Broadband PLC low temperature limit

Why is the lower temperature operating limit on broadband PLC set at 0C ?
If you want to use it in an open garage that could present a problem.
I am contemplating use of BPLC in machine-to-machine networks and this limit
is frustrating. I have tested units rated to 0C down to -10C, but I'm not sure whether
the fact they kept working is just a fluke.
Maxmike

I think you're asking about programmable logic controllers. Unfortunately this site is about high-speed internet.

I should have said broadband power line communications. Sorry for lazy typing.

At a guess, you're using consumer (commercial) specification kit, this is intended to be used in environments where you'd also be comfortable.

If you want a wider range of operating temperature you'll need to find industrial (or even military) spec devices.

Operating temperature ranges

In reply to a post by Anonymous:

I should have said broadband power line communications. Sorry for lazy typing.

Oh, you mean BPL? I think you really mean Homeplugs?

In reply to a post by BatBoy:

In reply to a post by Anonymous:

I should have said broadband power line communications. Sorry for lazy typing.

Oh, you mean BPL? I think you really mean Homeplugs?

No, he means PlC, in the Amateur Radio world, we know it as interference, as few units come anywhere near complying with EMC requirements. SHOULD BE BANNED!
Not just homeplugs - PLT coming to a street near you. http://www.emcuk.co.uk/awareness/Pages/InterferenceE...
https://en.wikipedia.org/wiki/Power_line_communication
http://www.rsgb.org/emc/docs/pdf/archive/emcplc.pdf
http://ebookbrowse.com/rsgb-and-plt-interference-upd...

Edited by professor973 (Wed 22-Aug-12 22:44:52)

Actually, there is NO ham interference - they would be used in electrical lines that are inside metal conduits.

In reply to a post by Anonymous:

Actually, there is NO ham interference - they would be used in electrical lines that are inside metal conduits.

Actually, I have not seen any household wiring within metal conduits, or street three phase cables. Look around and check out the tests.
I don't know how you can train RF to travel along a unshielded cable without radiating as an antenna. If you crack that one let me know.
I actually said hams consider it interference. Despite homeplugs being notched at amateur frequencies, emissions are still above EEC EMC specs. More importantly, there are many other users of the spectrum that don't have the benefit of notch filtering.

Can you just put them in an insulated box?

We are deviating from my question, but in North America shielded (and grounded) conduit, particularly in large buildings is quite common. Even in houses we use BX cable which does the same.