Dr. Fuld

Dr. Fuld Ing.-GmbH
Frankfutrer Landstr. 112

D-61352 Bad Homburg

Fon: + 49 6172 928 928
Fax: + 49 6172 928 927

gf@fuld.de

Limits of the Current Harmonics according to EN 61000-3-2/VDE 0838 Part 2

Class A: Symmetrical three-phase appliances and all other appliances, which are not referred in one of the other classes

Class B: Portable electric power tools

Class C: Lighting equipment inclusively dimmers

Class D: After the modification EN 61000-3-2/A14 the validity of the class D is limited to TV and broadcast receivers , PCs and monitors

The limits do not apply to a nominal input power of less than 75W (except for lighting equipment) and to dimmers with a input power of less than 1 kW.

Note: Limits values for professional devices with more than 1 KW of capacity still are in consultation

Limits

Order of harmonic n

Class A

A

Class B

A

Class C

I _n/I ₁ in %

Class D

mA/W

Odd harmonics

3

2,3

3,45

30 * l

3,4

5

1,14

1,71

10

1,9

7

0,77

1,16

7

1

9

0,4

0,6

5

0,5

11

0,33

0,5

3

0,35

13

0,21

0,32

3

0,3

15 - 39

0,15 * 15/n

0,22515/n

3

3,85/n

Even harmonics

2

1,08

1,62

2

4

0,43

0,65

6

0,3

0,45

8 - 40

0,238/n

0,35*8/n

After the modification EN61000-3-2/A14 with variable load the average values of the harmonics should not exceed the limit values