Shenzhen Hpmont Technology Co., Ltd Chapter 1 Safety Information and Precautions
HD20 Series Inverters User Manual ―3―
In the altitude exceeded 1000 meters area, since the heatsink efficiency will be reduced because
of the tenuous air, the inverter should be derating. Figure 1-1 is the derating curve of the inverter
rated current and the altitude.
Figure 1-1 Derating curve of inverter rated current and altitude
80%
100%
Inverter’s rated current
Altitude(m)
1000 4000
1
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