5.7 Connecting The Dc Bus; Preparation; Figure 5-3 Grounding Bar - Siemens SINAMICS GM150 Operating Instructions & Installation Instructions

If several cabinets are set up as one unit, the grounding bars of the individual cabinets must be
connected with each other. A connection jumper is supplied with each cabinet. To connect the
ground bars for several cabinets, proceed as follows:
1. Release the screw
2. Release the nut of the grounding bar on the second cabinet. Remove the nut and the
3. Place the connection jumper
4. Refit the washer and nut.
5. Tighten the nut (torque: 50 Nm).
See also
Torques (Page 187)
5.7 Connecting the DC bus
5.7.1

Preparation

If several cabinets are lined-up to create a group, you must connect the DC bus of the individual
cabinets to one another.
Preparing the contact surfaces of the DC bus
1. Clean the contact surfaces with a clean cloth soaked in ethanol.
SINAMICS GM150 6SL3810-2LN31-8AA2
Operating Instructions Rev.201910281332 EXAMPLE
①
and the connection jumper
①
M12 screw
②
Connection jumper
Figure 5-3 Grounding bar
washer.
of the grounding bar at the first cabinet. Remove the nut, the washer
②
.
②
on the grounding bars in the cabinets to be connected.
Installation

5.7 Connecting the DC bus

75