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08090418 - 01 VIFSU154 09/2010
DEVI Iceguard is a self-limiting cable, which
is mainly used for ice and snow melting on
roofs and in gutters and down pipes.
Self-limiting heating cables are designed with
a temperature dependant resistant element
between two parallel copper conductors.
When the conductors are connected to the
mains, a current goes through the tempera-
ture dependant resistant element which
will then heat. As the element is heated the
resistance value rises causing the current to
decline and heating is reduced. This explains
the self-limiting effect.
This limiting of the output takes independ-
ently place on the entire length of the cable
according to the actual ambient temperature.
If the ambient temperature rises the heating
effect of the cable is reduced. Due to this self-
limiting capability, overheating of the cable
can be avoided, also if two heating cables are
touching or crossing.
As self-limiting heating cables always give off
a small amount of effect, it is recommended
to connect the heating cable via a thermostat
to disconnect the mains when heating is not
required.
Devi Iceguard secures against ice formations
in roof gutters.
• No water damages on/in the house
• No falling icicles or icebound roof gutters
• No risks for pedestrians
• No repair costs after winter
For further information about application
of self-limiting heating cables or other DEVI
products, please see the DEVI heating cable
compendiums.
DEVI Iceguard self-limiting heating cable
Outer sheath
Screen
Insulation
Bonded jacket
Self-limiting heating element
Connecting conductor
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