5502A
Operators Manual
1-20
Phase (Φ)
Watts
Phase (Φ)
VARs
PF
Power Uncertainty Adder due to Phase Error
10 to 65 Hz 65 to 500 Hz 500 Hz to 1 kHz 1 to 5 kHz 5 to 10 kHz
0.00 % 0.01 % 0.06 % 0.55 % 1.52 %
5 ° 85 °
0.996
0.02 % 0.15 % 0.37 % 1.46 % 3.04 %
10 ° 80 °
0.985
0.05 % 0.29 % 0.68 % 2.39 % 4.58 %
15 ° 75 °
0.966
0.07 % 0.43 % 1.00 % 3.35 % 6.17 %
20 ° 70 °
0.940
0.10 % 0.58 % 1.33 % 4.35 % 7.84 %
25 ° 65 °
0.906
0.12 % 0.74 % 1.69 % 5.42 % 9.62 %
30 ° 60 °
0.866
0.15 % 0.92 % 2.08 % 6.58 % 11.54 %
35 ° 55 °
0.819
0.18 % 1.11 % 2.50 % 7.87 % 13.68 %
40 ° 50 °
0.766
0.22 % 1.33 % 2.99 % 9.32 % 16.09 %
45 ° 45 °
0.707
0.26 % 1.58 % 3.55 % 11.00 % 18.88 %
50 ° 40 °
0.643
0.31 % 1.88 % 4.22 % 13.01 % 22.21 %
55 ° 35 °
0.574
0.37 % 2.26 % 5.05 % 15.48 % 26.32 %
60 ° 30 °
0.500
0.45 % 2.73 % 6.11 % 18.65 % 31.60 %
65 ° 25 °
0.423
0.56 % 3.38 % 7.55 % 22.96 % 38.76 %
70 ° 20 °
0.342
0.72 % 4.33 % 9.65 % 29.27 % 49.23 %
75 ° 15 °
0.259
0.98 % 5.87 % 13.09 % 39.56 % 66.33 %
80 ° 10 °
0.174
1.49 % 8.92 % 19.85 % 59.83 % 100.00 %
85 ° 5 °
0.087
2.99 % 17.97 % 39.95 %
90 ° 0 °
0.000 — —
To calculate exact ac watts power adders due to phase uncertainty for values not shown, use the subsequent formula:
()
()
)
)(
1(100%
Φ
ΔΦ+Φ
−=
Cos
Cos
Adder
For example: For a PF of .9205 (Φ = 23) and a phase uncertainty of
ΔΦ
= 0.15, the ac watts power adder is:
()
()
%11.0)
23
)15.(23
1(100% =
+
−=
Cos
Cos
Adder
AC and DC Power Specifications
Power is simulated through the controlled simultaneous outputs of voltage and current from the Calibrator. While the
amplitude and frequency ranges of the outputs are broad, there are certain combinations of voltage and current where the
specifications are valid. In general these are for all dc voltages and currents, and AC voltages of 30 mV to 1020 V, ac
currents from 33 mA to 20.5 A, for frequencies from 10 Hz to 30 kHz. Operation outside of these areas, within the overall
calibrator capabilities, is possible, but it is not specified. The table and figure below illustrate the specified areas where
power and dual output are possible.
Specification Limits for Power and Dual Output Operation
Frequency Voltages (NORMAL) Currents Voltages (AUX)
Power Factor
(PF)
dc
0 to ±1020 V 0 to ±20.5 A 0 to ±7 V
⎯
10 to 45 Hz 33 mV to 32.9999 V 3.3 mA to 2.99999 A 10 mV to 5 V 0 to 1
45 to 65 Hz 33 mV to 1020 V 3.3 mA to 20.5 A 10 mV to 5 V 0 to 1
65 to 500 Hz 330 mV to 1020 V 33 mA to 2.99999 A 100 mV to 5 V 0 to 1
65 to 500 Hz 3.3 to 1020 V 33 mA to 20.5 A 100 mV to 5 V 0 to 1
500 Hz to 1 kHz 330 mV to 1020 V 33 mA to 20.5 A 100 mV to 5 V 0 to 1
1 to 5 kHz 3.3 to 500 V 33 mA to 2.99999 A 100 mV to 5 V 0 to 1
5 to 10 kHz 3.3 to 250 V 33 to 329.99 mA 1 to 5 V 0 to 1
10 to 30 kHz 3.3 V to 250 V 33 mA to 329.99 mA 1 V to 3.29999 V 0 to 1
Notes
The range of voltages and currents shown in “DC Voltage Specifications,” “DC Current Specifications,” “AC Voltage (Sine Wave)
Specifications,” and “AC Current (Sine Wave) Specifications” are available in the power and dual output modes (except minimum
current for ac power is 0.33 mA). Only those limits shown in this table and illustrated in the following figure are specified.
See “Calculate Power Uncertainty” to determine the uncertainty at these points.
The phase adjustment range for dual ac outputs is 0 ° to ±179.99 °. The phase resolution for dual ac outputs is 0.01 °.
To Next Page
Loading...
