Derating

The following table shows the derating of the HF.. output filter depending on line voltage and output frequency.

Additional derating of 3% I_N/K for ambient temperatures above 45 °C can be found in chapter Technical data.

Output frequency	Permissible filter current I/I_N
0 – 10 Hz - without UZ connection at 400 V - with UZ connection at 400 V - without UZ connection at 500 V - with UZ connection at 500 V	100% 100% 100% 70% + 1.5% × output frequency	100% 100% 100% 10% + 9% × output frequency
11 – 20 Hz - without UZ connection at 400 V - with UZ connection at 400 V - without UZ connection at 500 V - with UZ connection at 500 V	100% 100% 100% 70% + 1.5% × output frequency	100% 100% 100% 100%
21 – 149 Hz - with and without UZ connection	100%	100%
150 – 250 Hz - with and without UZ connection	100% - 0.1% × (output frequency - 150 Hz)	100% - 0.2% × (output frequency - 150 Hz)

Output frequency

Permissible filter current I/I_N

Nominal filter current ≤ 46 A

Nominal filter current ≥ 65 A

0 – 10 Hz

- without UZ connection at 400 V

- with UZ connection at 400 V

- without UZ connection at 500 V

- with UZ connection at 500 V

100%

70% + 1.5% × output frequency

100%

10% + 9% × output frequency

11 – 20 Hz

- without UZ connection at 400 V

- with UZ connection at 400 V

- without UZ connection at 500 V

- with UZ connection at 500 V

100%

70% + 1.5% × output frequency

100%

21 – 149 Hz

- with and without UZ connection

100%

150 – 250 Hz

- with and without UZ connection

100% - 0.1% × (output frequency - 150 Hz)

100% - 0.2% × (output frequency - 150 Hz)

Short-time operation without speed derating, e.g., startup