Siemens SINAMICS S120 Manual page 128

Cabinet design
6.10 Protective connection and equipotential bonding
①
②
③
④
Figure 6-5
126
The protective conductor (PE) must be dimensioned in accordance with the local installation
rules for equipment with increased leakage currents. As a minimum, one of the following condi-
tions must be satisfied:
The protective conductor is routed so that along its complete length it is protected against
•
mechanical damage.
The protective conductor has a cross-section ≥ 10 mm
•
A second protective conductor with the same cross-section is provided.
•
When establishing the connection using an industrial plug connector according to EN
•
60309, the protective conductor of a multi-conductor cable must have a cross-section
≥ 2.5 mm Cu.
2
As a conductor of a multi-conductor cable, the protective conductor has a cross-section ≥
•
2.5 mm Cu.
2
The cable cross-section must be dimensioned in compliance with local installation rules.
The cable cross-sections must be dimensioned in compliance with local installation rules.
Additional details are provided in the following document "Dimensioning the protective conduc-
tor for SINAMICS S120 Booksize
(https://support.industry.siemens.com/cs/ww/en/view/109738572)".
Same cross-section as the line conductor of the motor cable.
Protective connection concept, SINAMICS S120 booksize
Cu.
2
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0