Connection According To The System-Side Grounding Concept; Connecting External Cables To The Pe Busbar - Siemens SINAMICS S120 Manual
Cabinet modules liquid cooled
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4.5.3.3
Connection according to the system-side grounding concept
Electric shock if there is no ground connection
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
• Ground the device in compliance with the applicable regulations.
4.5.3.4
Connecting external cables to the PE busbar
Establishing the connection
1. Insert the screw from the front.
2. Attach the cable lug from the rear.
3. Attach the nut and, if necessary, the washers and tighten
(tightening torque: 50 Nm).
Note
Close the cabinet doors
When external cables that are to be connected to the PE busbar have been laid, make sure
that the cabinet doors close properly.
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
WARNING
Electrical installation
4.5 Connections
79
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