Derating Due To Altitude; Derating Due To Carrier Frequency - INVT Goodrive880 Series Hardware Manual

Goodrive880 Series Water-Cooled Drive Hardware Manual
When the coolant is pure water, the device provides 100% of the output current in the temperature range of
5°C to 40°C, and the maximum output current decreases linearly to 80% in the range of 40°C to 50°C.
When the coolant a mixture of water and antifreeze, the device provides 100% of the output current in the
temperature range of 0°C to 40°C, and the maximum output current decreases linearly to 80% in the range of
40°C to 50°C.
The curve of derating coefficient is shown as follows:
Ambient temperature:
When the device works under the ambient temperature of +45–+55℃, the rated current must be derated by
0.5% for each increase of 1℃. The curve of derating coefficient is shown as follows:

2.5.2 Derating due to altitude

The inverter unit needs to be derated by 1% for each increase of 100m when the altitude exceeds 1000m.
Contact our local technical support for model selection when the altitude exceeds 2000m.

2.5.3 Derating due to carrier frequency

Model
GD880-51-0410-6-LC
GD880-51-0530-6-LC
202212 (V1.0)
Figure 2-3 Derating due to coolant temperature
Figure 2-4 Derating due to ambient temperature
Figure 2-5 Derating due to altitude
k
h
1.00
0.70
0.60
1000m
Rated
power
P (kW) 2.5 3.2
100% 88%
400
500 100% 88%
T
4000m
Carrier frequency (kHz)
4 5
76% 62% 53%
76% 62% 53%
Product overview
6 7 8
46% 40%
46% 40%
9