Heating Cables
ELEKTRA
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
•
Feed the power supply conductor of the he-
ating 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 value with more than
-5%, +10%.
The heating cable insulation’s resistance,
as measured with an appliance of the rated
voltage 1000 V (megaohmmeter), should not
drop below 50 M
Ω
. Enter the results into the
Warranty Card.
After the surface has been completed, repeat
the measurements to check whether the
heating cable has not been damaged while
conducting works.
18
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