Phase Specifications - Fluke 5520A Service Manual

1-21. Phase Specifications

10 Hz to 65 Hz to
65 Hz 500 Hz
0.10 0.25
Phase Phase
( ) ( )
Watts VARs
0 90 1.000
10 80 0.985
20 70 0.940
30 60 0.866
40 50 0.766
50 40 0.643
60 30 0.500
70 20 0.342
80 10 0.174
90 0 0.000
To calculate exact ac watts power adders due to phase uncertainty for
values not shown, use the following formula:
Adder % 100 1
For example: for a PF of .9205 ( = 23) and a phase uncertainty of
= 0.15, the ac watts power adder is:
Adder % 100 1
1-Year Absolute Uncertainty, tcal
500 Hz to
1 kHz
0.5
Power Uncertainty Adder due to Phase Error
PF
10 Hz to 65 Hz to
65 Hz 500 Hz
0.00% 0.00%
0.03% 0.08%
0.06% 0.16%
0.10% 0.25%
0.15% 0.37%
0.21% 0.52%
0.30% 0.76%
0.48% 1.20%
0.99% 2.48%
Note
Cos ( )
.
( )
Cos
Cos (23 . 15 )
( ) 0 11% .
Cos 23
Introduction and Specifications
5 C, ( )
1 kHz to 5 kHz to
5 kHz 10 kHz
2.5 5
500 Hz 1 kHz
to to
1 kHz 5 kHz
0.00% 0.10%
0.16% 0.86%
0.32% 1.68%
0.51% 2.61%
0.74% 3.76%
1.04% 5.29%
1.52% 7.65%
2.40% 12.08%
4.95% 24.83%
Specifications
10 kHz to
30 kHz
10
5 kHz 10 kHz
to to
10 kHz 30 kHz
0.38% 1.52%
1.92% 4.58%
3.55% 7.84%
5.41% 11.54%
7.69% 16.09%
10.77% 22.21%
15.48% 31.60%
24.33% 49.23%
49.81% 100.00%
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