Cirrus Logic AN362 - Manual (Page 9)

AN362
AN362REV1 9
4.2Accuracy Results for Reactive Energy Load Performance
Figure 8. Reactive Energy Load Performance vs IEC 62053-23 Class 2 Standard
Power Factor Load Current (A) Current Dynamic Range (x:1) Error
sin  = 1
100 1 -0.05%
10 10 -0.03%
1 100 -0.01%
0.2 500 -0.03%
0.1 1000 -0.02%
0.05 2000 -0.06%
0.03 3333 -0.06%
0.025 4000 -0.07%
Lagging sin  = 0.5
100 1 0.28%
10 10 0.16%
1 100 0.11%
0.2 500 0.09%
0.1 1000 0.06%
0.05 2000 -0.08%
Leading sin  = 0.5
100 1 -0.29%
10 10 -0.21%
1 100 -0.15%
0.2 500 -0.16%
0.1 1000 -0.16%
0.05 2000 -0.32%
Table 5. Reactive Energy Load Performance
-3
-2
-1
0
1
2
3
0.01 0.1 1 10 100
Pe
rc
e
n
t Er
ror (
%
)
Load Current (A)
sin ࢥ = 1 Lagging sin ࢥ = 0.5 Leading sin ࢥ = 0.5
Note: CS5480, where U
n
= 240 V, max = 2.5 (100 A) at 50 Hz
IEC 62053-23 Class 2 Spec, sin ࢥ = 0.5
IEC 62053-23 Class 2 Spec, sin ࢥ = 1