Siemens SINAMICS S120 Manual page 64

Electrical installation
4.4 Connections
Figure 4-1
Establishing the connection
1. Loosen the 1 x M12 nut of the PE busbar on the 1st cabinet.
2. Remove the nut, washer (1), and screw (3).
3. Loosen the 1 x M12 nut of the PE busbar on the 2nd cabinet.
4. Remove the nut, washer, and screw.
5. Place the connection jumper (2) at the back on the PE busbar of the cabinet units to be
6. Insert the screws in the ground straps of the PE busbar from the front.
7. Reattach the washers and nuts.
8. Tighten the nuts (tightening torque: 50 Nm).
64
Connecting the PE busbar when cabinet units are installed side-by-side
connected.
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A