Current-Carrying Capacity And Derating Factors For Power Cables And Signal Cables - Siemens SINAMICS S120 Combi Manual

12.5.3 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 laying
methods 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 12- 9
Cross-section
mm
Electronics
0.20
0.50
0.75
Power
0.75
1.00
1.50
2.50
4
6
10
16
Laying methods
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 12- 10 Derating factors for deviating conditions
Ambient temperature [° C]
30
35
40
45
50
55
60
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
Current-carrying capacity according to EN 60204-1 for 40° C ambient temperature
Effective current-carrying capacity; AC 50/60 Hz or DC
for laying method
B1
A
2
–
–
–
8.6
10.3
13.5
18.3
24
31
44
59
B2
A
4.3
7.5
9
8.5
10.1
13.1
17.4
23
30
40
54
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 and EMC
12.5 Connection system
C
A
4.4
7.5
9.5
9.8
11.7
15.2
21
28
36
50
66
287