Goodrive270 series VFD for fan and pump Technical data
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Appendix B Technical data
B.1 What this chapter contains
This chapter describes the technical data of the VFD and its compliance to CE and other quality
certification systems.
B.2 Derated application
B.2.1 Capacity
Choose a VFD model based on the rated current and power of the motor. To endure the rated power
of the motor, the rated output current of the VFD must be larger or equal to the rated current of the
motor. The rated power of the VFD must be higher or equal to that of the motor.
Note:
 The rated capacity is the capacity at the ambient temperature of 40°C.
 You need to check and ensure that the power flowing through the common DC connection in the
common DC system does not exceed the rated power of the motor.
B.2.2 Derating
If the ambient temperature at the VFD installation site exceeds 40°C, the VFD installation site altitude
exceeds 1000m, a heat sink cover is used, or the carrier frequency is higher than the recommended
(see P00.14 for the recommended frequency), the VFD needs to be derated.
B.2.2.1 Derating due to temperature
When the temperature ranges from +40°C to +50°C, the rated output current is derated by 1% for
each increased 1°C. For the actual derating, see the following figure.
Derating coefficient (%)
Temperature (℃)
-10 0 10 20 30 40 50
100
90
80
60
40
20
Note: It is not recommended to use the VFD at an environment with the temperature higher than
50°C. If you do, you shall be held accountable for the consequences caused.
B.2.2.2 Derating due to altitude
When the altitude of the site where the VFD is installed is lower than 1000 m, the VFD can run at the
rated power. When the altitude exceeds 1000m, derate by 1% for every increase of 100m.
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