Siemens SINAMICS G130 Engineering Manual page 432

SINAMICS S120 Cabinet Modules
Engineering Information
mounted in any specific sequence. If you wish the Booksize units to be installed in the Base Cabinets in a particular
sequence, please notify your Siemens contact.
Booksize Base Cabinets are designed to function without a cabinet fan. Cabinets with degrees of protection higher
than IP21 are equipped with thermostat-controlled fans. The fan power is supplied by the auxiliary voltage supply
system of the cabinet.
Please note the overload definitions and derating factors for units in booksize format which differ to those for power
units in Chassis format. Further information can be found in Catalog PM21 / "SINAMICS S120 drive system".
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