MSI MS-9652 Manuel d'utilisateur télécharger pdf (Page 81)

Report No： 088213R-ITCEP07V04

Page: 78 of 131

(b) Limits of Class B Harmonics Currents

For Class B equipment, the harmonic of the input current shall not exceed the maximum

permissible values given in table that is the limit of Class A multiplied by a factor of 1.5.

Harmonics Order

Maximum Permissible harmonic current

Expressed as a percentage of the input

current at the fundamental frequency

％

2 2

30．λ

＊

5 10

7 7

9 5

11  n  39

(odd harmonics only)

＊λ is the circuit power factor

(d) Limits of Class D Harmonics Currents

Harmonics Order

Maximum Permissible

harmonic current per watt

mA/W

Maximum Permissible

harmonic current

3 3.4 2.30

5 1.9 1.14

7 1.0 0.77

9 0.5 0.40

11 0.35 0.33

11  n  39

(odd harmonics only)

3.85/n See limit of Class A

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 133 134

Pas de commentaire

MSI MS-9652 Manuel d'utilisateur Page 81