Siemens SINAMICS S120 Equipment Manual page 542

Booksize power units

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Cabinet Design and EMC Booksize

The distance between the blow-out aperture of the air conditioner and the electronic

equipment must be at least 200 mm.

If the components are installed in a sealed cabinet, an internal air cooling system must be

installed to circulate the air and prevent hot spots. It is best to install the fan above the

components to optimize the air flow (suction).

Examples of cabinet ventilation

Booksize power units

Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6