Siemens SINAMICS V20 Operating Instructions Manual page 136

Commissioning via the built-in BOP
5.6 Function commissioning
Connection for DC coupling
The following figure illustrates the system connection using DC coupling.
See Section "Terminal description (Page 40)" for the recommended cable cross-sections
and screw tightening torques.
See the Product Information of Protective Devices for SINAMICS V20 Converter
(https://support.industry.siemens.com/cs/ww/en/ps/13208/man) for the recommended fuse
types.
Destruction of converter
It is extremely important to ensure that the polarity of the DC link connections between the
converters is correct. If the polarity of the DC terminals' connections is reversed, it could
result in the destruction of the converter.
134
WARNING
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012