Fluke 41B - Testing Watts, VA, VAR Performance; Testing Record Mode Performance

39/41B
Service Manual
4-8
4-8. Testing Watts, VA, VAR Performance
Perform the following procedure to test the watts, VA, and VAR functions of the Tester.
Warning
Ensure that the calibrator is in standby mode before making
any connection between the calibrator and Tester. dangerous
voltages may be preSent on the leads and connectors.
1. Connect the equipment as shown in Figure 4-1. Calibrator “A” should have a range
of 5V to 100V ac and calibrator “B” should have a range of 35 mV to 1.4V ac.
2. Set the output amplitude from the calibrators, to the values in Table 4-4.
3. Enable the Phase Lock mode on calibrator “B”.
4. Using the Phase Shift function on calibrator “A”, adjust the phase to within ±0.5
degrees of the phase shift specified in Table 4-4.
5. Press F until W is displayed in the upper right had corner.
6. Press M until the Tester is in the Text Screen mode. Verify that the W/KW,
VA/KVA and VAR/KVAR readings are within the minimum and maximum limits
specified in Table 4-4.
7. Press M until the Tester is in the Harmonics screen mode. Verify that the
fundamental frequency phase angle readings are between the minimum and
maximum readings listed in Table 4-4.
Table 4-4. Watts Performance, Line Frequency
Calibrator Output Performance Limits
W/kW VA/kVA VARs/kVARs Phase
Volts Phase Amps (mV)
Min Max Min Max Min Max Min Max
5.00 0.00 30.00 144 156 144 156 0 4 -2 2
8.00 0.00 30.00 233 247 233 247 0 4 -2 2
100.00 157.00 150.00 -14.3 -13.2 14.4 15.6 5.4 6.4 155 159
100.00 157.00 360.00 -37 -28 31 41 10 19 155 159
10.00 46.00 1300.00 8.5 9.6 12.4 13.6 8.8 9.9 44 48
100.00 46.00 1300.00 85 96 124 136 88 99 44 48
4-9. Testing Record Mode Performance
1. The equipment setup from the previous performance test, apply the last set of values
from Table 4-4 to the Tester.
2. Press R and then E.
Examine Max., Avg., and Min. screens for correct readings according to Table 4-4.
Note
No VAR/KVAR in record mode.