Siemens SINAMICS S120 Equipment Manual page 513

Figure 9-5 Example of a drive line-up
The components of the drive line-up should preferably be installed on a conductive mounting
surface to ensure low impedance between the component and the mounting surface.
Mounting plates with a galvanized surface are suitable.
The components can be arranged in one or more tiers. In a multiple-tier arrangement,
vertical installation or, in a cabinet row, side-by-side installation in different cabinet sections
is possible.
To determine the cross-section, use the DC link busbar current carrying capacity given in the
relevant technical data.
A ventilation clearance of 100 mm must be maintained around the line reactor (not including
the mounting surface).
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
Cabinet Design and EMC Booksize
9.4 Arrangement of components and equipment
513