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Discharge Circuit Test
The following Discharge Circuit Test is a safety related test that verifies input jack wiring
to the PCA, the RSOB contacts, RSOB PCA pads, and other active discharge components
on the PCA.
1. Place a Shorting Bar across the UUT
2. Set the UUT rotary switch to 1000 V, and press T.
3. Release the T key and remove the short from the UUT input terminals.
To avoid damage to the DMM, DO NOT press the UUT T key
during the following steps.
4. Connect the test DMM to the UUT
5. Set the test DMM to Ω function.
6. Verify that the test DMM reading is between 2000 and 3000 Ω.
Testing the Insulation Function
To avoid possible electric shock or personal injury, avoid
contact with the UUT when testing the insulation function.
Pressing the T key produces a potentially dangerous
voltage, at the UUT insulation output terminals, when the Tester
is in the Insulation function.
To avoid damage to the calibrator, do not attempt to use the
5500A, 5520A or other standard calibrator for the insulation
tests.
To avoid damage to the Fluke 5320A, make sure to select the
High Ohms function prior to pushing the UUT T key.
Insulation Resistance Accuracy Tests
To test the insulation resistance accuracy, complete the test steps in Table 5 using the
following procedure:
1. Connect the UUT
Resistance output terminals.
2. Set the Fluke 5320A to the high resistance source function (H).
3. Turn the UUT rotary function switch to an
4. Select the UUT insulation voltage range per Table 5.
5. Apply the Fluke 5320A output called out in Table 5.
6. Press the UUT T key.
7. Verify that the UUT reading is within the display reading limits listed in
Table 5.
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INSULATION
Insulation Testers
Performance Tests
17
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