Atec Fluke-5500A - Manual (Page 18)

5500A Black and White Extended Specifications Fluke Corporation 17
Phase Specifications
1-Year Absolute Uncertainty, tcal ± 5
°C, ( ∆Φ
Degrees)
10 to 65 Hz 65 to 500 Hz 500 Hz to 1 kHz 1 to 5 kHz 5 to 10 kHz
0.15
° [1] 0.9
° [2] 2.0
° [3] 6
° 10 °
[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 degree.
[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 degrees.
[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 degrees.
Power Uncertainty Adder due to Phase Error % Phase ( Φ)
Watts
Degrees
Phase ( Φ)
VARs
Degrees
PF
10 to 65 Hz 65 to 500 Hz
500 Hz to 1
kHz
1 to 5 kHz 5 to 10 kHz
0 90 1.000 0.00 0.01
5 85 0.996 0.02 0.15
10 80 0.985 0.05 0.29
15 75 0.966 0.07 0.43
20 70 0.940 0.10 0.58
25 65 0.906 0.12 0.74
30 60 0.866 0.15 0.92
35 55 0.819 0.18 1.11
40 50 0.766 0.22 1.33
45 45 0.707 0.26 1.58
50 40 0.643 0.31 1.88
55 35 0.574 0.37 2.26
60 30 0.500 0.45 2.73
65 25 0.423 0.56 3.38
70 20 0.342 0.72 4.33
75 15 0.259 0.98 5.87
80 10 0.174 1.49 8.92
85 5 0.087 2.99 17.97
90 0 0.000  
0.06 0.55 1.52
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
0 11%
.
) .
.