Derating Curve - Delta C2000 Plus Series User Manual

Chapter 9 Specification C2000 Plus

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
UL Type I / IP20
UL Open Type / IP20
Ambient Temperature Derating Curve
230V／460V models
100
90
80
70
60
50
30
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.
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.
Derating for Ambient Temperature
35 40
Ambient Temperature (°
HD / SHD [Fc = Default] (UL Open Type)
HD / SHD [Fc = Default] (UL Open Type_Side by Side or UL Type 1)
Operating Environment
45 50
C )
9-14
Table 9-11
55 60
Figure 9-2