Siemens SINAMICS S120 Manual page 119

Table 6- 8
Ambient air temperature [° C]
30
35
40
45
50
55
60
Overheating of the motor cables when the permissible conductor cross-sections are fallen
below
Excessively thin motor cables can result in overheating. This can result in severe injury or
death due to fire and smoke.
• Use cables that correspond to the Motor Module currents. Take into account the routing
• If the rated motor current is less than the rated Motor Module output current, then you
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0
Derating factors for deviating ambient temperatures
WARNING
type, ambient temperature and cable length.
can select appropriately smaller cross-sections.
6.7 Connection system
Derating factor according to EN 60204-1, Table
D1
1.15
1.08
1.00
0.91
0.82
0.71
0.58
Cabinet design
117