Fluke 5520A - Phase Specifications

5520A
Operators Manual
1-24
1-25. Phase Specifications
1-Year Absolute Uncertainty, tcal ± 5 °C, (∆ Φ °)
10 Hz to
65 Hz
65 Hz to
500 Hz
500 Hz to
1 kHz
1 kHz to
5 kHz
5 kHz to
10 kHz
10 kHz to
30 kHz
0.10° 0.25° 0.5° 2.5° 5° 10°
Power Uncertainty Adder due to Phase Error
Phase
(Φ)
Watts
Phase
(Φ)
VARs
PF
10 Hz to
65 Hz
65 Hz to
500 Hz
500 Hz to
1 kHz
1 kHz to
5 kHz
5 kHz to
10 kHz
10 kHz to
30 kHz
0° 90° 1.000 0.00% 0.00% 0.00% 0.10% 0.38% 1.52%
10° 80° 0.985 0.03% 0.08% 0.16% 0.86% 1.92% 4.58%
20° 70° 0.940 0.06% 0.16% 0.32% 1.68% 3.55% 7.84%
30° 60° 0.866 0.10% 0.25% 0.51% 2.61% 5.41% 11.54%
40° 50° 0.766 0.15% 0.37% 0.74% 3.76% 7.69% 16.09%
50° 40° 0.643 0.21% 0.52% 1.04% 5.29% 10.77% 22.21%
60° 30° 0.500 0.30% 0.76% 1.52% 7.65% 15.48% 31.60%
70° 20° 0.342 0.48% 1.20% 2.40% 12.08% 24.33% 49.23%
80° 10° 0.174 0.99% 2.48% 4.95% 24.83% 49.81% 100.00%
90° 0° 0.000
   
Note
1. To calculate exact ac watts power adders due to phase uncertainty for values not
shown, use the following formula:
()
()
Adder
Cos
Cos
%(
()
=−
+
100 1
Φ∆Φ
Φ
) . For example:
for a PF of .9205 (Φ = 23) and a phase uncertainty of
∆Φ
= 0.15, the ac watts power
adder is:
()
()
Adder
Cos
Cos
%(
(23 )
=−
+
=100 1
15
23
011%
.
).