Siemens SINAMICS G150 Operating Instructions Manual page 76

Electrical installation
4.6 Electrical connection
Connecting to the central ground of the overall system
Danger to life when live parts are touched and there is no grounding
If there is no connection to the central grounding of the complete plant, the cabinet unit may
be at a dangerous voltage level in a fault situation. This means that when touched, this can
result in death or severe injury
• After you have established the connection to the PE busbar in the cabinet and/or
Connecting external cables to the PE busbar
Note
Close the cabinet doors
When laying cables that are to be connected to the PE busbar from outside the cabinet,
make sure that the cabinet doors close properly.
Establishing the connection
1. Insert the screw from the front.
2. Attach the cable lug from behind.
3. Attach the nut and, if necessary, the washers and tighten (tightening torque: 50 Nm)
76
WARNING
established the connections to the PE busbar across more than one cabinet unit, you
must also establish a connection to the central ground of the entire system.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A