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Cable Sheathing Material "LSZH"

Dutch of the Elm
Hi,


I hope someone can assist. 


I am interested in studying the materials used to sheath "LSZH" / "LSF" cables, particularly ones such as twin and earth.  Can anyone confirm what kinds of compounds are typically used to sheath these cables?  Specifically LSF/LSZH ones, so not PVC.  I had assumed XLPE but a number of manufacturers seem to state "LSZH" sheath etc alongside XLPE insulation, so I am lead to understand the sheath is not XLPE... or am I overthinking it?  I have tried to asking a manufacturer but I have not had a clear answer.  


Looking forward to some answers.


Thanks,

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  • Former Community Member
    0 Former Community Member
    Just be a bit wary about "LSF" - claims of low smoke and fume aren't quantifiable


    LS0H cabling will have limits on the specific gas production and the amount of obscuration created by the test samples.


    Be wary of polyethylene - it may be zero halogen, but will produce a lot of obscuring smoke when involved in a fire - ditto for some fillers - certain types of below ground comms cabling is filled with basically petroleum jelly wrapped up in medium density polyethylene - donot need to run it far inside a facility before it's a real problem


    Regards


    OMS
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  • Former Community Member
    0 Former Community Member
    Just be a bit wary about "LSF" - claims of low smoke and fume aren't quantifiable


    LS0H cabling will have limits on the specific gas production and the amount of obscuration created by the test samples.


    Be wary of polyethylene - it may be zero halogen, but will produce a lot of obscuring smoke when involved in a fire - ditto for some fillers - certain types of below ground comms cabling is filled with basically petroleum jelly wrapped up in medium density polyethylene - donot need to run it far inside a facility before it's a real problem


    Regards


    OMS
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