Intel ATX12V manual Input Line Current Harmonic Content and Line Flicker, Magnetic Leakage Fields

ATX12V Power Supply Design Guide

Version 2.0 Final Review Copy

6.3. Input Line Current Harmonic Content and Line Flicker

For sales in EU (European Union) or Japan the power supply shall meet the requirements of EN61000-3-2 Class D and the Guidelines for the Suppression of Harmonics in Appliances and General Use Equipment Class D for harmonic line current content at full rated power. See Table 16 for the harmonic limits.

Table 16. Harmonic Limits, Class D Equipment

Harmonic Order

n

Per: EN 61000-3-2	Per: JEIDA MITI
Maximum permissible Harmonic	Maximum permissible Harmonic
current at 230 VAC / 50 Hz in Amps	current at 100VAC / 50 Hz in Amps

Odd harmonics

3

5

7

9

11

13

15≤ n ≤39

2.3

1.14

0.77

0.4

0.33

0.21

0.15 x (15/n)

5.29

2.622

1.771

0.92

0.759

0.483

0.345 x (15/n)

6.4. Magnetic Leakage Fields

A PFC choke magnetic leakage field should not cause any interference with a high- resolution computer monitor placed next to or on top of the end-use chassis.

40