INTELLIGENT BRANDS // Cabling
At a glance…
‘IT WAS SUSPECTED
THAT REPEATED HEAT
CYCLES WOULD LEAD TO
ACCELERATED AGEING
OF THE COMPOUNDS
USED FOR THE
DIELECTRIC INSULATING
MATERIALS AROUND
THE CONDUCTORS…’
degradation at elevated temperature, the
thermal cycling was extended to about 120°C.
However, should the temperature extend
beyond this, the safety margin is not terribly
large, with only something like 30 degrees of
headroom. This, in itself should be sufficient
for most operations.
However, consider a bundle of cables remote
powering end equipment and passing through
a roof space in a non-air-conditioned building:
a bundle core temperature exceeding 100°C
may be a possibility.
So, what is the implication of this? It is typical
that new buildings will be modelled for airflow,
insulation and temperature (for the comfort
of those who use the building).
The conclusion from this paper is that the
simulation also needs to include data cable
pathway temperature simulation, which
includes potential self-heating effects and
those areas with greatest risk of excess
heating are monitored and the temperature
controlled with the same attention that
the equipment at either end of the cable is
thermally managed.
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46
INTELLIGENTCIO
Siemon launches category
6A F/UTP shielded
outside plant cable
Siemon, the network infrastructure provider, has
announced the expansion of its copper cable with the