9
•
R10 Min = Resistance value measured 10
minutes after applying the test voltage.
•
R1 Min = R60 Sec = Resistance value
measured 10 minutes after applying the test
voltage.
•
R15 Sec = Resistance value measured 10
minutes after applying the test voltage.
•
When Compare function is selected, the Meter beeps and won’t display “PASS”,
when the measuring data is higher than the upper limited value or lower than the
lower limited value.
•
Pressing the COMP button will activate the Compare
function and the Meter will display “COMP” (see
image right).
•
When the preset upper limited value is lower than
the lower limited value, COMP function is invalid and the
Meter will display “- - - -” (see image left).
•
Press COMP to view the upper and lower limited value.
•
The Meter displays “COMP” and either “HI” or “LO”
on the secondary screen (see image right).
COMPARE FUNCTION
TIMER FUNCTION
•
The Timer function can only be activated in the
Insulation test.
•
Enable the Timer function by pressing TIMER.
•
The lock function will be invalid and the Meter will start the Insulation test when
pressing the MEASURE button. When the time is due, the test is stopped.
•
In ‘Timer’ mode, the current voltage and time is shown
on the secondary display.
•
The Meter will display the test voltage when it is under
the insulation test.
•
To check the time, press .
•
Press SELECT to check the preset time.
•
The LCD screen displays “TIMER” and “PRES” is shown
on the primary display, while the secondary display shows the
preset time.
•
Press ENTER and the Meter displays “SEt” (see right).
•
The time can be adjusted by pressing the / .
•
Press ENTER again to confirm the adjustment.
MAX/MIN/AVG
•
In ‘Test’ mode, press the SELECT button to view max, min and average value.
•
In ’Hold’ mode, press the SELECT button to review max, min and average value.
DAR & PI
•
Sometimes an insulation part with obvious drawbacks e.g. the insulation part is
broken through under high voltage, is nevertheless good with absorption ratio.
•
Therefore, absorption ratio cannot be used to discover local insulation drawbacks,
other than dampness and contamination.
DAR (absorbing ratio) =
R
60
Sec
R
15
Sec
PI (polarization index) =
R
10
Min
R
1
Min
