Description of the motors
2.2 Technical features and environmental conditions
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
24
Operating Instructions, 07/2021, A5E50610821B AB
2.2.4
Environmental conditions
You can classify the environmental conditions for stationary use at weather-protected
locations according to the standard DIN EN 60721-3-3: 1995-09.
With the exception of environmental influences "Low air temperature", "Low air pressure",
and "Condensation", the motor complies with climate class 3K4.
Table 2- 1
Permissible environmental conditions for the motor based on climate class 3K4
Environmental parameter
Unit
Value
a) Low air temperature
°C
-15
b) High air temperature
°C
+40
c) Low relative humidity
%
5
d) High relative humidity
%
95
e) Low absolute humidity
g/m
3
1
f)
High absolute humidity
g/m
3
29
g) Rate of temperature change
1)
°C/min
0.5
h) Low air pressure
4)
kPa
89
i)
High air pressure
2)
kPa
106
j)
Solar radiation
W/m
2
700
k) Thermal radiation
-
-
l)
Air movement
3)
m/s
1.0
m) Condensation
-
Not permissible
n) Wind-driven precipitation
(rain, snow, hail, etc.)
-
-
o) Water (other than rain)
-
See degree of protection
p) Formation of ice
-
-
1)
Averaged over a period of 5 min.
2)
Conditions in mines are not considered.
3)
A cooling system based on natural convection can be disturbed by unforeseen air movements.
4)
The limit value of 89 kPa covers applications at altitudes up to 1000 m.
Note
Installation instructions
The motor is not suitable for operation in the following environmental conditions:
•
In salt-laden or aggressive atmospheres
•
Outdoors
•
In a vacuum
•
In hazardous areas with a danger of explosion
You will find additional data on the environmental conditions, such as for transport and
storage of the motor, in Chapter "Preparing for use (Page 43)".
