Cirrus Logic AN362 - Manual (Page 8)

AN362
8 AN362REV1
4.1Accuracy Results for Active Energy Load Performance
Figure 7. Active Energy Load Performance vs IEC 62053-22 Class 0,2S Standard
Power Factor Load Current (A) Current Dynamic Range (x:1) Error
PF = 1
100 1 0.04%
10 10 0.03%
1 100 0.04%
0.2 500 0.03%
0.1 1000 0.04%
0.05 2000 0.01%
0.03 3333 0.03%
0.025 4000 0.09%
Lagging PF = 0.5
100 1 -0.02%
10 10 0.07%
1 100 0.11%
0.2 500 0.11%
0.1 1000 0.09%
0.05 2000 0.05%
Leading PF = 0.5
100 1 0.08%
10 10 0.00%
1 100 -0.04%
0.2 500 -0.08%
0.1 1000 -0.14%
0.05 2000 -0.14%
Table 4. Active Energy Load Performance
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.01 0.1 1 10 100
P
e
rcent E
rror (%)
Load Current (A)
PF = 1 Lagging PF = 0.5 Leading PF = 0.5
IEC 62053-22 Class 0,2S Spec, PF = 1
IEC 62053-22 Class 0,2S Spec, Lagging PF = 0.5 or Leading PF = 0.8
Note: CS5480, where U
n
= 240 V, I
b(max)
= 2.5 (100 A) at 50 Hz