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Table 1 IEEE practice and specification for harmonic control

From: Harmonic generation of variable speed drive under complex-voltage unbalance conditions

Isc/IL

3 < h< 11

11 < h < 17

17 < h < 23

17 < h < 35

35 < h < 50

TDD

h < 20

4.0

2.0

1.5

0.6

0.3

5.0

20 < h < 50

7.0

3.5

2.5

1.0

0.5

8.0

50 < h < 100

10.0

4.5

4.0

1.5

0.7

12.0

100 < 1000

12.0

5.5

5.0

2.0

1.0

15.0

h > 1000

15.0

7.0

6.0

2.5

1.4

20.0

  1. where h = harmonic number