ELEKTRA
Heating Cables
Stage 2: After the heating
cable has been laid
At this stage, it is necessary to undertake the
following steps:
• stick into the Warranty Card the self-adhesive
label, positioned on the power supply con-
ductor of the heating cable,
• in the Warranty Card, prepare a sketch of the
heating cable’s layout positioning,
• fed the power supply conductor of the heat-
ing cable into the switchboard,
• perform the measurements of:
- heating wire resistance,
- insulation resistance.
The measurement results of the heating
core’s resistance should not vary from the
one given on the label with more than -5%
and +10%.
The insulation’s resistance for the heating
cable, as measured with a tool of the rated
voltage 1000 V (e.g. megaohmmeter), should
not be below 50 M
Ω
. Enter the results into
the Warranty Card.
When the surface has been finished, repeat
the measurements and compare the results
to ensure that the heating cable has not been
damaged while surface installation works.
Note:
In case of planned delay in connection of the
heating cable to the electrical installation, seal the
power supply cable of the heating cable against
the possibility of internal moisture penetration
using a protective cap placed on the conduit or
a heat shrinkable end cap.
!
16
