I Nominal Test; I Limit Test; Testing The Ohm Function; Earth Bond Resistance Accuracy Tests - Fluke 150 Series Calibration Manual

150X Series
Calibration Manual

I Nominal Test

The following test verifies the UUT's ability to maintain the nominal insulation test
current while loaded.
Step Function
1 Insulation
2 Insulation
Insulation
3
(1507/1508)
Insulation
4
(1507/1508)
Insulation
5
(1507/1508)

I Limit Test

The following test verifies the UUT's internal insulation function and current limit
operation.

Testing the Ohm Function

Earth Bond Resistance Accuracy Tests

To test earth bond resistance accuracy, complete the test steps in Table 9, using the
following procedure:
20
1. Connect the Fluke 5320A high resistance output terminals to the UUT
and
INSULATION COM
2. Set the 5320A to the high resistance source function (H).
3. Set the 5320A for the Applied Load called out in Table 8 for Steps 1-5.
4. Press T and verify that the Fluke 5320A current reading is
> 1000.0 μA for steps 1-5.
Table 8. I Nominal Test/Limit Test
Range
1000 V
500 V
250 V
100 V
50 V
1. Connect the Fluke 5320A high resistance output terminals to the UUT
and
INSULATION COM
2. Set the Fluke 5320A to the high resistance source function (H) and 50 kΩ.
3. Set the UUT rotary switch to the 1000 V range.
4. Press and hold the T key.
5. The Fluke 5320A current reading should be <2000.0 μA.
1. Connect the UUT
COM
output terminals in a 4-wire configuration.
2. Set the Fluke 5320A to the low resistance source function (L).
3. Turn the UUT rotary function switch to the Ω function.
4. Apply the calibrator output listed in Table 9, Steps 1-3.
riešenia na presné meranie
terminals.
Applied Load
1 MΩ
500 kΩ
250 kΩ
100 kΩ
50 kΩ
terminals.
and Ω terminals to the Fluke 5320A low resistance
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5320A Current Reading
> 1000.0 μA
> 1000.0 μA