User's Manual

150X Series

Calibration Manual

Table 5. Insulation Resistance Accuracy Test

Display Reading Limits

Step

Insulation

Voltage Range

Applied Display Units

1503 1507/1508

1 1000 V 9 GΩ N/A 7.8 to 10.2

2 1000 V 1.9 GΩ 1862 to 1938 N/A

3 1000 V 1 MΩ 0.5 to 1.5 0.5 to 1.5

4 1000 V 49 MΩ 47.5 to 50.5 47.8 to 50.2

5 1000 V 60 MΩ 58.3 to 61.7 58.6 to 61.4

6 500 V 500 kΩ 0.44 to 0.56 0.44 to 0.56

7 250 V 250 kΩ N/A 0.20 to 0.30

8 100 V 100 kΩ N/A 0.6 to 0.15

9 50 V 50 kΩ

MΩ

N/A 0.0 to 0.10

Insulation Function, External Sense

The following test verifies that the Tester will sense a voltage > 30 V when present on the

circuit under test.

1. Connect the UUT

INSULATION and COM output terminals to the Fluke 5320A

voltage output terminals.

2. Set the 5320A to the voltage output function (V).

3. Turn the UUT rotary function switch to an insulation function.

4. Apply 35 V, 50 Hz to the UUT.

5. Verify that the UUT displays > 30 V in the primary display, and the red LED

lightning bolt comes on.

Source Voltage Accuracy Test, "R" Nominal

Complete the test steps in Table 6 to verify source voltage of the insulation function

under load. If using the Fluke 5320A, use the high resistance function to verify source

voltage.

1. Connect the Fluke 5320A high resistance output terminals to the UUT

INSULATION and COM terminals.

2. Put the Fluke 5320A in the high resistance function (H).

3. Set the Fluke 5320A for the applied load shown in Table 6 for Steps 1-5.

4. Press T and verify that the UUT and Fluke 5320A voltage readings are

within the limits of Table 6. Record both of these readings.

5. Using the Fluke 5320A voltage reading as the reference, calculate the UUT

voltage reading error %, (5320A V - UUT V / 5320A V) x 100, and record for

later use.