Full-Scale Insulation Resistance Accuracy Test, 1000 V Range (Models 1507 And 1508) - Fluke 150 Series Calibration Manual

Step
1.
2.
3.
4.
5.
6.
7.

Full-Scale Insulation Resistance Accuracy Test, 1000 V Range (Models 1507 and 1508)

9-GΩ Resistor Test
Accuracy Test
Downloaded from Elcodis.com electronic components distributor
Table 4. Insulation Resistance Accuracy Test
Insulation
Voltage Range
1000 V
1000 V
1000 V
1000 V
500 V
250 V
100 V
The following test verifies the full-scale accuracy of the 1000 V range using a separate
9-GΩ resistor. Prior to performing the accuracy test, verify that the 9-GΩ resistor is
within specifications as follows:
1. Make a divider network using a certified precision 50-kΩ resistor (within
+/- 0.1% accuracy) in series with the 9-GΩ resistor.
2. Connect the calibrator and UUT to the resistor divider as shown in Figure 6.
3. Set the UUT to the mV function.
4. Set the output of the calibrator to 1000 V.
5. Check that the UUT reading is within 5.34 to 5.66 mV.
6. Set the calibrator for 0 V output and remove the calibrator from the divider
network.
1. Remove the 50-kΩ resistor from the divider.
2. Connect the 9-GΩ resistor to the UUT
3. Turn the UUT rotary function switch to the 1000 V range.
4. Push the T key and verify that the display reading is within the limits of
7.8 to 10.2 GΩ.
Applied Display Units
1.9 GΩ
1 MΩ
49 MΩ
MΩ
60 MΩ
500 kΩ
250 kΩ
100 kΩ
INSULATION
Insulation Testers
Performance Tests
Display Reading Limits
1503 1507/1508
1862 to 1938 n/a
0.5 to 1.5 0.5 to 1.5
47.5 to 50.5 47.8 to 50.2
58.3 to 61.7 58.6 to 61.4
0.44 to 0.56 0.44 to 0.56
n/a 0.20 to 0.30
n/a 0.6 to 0.15
terminals.
19