4.12.2 Cable requirements for UL applications
Description
For UL applications, the cables must comply with additional requirements:
• For UL applications, only copper cables with a minimum thermal stability may be used:
– Smart Line Modules: 75°C
– Motor Modules 3 - 60 A: 60/75°C
– Motor Modules 85 - 200 A: 75°C
• Copper cables with a higher thermal stability can also be used.
• To calculate cable cross-sections, 60/75 °C or 75 °C copper cables must be used.
• The current carrying capacity of the cable must be at least 125 % of the rated current of the
component.
4.12.3 Continuous current-carrying capacity for power and signal cables
Technical data
The continuous current-carrying capacity of PVC/PUR-insulated copper cables is specied for
routing types B1, B2and C under conditions for continuous operating according to
IEC 60364-5-52 in the following tables. The values are applicable for an ambient air temperature
of 40°C.
Table 4-8 Continuous current-carrying capacity for signal cables according to EN60204-1 for 40°C
ambient temperature
Type of
routing
Description
B1 Cables in conduits or cable ducts
B2 Multi-conductor cables in conduits or cable ducts
C Cables routed along walls, without protective tubes and cable ducts
Table 4-9 Continuous current-carrying capacity for signal cables according to EN60204-1 for 40°C
ambient temperature
Cable cross-section for sig‐
nal cables [mm
2
]
Continuous current-carrying capacity rms [A], AC 50/60 Hz or DC, for
routing type
B1 B2 C
0.20 – 4.3 4.4
0.50 – 7.5 7.5
0.75 – 9.0 9.5
Application planning
4.12Continuous current-carrying capacity and factors to reduce the current for power and signal cables
Booksize power units
58 Equipment Manual, 09/2023, A5E53307519B AA
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