Siemens SINAMICS S120 Combi - Connectable Conductor Cross-Sections for Spring-Loaded Terminals; Connectable Conductor Cross-Sections for Screw Terminals

Cabinet design and EMC
13.7 Connection system
SINAMICS S120 Combi
Manual, Edition 07/2012, 6SL3097-4AV00-0BP3
253
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
Calculation/dimensioning:
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.
Result:
Under the given boundary conditions, a power cable with a cross-section of 10 mm
2
can be
used.
13.7.4 Connectable conductor cross-sections for spring-loaded terminals
Table 13- 12 Spring-loaded terminals
Spring-loaded terminal type
Connectable conductor cross-
sections
Flexible 0.08 mm
2
to 2.5 mm
2
Stripped length 8 to 9 mm
1
Tool Screwdriver 0.4 x 2.0 mm
13.7.5 Connectable conductor cross-sections for screw terminals
The type of screw terminal can be taken from the interface description of the particular
module.
Table 13- 13 Screw terminals
Screw terminal type
Connectable conductor cross-
sections
Rigid, flexible
With end sleeve, without plastic sleeve
With end sleeve, with plastic sleeve
0.08 mm
2
to 1.5 mm
2
0.25 mm
2
to 1.5 mm
2
0.25 mm
2
to 0.5 mm
2
Stripped length 7 mm
Tool Screwdriver 0.4 x 2.0 mm
1
Tightening torque 0.22 to 0.25 Nm