Cabinet design and EMC
12.7 Connection system
306
SINAMICS S120 Combi
Manual, (GH9), 07/2016, 6SL3097-4AV00-0BP5
Example for dimensioning a power cable
Boundary conditions
:
Module: S120 Combi 4 axes Power Module with 20 kW infeed
Rated input current at 400 V
AC
: 34 A (from the technical data)
Ambient temperature: 45 °C
Installation type: B2
:
With installation type B2 and a rated input current of 34 A
AC
, from the table showing the
current-carrying capacity, a cable cross-section of 10 mm
2
is obtained.
With a derating factor of 0.91 for 45°C ambient temperature, the current-carrying capacity of
the selected power cable decreases to 36.4 A.
:
Under the given boundary conditions, a power cable with a cross-section of 10 mm
2
can be
used.
Connectable conductor cross-sections for spring-loaded terminals
Table 12- 12 Spring-loaded terminals
Type: Spring-loaded terminal
1 Connectable conductor cross-
Flexible 0.08 … 2.5 mm
2
Stripped length 8 … 9 mm
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