Siemens SIMOTICS T-1FW68, Configuration Manual

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Description of the motor
2.3 Technical features and ambient conditions
1FW68 radial segment motors
38
Configuration Manual, 08/2021, A5E51132930B AA
Table 2- 2 Ambient conditions are based on climate class 3K3
Ambient parameter Unit Value
a) Low air temperature ° C - 5
b) High air temperature ° C + 40
c) Low relative humidity % 5
d) High relative humidity % 85
e) Low absolute humidity g/m 3 1
f) High absolute humidity g/m 3 25
g) Rate of temperature change
1)
° C/min 0.5
h) Low air pressure
4)
kPa 78.4
i) High air pressure
2)
kPa 106
j) Solar radiation (insolation) 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 78.4 KPa covers altitudes up to 2000 m.
Additional ambient conditions applicable for the motors for stationary use at weather-
protected locations according to standard IEC 60721-3-3 include.
Mechanically active ambient conditions Class 3S1
Mechanical ambient conditions Class 3M3
Note
Installation instructions
The motors are not suitable for operation
• In salt-laden or corrosive atmospheres
• Outdoors
You can find additional data on the environmental conditions, such as ambient
temperatures or conditions for transport and storage of the motors, in the relevant
chapters of this documentation.