Cirrus Logic AN362 - Manual (Page 4)

AN362
4 AN362REV1
3.1Accuracy Results for Active Energy Load Performance
Figure 3. 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
80 1 0.04%
8 10 0.04%
0.8 100 0.04%
0.16 500 0.04%
0.08 1000 0.07%
0.04 2000 0.05%
0.03 3333 0.06%
0.02 4000 0.02%
Lagging PF = 0.5
80 1 0.05%
8 10 0.05%
0.8 100 0.04%
0.16 500 0.06%
0.08 1000 0.05%
0.04 2000 0.06%
Leading PF = 0.5
80 1 0.04%
8 10 0.04%
0.8 100 0.05%
0.16 500 0.04%
0.08 1000 0.05%
0.04 2000 0.07%
Table 1. Active Energy Load Performance
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.01 0.1 1 10 100
Percent Error (%
)
Load Current (A)
PF = 1 Lagging PF = 0.5 Leading PF = 0.5
Note: CS5480, where U
n
= 240 V, I
b(max)
= 2 (80 A) at 50 Hz
IEC 62053-22 Class 0,2S Spec, Lagging PF = 0.5 or Leading PF = 0.8
IEC 62053-22 Class 0,2S Spec, PF = 1