Siemens SINAMICS G130 Engineering Manual page 286

SINAMICS S120 Cabinet Modules
Engineering Information
The interfaces of the cabinet as a whole are designed to ensure that no additional auxiliary external wiring is
required. All auxiliary voltage supplies are connected to the auxiliary voltage busbar with fuse protection.
A SITOP device is used for the 24 V power supply to meet the increased power requirement of combinations of
individual Cabinet Kits. This is included as standard in every Booksize Base Cabinet and operates as the power
supply for the entire cabinet.
The 24 V auxiliary power supply within a Base Cabinet has been configured in such a way that the failure of
individual units/ Cabinet Kits does not impose any restrictions on other items of equipment. The internal auxiliary
supply busbar of the Booksize devices is not used when a SITOP device is installed.
Booksize Base Cabinets with maximum equipment
With a maximum equipment complement, 6 Cabinet Kits can be mounted in the 800 mm wide Base Cabinet, and 10
Cabinet Kits in the 1200 mm wide Base Cabinet (applies to 100 mm wide Cabinet Kits in each case). The Base
Cabinets feature defined slots which are equipped in the factory according to the order data. The ordered kits are not
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