Derating depending on the ambient temperature

The following figure shows the IN motor reduction depending on the ambient temperature:

[1]

6% IN per K from 40 °C
at nominal line voltage Vline = 3 × AC 400 V.

[2]

4.5% IN per K from 35 °C
6% IN per K from 50 °C
at nominal line voltage Vline = 3 × AC 500 V.