Important Factors to Consider When Selecting Fire Rated Cable

A fire rated cable is one that can operate safely for an extended period of time under flame-burning conditions. High-rise structures, subways, underground retail malls, power plants, and large industrial and mining businesses all use fire-resistant cables for fire protection and fire rescue. Power supply and control cables for firefighting facilities, for example.



What Is Fire Rated Flexible Cable and How Does It Work?

There are two types of Fire Rated Cable : class A and class B. Class B cable can endure a flame temperature of 750°C to 800°C and a rated voltage of at least 90 minutes without breaking. It can be 950 °C 1 000 °C flame and rated voltage to withstand burning for at least 90 minutes and the cable is not perforated in the refractory layer to enhance the manufacturing process and expand the refractory layer and other ways based on Class A fire rated cable development.

The performance of fire rated cable in class A is superior to that of cable in class B. Mineral insulated cable, also known as MI (mineral insulated cables), has a greater performance than fire-resistant cables constructed of copper core, copper sheath, and magnesium oxide insulation material processing. MI cable not only has good fire resistance properties and can work for a long time at a high temperature of 250 °C, but it is also explosion-proof, corrosion-resistant, has a high flow rate, and is radiation resistant. Explosion-proof, high corrosion resistance, high current carrying capacity, radiation resistance, high mechanical strength, small size, lightweight, long life, and smokeless are all features of MI cable. However, the cost is prohibitively high. In the oil irrigation area, major timber public buildings, high-temperature sites, and other fire-resistant needs, the procedure is complicated, and construction is difficult, but the economy can accept the occasion and utilise Fire Rated Flexible Cable.


​Fire Rated Cable Specification:

The maximum long-term working temperature of the cable

  1. Resistant vinyl polyfluoroethylene insulation and sheath: 70℃ and 105℃ both kinds; Cross-linked polyethene insulation: 90℃.
  2. Fluoroplastic insulation and sheathing: 220℃ and 260℃ two kinds; Fluoroplastic insulation and 105℃ flame retardant polyvinyl fluoride sheathing: 90℃ and 125℃ two kinds.
  3. Low-halogen, low-smoke flame-retardant PVC insulation, and sheathing: 70℃; Halogen-free, low-smoke flame-retardant polyolefin insulation and sheathing: 90℃ and 125℃ both.

Minimum ambient temperature.

  1. Flame retardant PVC insulation and sheathing: fixed laying -40℃; non-fixed laying -15℃.
  2. Fluorine plastic insulation and sheathing: fixed laying -60℃; non-fixed laying -20℃.
  3. The safe laying temperature of the cable should not be lower than 0℃.

Fire Resistance Characteristics : 

Flame temperature 950℃-1000℃ Flame temperature 750℃-800℃
Burning time 90min (recommended) Burning time 90min (recommended)
Additional voltage Rated voltage (min. 100V) Rated voltage (min. 100V)
Fire resistance class A (Class IA~Class IVA) Class I~IV

Critical electrical circuits, such as safety circuits and life support circuits, require fire resistant wires to work in the event of an emergency.

Features:

  • Fire Resistance

  • Long term circuit integrity in fire

  • low smoke and toxic gas emissions

  • flame retardant properties

  • zero halogen gases

  • ease and low cost of installation

The Making Of Fire Rated Flexible Cable

Znergy’s Fire Rated cable was developed to retain circuit integrity in the event of a fire and to ensure the safest possible evacuation of employees without the use of hazardous gases or smoke.

The Fire Rated Cable is typically built in the following format:

  • Stranded / Flexible Annealed Copper Conductor

  • Mica Tape Fire Resisting Barrier

  • XLPE/EPR/EVA as Primary Insulation Material

  • Flame Retardant LSZH, PVC as Bedding or Sheathing Material.

Single-core or multi-core architectures are available for fire resistant cable. Depending on our customer's unique application, the cable may be unarmored, armoured, braided, with or without metallic screening.

Znergy Cables finest performing cables under fire situations are fire resistant cables, such as those found in our Australian Cable ideas. These cables are suitable for use in safety-critical systems because they can not only withstand ignition and avoid flame spread, but they can also continue to work regularly for several hours while the fire rages around them.

Fire-resistant cables were created with the goal of improving safety and reducing the risk of fire in factories and other structures. This guide will teach you all you need to know about fireproof cables.

Location: Australia

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