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Operating Principle
5.4 Locating and tracing of cables, circuit branches, sockets, switches and junctions in
house installations circuits (single-pole method)
When tracing cables or locating switches, sockets, junction boxes etc. the circuit must be isolated (dead). The
circuit must be wired correctly and operational before isolation. Connect the transmitter “red” terminal to
the line and neutral conductor simultaneously and the “black” terminal to earth (Figure 4). Route tracing and
accessory location is now possible.
Figure 4:
NOTE : If the supply cable fed with the signal via the transmitter is running in parallel to other
conductors (e.g. a cable duct), or if any conductors are crossed, the signal may be induced into
these conductors. If this occurs, the fuse for any supplementary conducts should be removed to
avoid mis-identification.
NOTE : Switching sensitivity between Level 1 and Level 3 increases the sensitivity by a factor of 5.
Setup: manual mode, minimal sensitivity. Maximum tracing depth 2.0 m
5.5 Locating of cable interruptions in the plastic-sheathed cable (single-pole method)
When locating of line interruptions, the circuit must be dead; All lines which are not required must be
connected to the auxiliary ground as shown in figure 8. When pin-pointing cable interruptions, the circuit
must be isolated (dead). All cables that are not required should be connected to earth, as shown in Figure 5.
Connect the “red” transmitter to the cable to be traced and the “black” lead to one of the cables connected
to ground. Route and accessory tracing using the receiver is now possible.
NOTE : All remaining conductors in a plastic sheathed cable must be earthed. This is to avoid
inducing the signal into the surrounding conductors.
The tracing depth of sheathed cables and conductors is different due to the individual cores being twisted
around each other. To pin-point an interruption, a resistance greater that 100 KΩ must be present.
Verification of the resistance can be made using a simple multimeter.
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General