Locating Of Short-Circuits In Conductors - Amprobe AT-2032 Manual De Instrucciones

Locating of short-circuits in conductors

EXAMPLE 5 (dual-pole application)
NOTE:
By touching the contact electrode „7" the sensitivity range is increased to factor 1.5.
Tracing depth approx. 0 . . . 5 cm.
Requirements:
1) Any existing circuits within the cable must be voltage-free.
2) Connect transmitter in accordance with Figure 5.
3) Carry out this example as described in the application example.
Note that the tracing depth for sheathed cable and conductors are differnet 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 via sufficient
energy to met togehter the error location (low ohmic connection) or to burn it in a way
ensuing a line interruption. A line interruption should have a resistance of more than
100kOhm.
Systematically circle round the interruption by changing the sensitivity
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