Fluke 5500A, Руководство по обслуживанию

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5500A
Service Manual
1-22
5500A Phase Specifications (cont.)
Phase
(
Φ
)
Phase
(
Φ
)
PF Power Uncertainty Adder due to Phase Error
Watts VARs
10 to 65 Hz 65 to 500 Hz 500 to 1 kHz 1 to 5 kHz 5k to
10 kHz
0 degrees 90 degrees 1.000 0.00% 0.01% 0.06% 0.55% 1.52%
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
    
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%
.
) .