User's Manual

Insulation Testers

Performance Tests

5. Press T, and verify that the UUT reading is within the display reading limits

shown in Table 9.

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

COM and

Ω terminals.

7. Set the Fluke 5320A to the high resistance source function (H).

8. Press T, and verify that the reading is within the display reading limits for

Table 9, Step 4.

Table 9. Earth Bond Resistance Tests

Display Reading

Step Tester Range Applied Display Units

Low Limit High Limit

1 20.00 Ω 2.0 Ω Ω 1.94 2.06

2 2000 Ω 810.0 Ω Ω 795 825

3 2000 Ω 990.0 Ω Ω 972 1008

4 20.00 kΩ 18.0 kΩ kΩ 17.70 18.30

2-Ohm Output Current Test

The following procedure verifies the minimum current for a 2-Ω Load in continuity

function:

1. Connect the Fluke 5320A low resistance output terminal to the UUT

COM and Ω

terminals.

2. Set the Fluke 5320A to the low resistance source function (L) and 2-Ω output.

3. Set the UUT rotary function switch to the Ω function.

4. Press the UUT T. The Fluke 5320A current reading should be > 200 mA.

Open Circuit Voltage Test

The following test confirms that the open circuit voltage for the UUT Ω function is

within limits.

1. Connect the Fluke 5320A

V and COM meter terminals directly to the UUT Ω and

COM terminals observing correct polarity.

2. Set the Fluke 5320A to the M mode and dc volts.

3. Set the UUT rotary function switch to the

Ω function.

4. Press T and verify that the Fluke 5320A voltage reading is > 4.0 V but

< 8.0 V.