Odd and even harmonics

THD limit

Current THD (%)

3, 5, 7 and 9

4%

11, 13 and 15

2%

7, 19 and 21

1.5%

23, 25, 27, 29, 31 and 33

0.6%

2, 4, 6 and 8

1%

10 - 32

0.5%