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5500A Phase Specifications
10 to 65 Hz
0.15° [1]
Notes
1. For 33 to 1000 V output, burden current <6 mA. For 6 to 20 mA burden current (33
to 330 V), the phase uncertainty is 0.4°.
2. For 33 to 1000 V output, burden current <2 mA. For 2 to 5 mA burden current (33 to
330 V), the phase uncertainty is 1.5°.
3. For 33 to 1000 V output, burden current <2 mA. For 2 to 5 mA burden current (33 to
330 V), the phase uncertainty is 5°.
Phase
Phase
(Φ)
(Φ)
Watts
VARs
0°
90°
5°
85°
10°
80°
15°
75°
20°
70°
25°
65°
30°
60°
35°
55°
40°
50°
45°
45°
50°
40°
55°
35°
60°
30°
65°
25°
70°
20°
75°
15°
80°
10°
85°
5°
90°
0°
Note
1. To calculate exact ac watts power adders due to phase uncertainty for values not
shown, use the following formula:
for a PF of .9205 (Φ = 23) and a phase uncertainty of
adder is:
Adder
1-Year Absolute Uncertainty, tcal + 5 °C, (∆Φdegrees)
65 to 500 Hz
500 to 1 kHz
0.9° [2]
Power Uncertainty Adder due to Phase Error
PF
10 to 65
Hz
1.000
0.00%
0.996
0.02%
0.985
0.05%
0.966
0.07%
0.940
0.10%
0.906
0.12%
0.866
0.15%
0.819
0.18%
0.766
0.22%
0.707
0.26%
0.643
0.31%
0.574
0.37%
0.500
0.45%
0.423
0.56%
0.342
0.72%
0.259
0.98%
0.174
1.49%
0.087
2.99%
0.000
Adder
+
Cos
(23
.
( )
=
−
%
100 1
(
( )
Cos
23
1k to 5 kHz
2.0° [3]
65 to 500
500 to 1
Hz
kHz
0.01%
0.06%
0.15%
0.29%
0.43%
0.58%
0.74%
0.92%
1.11%
1.33%
1.58%
1.88%
2.26%
2.73%
3.38%
4.33%
5.87%
8.92%
17.97%
Φ ∆Φ
Cos
(
( )
=
−
%
100 1
(
( )
Cos
∆Φ
= 0.15, the ac watts power
15
)
=
)
0 11%
.
Multi-Product Calibrator
5k to 10 kHz
6°
10°
1 to 5
5 to 10
kHz
0.55%
1.52%
+
)
. For example:
)
Φ
Specifications
kHz
27
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