technoac AP-019.1, Руководство по эксплуатации

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DEVELOPMENT, MANUFACTURING AND SUPPLY OF INSTRUMENTATION
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2. Method MIN when searching the place of damage location using sensors DKI-117
or DODK-117
When searching for insulation damages by « MIN» method, the contact pins of DKI-117 or
DODK-117 electrodes should be placed over the route, along the axis of the route. When you
use the MIN method, the signal increases smoothly at first, then rapidly decreases to a certain
minimum value, then as the distance from the damage place increases, it rises sharply again and
then gradually decreases.
The place of damage will be located midway between the electrodes, at a time when the signal
reaches the minimum value (fig. А.2).
The sensor DODK-117 provides a «fast» method of damage location, which is especially
important for the extensive communications, and the sensor DKI-117 provides a higher sensitivity
and accuracy of damage location and needs only one operator for work with it.
Fig. A.2