An362 – Cirrus Logic AN362 User Manual
Page 12

AN362
12
AN362REV1
5.1Accuracy Results for Active Energy Load Performance
Figure 11. 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
0.02%
10
10
0.01%
1
100
0.02%
0.2
500
0.00%
0.1
1000
0.06%
0.05
2000
0.06%
0.03
3333
0.05%
0.025
4000
0.03%
Lagging PF = 0.5
100
1
-0.02%
10
10
0.02%
1
100
0.02%
0.2
500
-0.03%
0.1
1000
-0.02%
0.05
2000
0.04%
Leading PF = 0.5
100
1
-0.01%
10
10
0.01%
1
100
-0.04%
0.2
500
-0.09%
0.1
1000
-0.03%
0.05
2000
0.04%
Table 7. Active Energy Load Performance
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.01
0.1
1
10
100
Pe
rc
e
n
t Er
ror (
%
)
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