Derating Factors - Siemens SIMOTICS M 1PH8 Configuration Manual

Motor description
3.3 Derating factors
You can assign the SIMOTICS M‑1PH8 main motors to climate class 3K4 with the exception of
the environmental parameter "condensation". Condensation is not permissible.
The higher the last number in the climate class 3K☐, the greater the requirements of the
motor.
Table 3-3 Environmental conditions are based on climate class 3K4
Environmental parameter
a) Low air temperature
b) High air temperature
c) Low relative humidity
d) High relative humidity
e) Low absolute humidity
f) High absolute humidity
g) Rate of temperature change
h) Low air pressure
i) High air pressure
j) Solar radiation
3)
k) Thermal radiation
l) Movement of the air
m) Condensation
n) Wind-driven precipitation
(rain, snow, hail, etc.)
o) Water (other than rain)
p) Formation of ice
Averaged over a period of 5 min
1)
See types of protection
2)
In Central Europe, the midday sun stands at 60 ° to 65 ° and, in ideal weather conditions, shines with an irradiance of approx.
3)
700 watts/square meter. In winter, the angles are only 13 ° to 18 ° and, even at noon, the irradiance is only approx. 247 watts/
square meter.
You will find additional data on the ambient conditions, such as ambient temperatures
or conditions for transport and storage of the motors, in the relevant chapters of this
documentation.
3.3

Derating factors

Derating for ambient/coolant temperature
Operation: T = -15 °C bis +40 °C (without restriction)
Under conditions other than those specified above (ambient temperature > 40 °C or installation
altitude > 1000 m above sea level), the permissible torque/power reduction must be considered
(see Chapter "Ambient/coolant temperature (Page 67)")
34
1)
Unit
°C
°C
%
%
g/m
3
g/m 3
°C/min
kPa
kPa
W/m
2
-
m/s
- Not permissible
-
-
-
1PH8 SIMOTICS M main motors
Configuration Manual, 12/2022, A5E51895839A
3K4 class
+ 5
+ 40
5
95
1
29
0.5
70
106
700
2)
1.0
-
2)
-