Cirrus Logic AN362 - Manual (Page 5)

AN362
AN362REV1 5
3.2Accuracy Results for Reactive Energy Load Performance
Figure 4. Reactive Energy Load Performance vs IEC 62053-23 Class 2 Standard
Power Factor Load Current (A) Current Dynamic Range (x:1) Error
sin  = 1
80 1 0.00%
8 10 0.01%
0.8 100 0.01%
0.16 500 -0.02%
0.08 1000 -0.02%
0.04 2000 -0.01%
0.03 3333 0.00%
0.02 4000 -0.03%
Lagging sin  = 0.5
80 1 0.23%
8 10 0.24%
0.8 100 0.17%
0.16 500 0.21%
0.08 1000 0.16%
0.04 2000 0.22%
Leading sin  = 0.5
80 1 -0.20%
8 10 -0.20%
0.8 100 -0.26%
0.16 500 -0.23%
0.08 1000 -0.25%
0.04 2000 -0.24%
Table 2. Reactive Energy Load Performance
-3
-2
-1
0
1
2
3
0.01 0.1 1 10 100
Pe
rc
e
n
t Err
o
r (
%
)
Load Current (A)
sin ࢥ = 1 Lagging sin ࢥ = 0.5 Leading sin ࢥ = 0.5
Note: CS5480, where U
n
= 240 V, I
b(max)
= 2 (80 A) at 50 Hz
IEC 62053-23 Class 2 Spec, sin ࢥ = 0.5
IEC 62053-23 Class 2 Spec, sin ࢥ = 1