Fluke 52120A - Page 97

Calibration
Introduction 5
5-27
8. Set the current, frequency, and phase angle to the values in Table 5-15.
Table 5-15. Phase Angle Verification on 20 Amp Range
6105A
Measured
Angle
Product
Specification
Measurement
Uncertainty
TUR
RMS Frequency
Phase
Angle
20 A 200 Hz 0 ° 0.025 ° 0.020 ° 1:3
20 A 850 Hz 0 ° 0.045 ° 0.020 ° 2.3:1
20 A 850 Hz -90 ° 0.045 ° 0.020 ° 2.3:1
20 A 850 Hz +90 ° 0.045 ° 0.020 ° 2.3:1
6 A 2907 Hz
[1]
0 ° 0.325 ° 0.030 ° 10:1
4 A 5643 Hz
[2]
0 ° 0.645 ° 0.040 ° 16:1
[1] Fundamental zero amplitude, 51
st
harmonic of 57 Hz at 6 A
[2] Fundamental zero amplitude, 99
th
harmonic at 4 A
9. Connect the 100 A shunt between the 6105A and the second input to the phase meter.
10. Set the 6105A range to 1 x Ext 120A.
11. Set the current, frequency, and phase angle to the values in Table 5-16.
Table 5-16. Phase Angle Verification on 120 Amp Range
6105A
Measured
Angle
Product
Specification
Measurement
Uncertainty
TUR
RMS Frequency
Phase
Angle
100 A 200 Hz 0 ° 0.025 ° 0.020 ° 1:3
100 A 850 Hz 0 ° 0.045 ° 0.020 ° 2.3:1
100 A 850 Hz -90 ° 0.045 ° 0.020 ° 2.3:1
100 A 850 Hz +90 ° 0.045 ° 0.020 ° 2.3:1
36 A 2907 Hz
[1]
0 ° 0.325 ° 0.030 ° 10:1
24 A 5643 Hz
[2]
0 ° 0.645 ° 0.040 ° 16:1
[1] Fundamental zero amplitude, 51
st
harmonic of 57 Hz at 36 A
[2] Fundamental zero amplitude, 99
th
harmonic at 24 A