Cirrus-logic AN362 Manual do Utilizador descarregar pdf (Página 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

0.01 0.1 1 10 100

Percent Error (%)

Load Current (A)

sin ࢥ = 1 Lagging sin ࢥ = 0.5 Leading sin ࢥ = 0.5

Note: CS5480, where U

= 240 V, max = 2.5 (100 A) at 50 Hz

IEC 62053-23 Class 2 Spec, sinࢥ = 0.5

IEC 62053-23 Class 2 Spec, sinࢥ = 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Cirrus-logic AN362 Manual do Utilizador Página 9