Figure 7 Example Stirring Screen
The time remaining for stirring is shown alternately with the words ‘STIRRING’.
4. When stirring has finished the test set begins its oil sample intermediate standing period which lasts
for 30 s. Again the time remaining for standing is shown alternately with the words ‘STANDING’ and
the breakdown voltage is still retained on the display. The display screen appears as in figure 8.
Figure 8 Example Intermediate stand time screen
5. When step (4) is finished the test voltage then begins to rise again as in step (2) above, this time for
‘TEST 2’, and the cycle of events repeats.
6. Steps (3), (4) and (5) are repeated so that the test voltage is applied for a third time. After the test
voltage has been cut off on the third test, the display screen shows the average breakdown voltage
value from the three tests in the sequence. The display screen appears as in figure 9, or figure 10 if
the PASS/FAIL option has been enabled.
Figure 9 Example Average breakdown voltage screen
Figure 10 Example Pass screen
Operation
13
PASS
5 MINUTE TEST
VIEW QUIT
46 kV
TEST 1 STANDING
5 MINUTE TEST
STOP
45 kV
AVERAGE VOLTAGE
5 MINUTE TEST
VIEW QUIT
46 kV
TEST 1 STIRRING
5 MINUTE TEST
STOP
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