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5500A
Service Manual
5500A Phase Specifications (cont.)
Phase
(Φ)
Watts
0 degrees
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
To calculate exact ac watts power adders due to phase uncertainty for values not shown, use the
following formula
a PF of .9205
Adder
1-22
Phase
PF
(Φ)
VARs
90 degrees
1.000
0.00%
85
0.996
0.02
80
0.985
0.05
75
0.966
0.07
70
0.940
0.10
65
0.906
0.12
60
0.866
0.15
55
0.819
0.18
50
0.766
0.22
45
0.707
0.26
40
0.643
0.31
35
0.574
0.37
30
0.500
0.45
25
0.423
0.56
20
0.342
0.72
15
0.259
0.98
10
0.174
1.49
5
0.087
2.99
0
0.000
( )
=
:
Adder
%
100 1
and a phase uncertainty of ∆Φ
(Φ = 23)
+
Cos
(23
.
15
( )
=
−
%
100 1
(
( )
Cos
23
Power Uncertainty Adder due to Phase Error
10 to 65 Hz
65 to 500 Hz
0.01%
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
(
)
−
.
(
)
For example: for
( )
Φ
Cos
=
)
=
)
0 11%
.
500 to 1 kHz
1 to 5 kHz
0.06%
0.55%
0.15, the ac watts power adder is:
5k to
10 kHz
1.52%
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