8
Figure 1 - The result of an insulation resistance test (IR)
Test settings: T1 and T2 times set in order to measure the DAR
Test conditions: test runs for longer than 10 minutes as this is required
for a PI reading.
details available when scrolling the secondary display will depend upon
the test mode selected, whether timers T1 and T2 have been set, and
the duration of the test. The digital display toggles between insulation
resistance and current.
In the ‘IR’, ‘PI’, and ‘DD’ modes the secondary display initially shows the
PI (polarity index), DAR (dielectric absorption ratio), and, on completion
of the test, the TC (time constant) and capacitance measurements.
Further presses of the
Ω
/I button cycles the display through insulation
resistances, currents, and the filter setting.
In the ‘SV’ (step voltage) mode, the secondary display cycles through
insulation resistances, currents, and the filter setting.
Figures 1 to 4 illustrate the display status for sequential ‘
Ω
/I’ key presses
in the different modes.
Press
Ω
/I
Press
Ω
/I
Press
Ω
/I
Press
Ω
/I
