c. Use the
Increase Current Display Scale
(I+) or Decrease
Current
Display Scale
(I-) icons as needed to adjust the current’s scale.
d. After setting the target voltage, touch the
MOhm/PI
icon to start
the megohm insulation resistance (IR), dielectric analysis (DA), and
polarization index (PI) tests.
Preparing For Testing
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15
Never leave the unit unattended when using the Lock PTT feature. High voltage may be
present, which could result in injury or death from severe electrical shock.
WARNING
b. Rotate the
Voltage Output Control
knob on the front panel to raise the
target voltage level (for example, 500 volts for a 480- volt motor). Use
the
Fast
or
Slow Ramp Rate
controls as needed to fine tune the level.
Figure 19. Ramp Rate controls.
8. The
Status Bar
displays a countdown timer for each of the megohm, step voltage, and DC
HiPot tests as shown in the following example.
Figure 20. Status Bar with Countdown Timer.
e. As each test progresses, the software displays the test results in the fields
located just above the
Status Bar.
The IR results appear after 60 seconds,
the DA results after 180 seconds, and the PI test after 600 seconds.
