Figure; Withstand Test Voltage Display Screen; Withstand Test Options Display Screen - Megger OTS 60AF Guia Del Usuario

Operation
Initial stand time is displayed. Repeated pressing of the left hand key changes ENABLED: to
YES or NO. To accept the displayed initial stand time, choose YES and press SELECT. To alter
the displayed initial stand time, press the centre arrows key. The display then moves to a sub
display to alter and set the initial stand time between 0 seconds and 99 minutes 55
seconds.Increment to the desired time using the left and centre keys, and press SELECT.
Note:- Repeated presses of a key changes the value in 5 second steps. Pressing and holding a key
changes the value in 5 second steps to the next minute value and thereafter in 1 minute steps.
3. The display now changes to show the Withstand voltage level and allow it to be altered as
required. The display appears similar to figure 16.
Use the left and centre keys to increase or decrease the withstand test voltage to the required
level.
Note:- Repeated individual presses of a key changes the value in 1 kV steps. Pressing and holding a
key changes the value in 1 kV steps to the next 5 kV value and thereafter in 5kV steps.
4. Press SELECT to move to the test option display as shown in the example of figure 17
5. The QUIT option moves back to the withstand test choice display.
6. Press and hold the STIR key to stir the oil sample if required.
7. Press the START key to begin a test. The test voltage will increase at 2 kV/s to the level set and
remain there for 1 minute (unless breakdown occurs first). The display shows the time for which
the voltage is applied.
8. The test voltage is automatically removed after 1 minute and the result of the test displayed.
Options are now displayed to PRINT the result or to perform a NEW test.
9. Press NEW to go back to the test option screen ready for a repeat test. From this option press
QUIT followed by MENU to return to the main menu.
22
30kV
WITHSTAND A
Figure 16. Withstand test voltage level display screen.
WITHSTAND
STIR
Figure 17. Withstand test option display screen.
SELECT
A
START
QUIT