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42
Tips
4.3 Temperature Compensation
1. R 10 Min = Resistance value measured 10 minutes after applying the test voltage
2. R 1 Min = R 60 Sec = Resistance value measured 1 minute after applying the test voltage
3. R 30 Sec = Resistance value measured 30 seconds after applying the test voltage
4. R 15 Sec = Resistance value measured 15 seconds after applying the test voltage
1. It can be used for obtaining the insulation resistance under a temperature other than current ambient temperature.
2. The tester converts the measured value of resistance to the insulation resistance under a reference temperature, and
displays the result.
3. Depending on the different properties of test objects, there are 10 modes of compensation
(for details, see attached table 1).
4. The reference temperature can be set as any temperature in the range of reference temperature which depends on the
mode of compensation, and the range of test temperature for conversion also depends on the mode of compensation
(see attached table 1).
Displayed PI, DAR values
One or more values of resistance are not successfully measured.
One or more values of resistance exceed the measuring range.
The first measured value is 0.
---
Description
4.2.2 Operation procedures
Standby status
Push ’MEASURE’button
to stop test.
Push ’MEASURE’button
to start test.
Push ‘SELECT’ button
to check PI, DAR data.
Tips
Note 1: In order to display DAR value, AVERAGE function must be turned off before measuring.
Note 2: In order to display PI value, the time spent for measuring insulation resistance must be longer than 10 minutes (under
the default situation).
Note 3: In order to display DAR value, the measuring time must be longer than 1 minute.
Note 4: When pushing ‘SELECT’ button to review data, the displayed data will switch in the following order:
Insulation resistance
Leak current
DAR 1 min/15 s
DAR 1 min/30 s
PI
Insulation resistance
Note 5: If the measurement is stopped before the set time expires, the screen will display ‘---’.
Note 6: If TC function is turned on, then PI and DAR values cannot be displayed.
Note 7: PI and DAR values also cannot be displayed under the mode of step-voltage measurement.
Note 8: If the value of insulation resistance flashes, the displayed value might be incorrect (because resistance changes
rapidly before the preset time is reached, so that the internal circuit cannot respond to it; The measuring range needs
to be changed); If the value of resistance flashes, then PI and DAR values can only be used as a rough reference;
Please carry out measurement again.
Note 9: The following table describes the meaning of special displaying for PI and DAR.
>999
PI or DAR value is greater than 999.
<0.01
PI or DAR value is less than 0.01.
4.3.1 Application
