Pe Busbar; General Information; Connection For Side-By-Side Installation Of Cabinet Units - Siemens SINAMICS S120 Manual

4.4.2

PE busbar

4.4.2.1

General information

Availability
PE busbars are included in the following S120 Cabinet Modules:
● Line Connection Modules
● Basic Line Modules
● Smart Line Modules
● Active Line Modules
● Booksize Base Cabinets
● Chassis format Motor Modules
● Central Braking Modules
● Auxiliary Power Supply Modules
Description
Each Cabinet Module contains a PE busbar for grounding the components installed in the
cabinet. For all cabinet units, the busbar is a 60 x 10 mm nickel-plated bar. It is located at the
bottom of the cabinet and is secured on the left and right to the ground straps in the cabinet.
Note
When connecting the ground connections to the PE busbar, make sure that the cabinet
doors will still close. Additional wiring in the cabinets is not required.
4.4.2.2

Connection for side-by-side installation of cabinet units

A connection jumper for the PE busbar is supplied with every cabinet.
Preparatory steps
● Install and secure the cabinet units properly.
● Disconnect the cabinet units from the power supply.
● Allow unimpeded access to the PE busbar of the cabinet units (if necessary, remove the
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A
protective covers during installation work).
Electrical installation
4.4 Connections
63