How to Perform a Test
AVTMST16 Rev 1 May 2016
23
Step Description
3
Select
to start the fault location.
4
Adjust the surge voltage and select
to confirm the value (not required in automatic
mode).
5
Press the green illuminated “HV ON” button
.
6
Select
to charge the surge capacitor (only if
measurement start
option is set to
manual. See page 18).
Result:
The capacitor is charged up to the selected voltage.
7
Select
to discharge capacitor (only if
measurement start
option is set to
manual
(not
required in automatic mode).
See page 18.
Result:
A capacitor discharge (shot) is initiated.
If a voltage breakdown takes place, the red fault trace is shown in the display. The red
fault marker is automatically set to the position where both traces diverge from each other.
The fault is referenced to the 2 closest transformers, which identify the cable section
containing the fault.
NOTE: If no trigger is received and, thus, no fault trace is shown, you may
try to repeat the procedure with a higher surge voltage (if possible) by
selecting the
menu item.
8
If necessary, adjust the display settings, TDR settings and marker position through the
menu in order to uniquely identify the affected section.
See page 38).
Summary of Contents for SMART THUMP ST16
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