Ethos 4700 - Locating of Short-Circuits in Conductors (Doubel-Pole Applicaion)

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3.10 Locating of short-circuits in conductors (double-pole application)
Note:
When locating of shrot-circuits in conductors,
any existing circuits within the cable must be
voltage-free; connect transmitter in accordance
with Figure 10; and carry out this example as
described in the application example.
Note that the tracing depth for sheathed cable
and conductors are different due to the fact
that the individual leads in the sheathed cable
are twisted around themselves. Usually,
short-circuits can only be correctly detected
when the short-circuit resistance is lower than
20 Ohm. The verification of the short-circuit
resistance can be carried out with any multimeter.
Should the short-circuit resistance amount to more than 20 Ohm, you can try
the experiment to detect the error location by means of the line interruption
mehtode. You can try with sufficient energy to determine the error location (low
ohmic connection) or to burn it in a way ensuring a line interruption.
The switching with button 4 from “LEVEL I” to “LEVEL III” the sensitvity of
Distance is increased up to a factor of 5.
Setup: manual mode, minimal sensitivity. Tracing depth max. 0,5 meters.
figure 10