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If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.

TOPIC: Fire resistance cables

Fire resistance cables 2 years 8 months ago #183

Can we make fire resistant cables (mica tape around conductor) for aluminum cables like (AL/MICA/XLPE/SWA/LSHF)?

M.Mansour
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Re: Fire resistance cables 2 years 8 months ago #184

Hello again,

Keeping in mind that the melting point of aluminum is 660C (1220F) and that the melting point of copper is 1084C (1983F), it depends on the specification you are trying to achieve.

Regards
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
519 641- 3212
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Re: Fire resistance cables 2 years 8 months ago #185

Thanks for your usual cooperation

But on the other hand, does mica tape make thermal isolation for conductor so temperature will not reach melting value? For example IEC 60331 for 750 C , in this case does conductor temperature also reach 750 C or not!

M. Mansour
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Re: Fire resistance cables 2 years 8 months ago #186

Mica insulation does not burn because it is a mineral. Its heat transfer characteristics may slow heat transfer down for a long enough period of time to pass some time defined test but it will not stop heat transfer from occurring.

You will have to perform some experiments to see if your design passes the required specification

Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
519 641- 3212
The administrator has disabled public write access.
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