Low Smoke and Fume Cables (LSF)

PVC when burnt emits large quantities of dense black smoke and acid gas, and in addition to the debilitating effect of smoke and toxic fume inhalation, obscuration of fire safety exits delays or prevents escape. Improved PVC formulations producing less smoke and acid gas have been developed but still do not satisfy required emission levels. The demand therefore has been for materials to replace PVC which do not give off smoke and toxic fumes and do not contain halogens.

The low halogen content and low corrosivity of low smoke fume cables lies somewhere in between fire retardant cables and LSOH (zero halogen) cables. Low Halogen cable also contains halogen but the content is much less than PVC cables. LSF cable is designed to reduce the spread of fire, toxic gases and smoke during fire. The LSF cable is usually manufactured from flame retardant PVC blended with HCL additive and smoke absorbent. These materials help improve the fire performance of the LSF cables

 

Temperature Rating 70° C / 158° F

 
 
 
 

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