Siemens SINAMICS GM150 - 5.7 Connecting the DC Bus; Figure 5-3 Grounding Bar; Preparation

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 ① of the grounding bar at the first cabinet. Remove the nut, the washer
and the connection jumper ②.
① M12 screw
② Connection jumper
Figure 5-3 Grounding bar
2. Release the nut of the grounding bar on the second cabinet. Remove the nut and the
washer.
3. Place the connection jumper ② on the grounding bars in the cabinets to be connected.
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.
Installation
5.7 Connecting the DC bus
SINAMICS GM150 6SL3810-2LN31-8AA2
Operating Instructions Rev.201910281332 EXAMPLE 75