Fluke 150X Series - Insulation Function External Sense; Source Voltage Accuracy Test (R-Nominal)

150X Series
Calibration Manual
16
Insulation Function, External Sense
This test verifies that the Tester will sense a voltage >30 V when present on the circuit under
test.
1. Connect the DUT
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 DUT rotary function switch to an insulation function.
4. Apply 35 V, 50 Hz to the DUT.
5. Verify that the DUT 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 Ta b l e 6 to verify source voltage of the insulation function under
load. If you use the Fluke 5320A, use the high resistance function to verify source voltage.
1. Connect the Fluke 5320A high resistance output terminals to the DUT
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 Ta b l e 6 for Steps 1-5.
4. Press T and verify that the DUT and Fluke 5320A voltage reads within the limits of
Ta b l e 6 . Record both readings.
5. Use the Fluke 5320A voltage reading as the reference and calculate the DUT voltage
reading error %, (5320A V - DUT V / 5320A V) x 100, and record for later use.
Table 6. Source Voltage Accuracy Test, R-Nominal
Step
DUT
Function
Te s t e r
Range
Applied
Load
5320A Display
Reading
DUT Display
Reading
DUT Voltage
Reading
Error %
1 Insulation 1000 V 1 MΩ 1000 V to 1200 V 1000 V to 1200 V
2 Insulation 500 V 500 k 500 V to 600 V 500 V to 600 V
3
Insulation
(1507/1508)
250 V 250 kΩ 250 V to 300 V 250V to 300 V
4
Insulation
(1507/1508)
100 V 100 kΩ 100 V to 120 V 100 V to 120 V
5
Insulation
(1507/1508)
50 V 50 kΩ 50 V to 60 V 50 V to 60 V