Electrical connection
8.3 System integration
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
101
Current-carrying capacity for power and signal cables
The current-carrying capacity of PVC/PUR-insulated copper cables is specified for routing
types B1, B2 and C under continuous operating conditions in the table with reference to an
ambient air temperature of 40° C. For other ambient temperatures, the values must be
corrected by the factors from the "Derating factors" table.
Table 8- 1 Cable cross-section and current-carrying capacity
Current-carrying capacity rms; AC 50/60 Hz or DC for routing type
Electronics (according to EN 60204-1)
0.20 - 4.3 4.4
0.50 - 7.5 7.5
0.75 - 9 9.5
Power (according to EN 60204-1)
0.75 8.6 8.5 9.8
1.00 10.3 10.1 11.7
1.50 13.5 13.1 15.2
2.50 18.3 17.4 21
Table 8- 2 Derating factors for power and signal cables
Ambient air temperature in °C
Derating factor according to EN 60204-1 Table D1
30 1.15
35 1.08
40 1.00
45 0.91
50 0.82
55 0.71
60 0.58
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