Halogen Free LU Cable Trunking

By Chris Dodds on 28th November, 2013

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Fire Safe Cable Trunking - Zero Toxic or Corrosive Gas Emissions.

T&D support several LU London Underground contractors with fast deliveries of Panduit LSOH Halogen Free Open Slot Trunking for cable containment on the Tube - Panduit halogen free cable and wire trunking provides vital support to cable infrastructure as part of the ongoing Tube upgrade works.

What specification factors are important in a Halogen-free Wiring Duct ?

Specification factors in regard to fire safety with any non-metallic product can include flammability, flame spread, smoke toxicity and the optical density of smoke generated in the event of fire. For most applications the primary specification factor for a non-metallic product, with regard to safety, is its ability to sustain and spread fire, or its flammability. As a result, almost all non-metallic materials (halogenated or not) are tested to determine their flame rating. A typical test method is UL94, which provides a rating of the material at the product thickness. The classifications of this test range from V-0, V-1, V-2 to HB based on their performance characteristics12. Engineers selecting products for use in electrical machine controls often specify an acceptable rating for non-metallic components. Non-metallic products, including halogen-free wiring duct, that are V-0 rated are more optimal as they have the preferred rating under this test method.

The amount of toxicity and smoke generation can also be specification factors for a particular material or product. As previously mentioned these two factors are of greatest concern in environments where people will be within enclosed spaces where movement away from a fire source may be restricted. Examples of such environments are transportation applications such as in mass transit vehicles, in offshore oil and gas drilling rigs, and in shipbuilding. In addition to other factors, reducing the level of toxicity of any smoke generated during a fire in these environments is a key specification factor and safety requirement. With regard to fire safety, the term “halogen-free” refers only to the toxicity of the smoke generated during combustion of a material. By its nature a halogen-free product will not release significant levels of toxic or corrosive gases when it is ignited. A verified halogen-free wiring duct with UL94V-0 flame rating is more suitable in environments where fire safety and specifically very low smoke toxicity are required. Applications requiring a very low toxicity material may specify the product by the term “halogen-free” material, by test method such as IEC 60754-2, or by a material or product name.

T&D are Link-up Registered and Approved Vendors to Network Rail and TfL London Underground (LU).

Panduit LSF Halogen Free (Zero Halogen) Cable & Wiring Duct and Trunking

Category:  Rail

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