflex cables are offered in either single core, multicore or multi-pair constructions.
The insulation material can be elastomeric(EPR, SR), thermosetting (XLPE, LSZH) or thermoplastic (EVA, PVC) to meet different stringent environment requirement. The cables may be armoured or braided, with or without metallic screen, depending on different applications. Caledonian can provide PE, PU, PVC, SHF1, SHF2 or LSZH materials as outer sheath for different applications.
INTERNATIONAL STANDARD
The fire resistant cables manufactured by caledonian comply with either one or combination of the following standards.

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FIRE RESISTANT CABLES

In all fire disasters, fire smoke, heat and toxic fumes are the main obstacles to safe evacuation of a
building or area. A major contribution towards overcoming these hazards is the use of fire resistant
and non-halogenated cables.

Caledonian fire resistant cables, branded under Fireflex, provide the following features:
      Fire resistance
      Long-term circuit integrity in a fire
      minimum smoke emission
      Flame retardance
      Reduced fire propagation
      Zero halogen
Fireflex cables are mainly used in the wiring of:
      Fire resistant safety circuits
      Public address and emergency voice communication systems in high-rise building
      Control and instrumentation services in industrial, commercial and residential complexes High-temperature installation conditions.

What is Fire Resistance
In a fire, the electrical systems must be able to keep functioning for a suitable length of time. This is particularly important for safety equipments used in emergency ventilation, emergency lighting, and alarm systems, together with the power supply to transport facilities and elevators.
Fire resistance means that the cable or the cable system where the cable is installed is capable to continue to operate even in case of fire for a specific period of time from 30 to 180 minutes.

Circuit integrity (Insulation integrity) refers to tests for the cables only. This is denoted by FE180 in some European countries such as Germany and Belgium. Functional integrity refers to tests on cables and systems (ladders, cable tray, clamps etc). It is denoted by E30, E60, E90 indicating the cable resistance for 30, 60 and 90 minutes according to a specific test and different installation systems.

The functional integrity and the circuit integrity are not related in any way as regards their content. The former is a system test and the circuit (insulation) integrity is an individual cable test. The integrated system test for functional integrity is regarded as a technical benchmark in the cable industry.