Operating instructions for Cable Detector, article 37270766
Page
16
of
34
5.1.2 Locating and tracking wires and sockets
Requirements:
The circuit must
not
be live.
The neutral and protective leads must be
connected and fully functional.
Connect the transmitter to the phase and
protective ground per Fig. 3-1-2.
5.1.3 Detecting cable breaks
Requirements:
The circuit must not be live.
All leads not needed must be connected to auxiliary
ground per Fig. 3-1-3.
Connect the transmitter with a line connection and
auxiliary ground per Fig. 3-1-3.
1.
The grounding connected to the transmitter can be an auxiliary ground, such as a grounded socket or
a properly grounded water pipe.
2.
During tracking, at the break location there will be an abrupt decline in the signal shown at the
receiver.
3.
Adjust the transmitter power to suit the different search radii.
4.
The position you are searching for can be detected precisely by putting the receiver in manual mode
and setting the right sensitivity.
1.
Make sure there is a complete ground connection.
2.
With single-pole display it is also possible to track lateral
circuit junctions.
3.
If the supply line getting signals from the transmitter is
directly parallel to other wires (e.g. cable slots of
channels) or if the wires cross, the signals will also be sent
to the other wires.
4.
During search and tracking the signal will be shown
stronger as the receiver gets closer to the tracked leads.
5.
Adjust the transmitter power to suit the different search
radii.
6.
The position you are searching for can be detected
precisely by putting the receiver in manual mode and
setting the right sensitivity.
1.
Make sure of complete grounding.
2.
The transition resistance of a line break must be higher than 100 kOhm.
3.
When finding breaks in multi-strand conductors, make sure that all the other wires in the shielded
cable or lead are properly grounded. This is necessary to avoid cross-coupling of the signals fed in
(through capacitive effect on the output connections). The tracking depth for shielded cables differs,
since the individual strands in the cable are twisted around each other.