Establishing The Dc Link Connections - Siemens SINAMICS G150 Operating Instructions Manual

4.7.2

Establishing the DC link connections

Connecting the DC link connections
The DC link connection of the two sub-cabinets must be made using preassembled cables;
these must be connected from the right-hand sub-cabinet (+H.A25/50) to the left-hand sub-
cabinet (+H.A49).
The following connecting cables must be connected:
● Cable number -W001:
● Cable number -W002:
Brackets to connect connecting cables are provided at the DCPS and DCNS connections in
sub-cabinet +H.A49. The cables must be connected at the top of the brackets. When routing
cables it must be ensured that sufficient voltage clearances are always maintained.
Under no circumstances may the connections be interchanged or short-circuited!
The cabinet unit will be destroyed if the DC link connections are either interchanged or
short-circuited!
Ensure that the DCPS / DCNS connections in the right-hand sub-cabinet are correctly
connected with the DCPS / DCNS connections in the left-hand sub-cabinet.
CAUTION
The DC link connections between the two sub-cabinets must be routed so that short-circuits
and ground faults can be completely ruled out in accordance with IEC 61800-5-2:2007,
Table D.1.
The cables must be routed so that it is impossible for the cable insulation to be
mechanically damaged. This is supported by the fact that the connecting cables have
double installation.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
Connection from the DCPS connection at Power Module -T1 in sub-cabinet +H.A25/50 to
the DCPS connection at the Power Module -T1 in sub-cabinet +H.A49.
Connection from the DCNS connection at Power Module -T1 in sub-cabinet +H.A25/50 to
the DCNS connection at the Power Module -T1 in sub-cabinet +H.A49.
DANGER
4.7 Electrical connection of units that are connected in parallel
Electrical installation
77