Appendix B Derating; Derating Due To Temperature; Derating Due To Altitude; Derating Due To Carrier Frequency - INVT Goodrive390L Series User Manual

Goodrive390L Series Lift-Dedicated VFD
If the ambient temperature at the VFD installation site exceeds 40°C, the VFD installation
site altitude exceeds 1000m, a cover with heat dissipation vents is used, or the carrier
frequency is higher than the recommended (see P00.14), the VFD needs to be derated.
B.1 Derating due to temperature
When the temperature is higher than +40°C, the rated output current is derated by 1% for
each increased 1°C.
Note: It is not recommended to use the VFD at an environment with the temperature
higher than 50°C. If you do, we shall not hold accountable for the consequences caused.
B.2 Derating due to altitude
When the VFD installation site altitude is lower than 1000m, the VFD can run at the rated
power. When the altitude exceeds 1000m, derate by 1% for every increase of 100m. When
the altitude exceeds 3000m, consult our local dealer or office for details.
B.3 Derating due to carrier frequency
The carrier frequency of the VFD varies with power class. The VFD rated power is defined
based on the carrier frequency factory setting. If the carrier frequency exceeds the factory
setting, the VFD power is derated by 20% for each increased 1 kHz.
202403 (V1.0）

Appendix B Derating

Derating
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