Delta VFD220C43A-21 - Derating Curve

Chapter 9 Specification C2000 Plus
9-14
9-7 Derating Curve
 For more information on calculation for derating curve, refer to Pr.06-55.
 When choosing the correct model, consider factors such as ambient temperature, altitude, carrier
frequency, control mode, and so on. That is,
Actual rated current for application (A) = Rated output current (A) x Ambient temp. rated derating (%)
x Altitude rated derating (%) x (Normal / Advanced control) carrier frequency rated derating (%)
Protection Level
Operating Environment
UL Type I / IP20
230V / 460V models:
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–40°C. If the temperature is above 40°C, decrease 2% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 60°C.
575V / 690V models:
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–40°C. If the temperature is above 40°C, decrease 2.5% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 60°C.
UL Open Type / IP20
230V / 460V models:
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–50°C. If the temperature is above 50°C, decrease 2% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 60°C.
575V / 690V models:
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–50°C. If the temperature is above 50°C, decrease 2.5% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 60°C.
Table 9-11
Ambient Temperature Derating Curve
230V／460V models
50
60
70
80
90
100
30 35 40 45 50 55 60
Drive's Rated Output Current (%)
Ambient Temperature (° C )
Derating for Ambient Temperature
HD / SHD [Fc = Default] (UL Open Type)
HD / SHD [Fc = Default] (UL Open Type_Side by Side or UL Type 1)
Figure 9-2