Locating of line interruptions (one-pole application)
Requirements:
• The circuit must be dead.
• All lines which are not required must be connected to the auxiliary ground in accordance with figure 8.
• Connect transmitter to one lead and to an neutral according to figure 8.
• Carry out this example as described in the application example.
Line interruption in the plastic-sheathed cable.
The ground connected to the transmitter should be
earth from an earthed socket or a water pipe which is
properly earthed.
When tracing line interruptions in multicore cables,
not that all remaining leads in plastic-sheathed cable
or conductor must be grounded in accordance with
the regulations.
This is required to avoid crosscoupling of the fed sig-
nal (by a capacitive effect to the source terminals).
The tracing depth for sheathed cable and conductors
are different, as the individual leads in the sheathed
cable are twisted around themselves.
The transition resistance of a line interruption must
be higher than 100 kOHM. The verification of resis-
tance can be carried out by any multimeter.
Systematically circle around the interruption the changing the sensitivity.
The switching with button 4 from »LEVEL I« to »LEVEL III« the sensitvity of Distance is increa-
sed up to factor 5.
Tracing depth max. 2 meters.
Setup: manual mode, minimal sensitivity
Precise locating of line interruptions using two transmitters
(one-pole application)
When locating a line interruption using one transmitter to feed from one conductor end, the location
of interruptions may not be precisely located in case of bad conditions due to a field disturbance.
The drawbacks described above can easily be avoided when using two transmitters (one from each
end) for line interruption detection. In this instance, each of the transmitters are set to a different line
code (e.g. transmitter one to code "F, the other transmitter to code "C"). A second transmitter with a
different line code is not included within the scope of supply and, therefore, has to be ordered sepa-
rately. (Order number 2041 D with line code "C").
16
Fluke 2042
Users manual
6
