Siemens SINAMICS S120 Combi - Current-Carrying Capacity and Derating Factors for Power Cables and Signal Cables

Cabinet design and EMC
13.7 Connection system
SINAMICS S120 Combi
252 Manual, Edition 07/2012, 6SL3097-4AV00-0BP3
13.7.3 Current-carrying capacity and derating factors for power cables 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 listed in the "Derating factors for deviating conditions" table.
Table 13- 10 Current-carrying capacity according to EN 60204-1 for 40°C ambient temperature
Cross section Current-carrying capacity, effective; AC 50/60 Hz or DC
for routing type
mm
2
B1
A
B2
A
C
A
Electronics
0.20 – 4.3 4.4
0.50 – 7.5 7.5
0.75 – 9 9.5
Power
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
4 24 23 28
6 31 30 36
10 44 40 50
16 59 54 66
Installation types
B1 cables in conduits or installation ducts
B2 multi-core cables in conduits or installation ducts
C cables along walls/panels without conduits and installation ducts
Table 13- 11 Derating factors for deviating conditions
Ambient temperature [°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