DEVItector™ II V2User Guide
BC421332622232en-01010126 | ©Danfoss | FEC | 2022.07
Hard cases of tracing
a. In case of a disrupted conductor of airembedded
cabled under a wooden oor: Do only use the high
voltage pulse to generate an acoustic signal at the
fault, do not overlay the DC voltage as you may
very likely start a re underneath the wooden oor
covering.
In this way you will have to rely on acoustic
localization, that is your ears.
b. Twin cables / mats having a fault at or close to the
end terminal: The tracing signal will be live along
the entire cable length. You will have to rely on
acoustic localization.
c. Fault located underneath a permanent installation,
e.g. a room divider, a bath tub, etc. You will have to
rely on acoustic localization.
d. Unable to burn a carbon bridge; this may be
the case for a cable having silicone as primary
insulation. You will have to rely on acoustic
localization.
Correction of fault
WARNING
Hazardous voltage on terminals. Keep hands
away from terminals and connected cable.
Once the fault has been located you will have to
remove the oor covering to make the fault accessible.
Take care to minimize the damage to the oor
covering.
Remove the burnt section of the cable so only
undamaged cable remains. Find a proper length
of heating cable which is of similar type and linear
resistance [Ω/m] as the installed cable.
Splice the substitute cable to the installed cable
and seal with shrink tting tube on all conductors
including the screen and seal the entire assembly with
shrinktting tube.
Applicable repair kits саn be found in Product
Catalogue, Data Sheets, etc.
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