K75, Second Auxiliary Voltage Busbar System - Siemens SINAMICS S120 Equipment Manual

8.10

K75, Second auxiliary voltage busbar system

Availability of option
This option is available for the following S120 Cabinet Modules:
● Smart Line Module
● Motor Module in chassis format
● Booksize Base Cabinet
● Central Braking Module
● Auxiliary Power Supply Module
Description
If further supply voltages are needed, in addition to the two auxiliary system voltages from
the auxiliary voltage busbar system included in the basic version, a second auxiliary voltage
busbar system can be used to supply additional auxiliary voltages to the Cabinet Modules.
Each Cabinet Module is supplied with three 2-pin connectors, thus making it easy to
interconnect individual Cabinet Modules.
CAUTION
The maximum load-carrying capacity of the auxiliary voltage busbar system and the
connection jumpers is 100 A, in accordance with IEC (80 A in accordance with UL).
The maximum load-carrying capacity of the Faston plugs and Faston sockets is 20 A. A
Faston plug can be used up to 10 times, after which it loses its contact reliability.
Note
The same rules apply for working with the additional auxiliary voltage system as for working
with the standard auxiliary voltage busbar system (see the chapter titled "Electrical
installation", "Connections for auxiliary voltage busbar system" section).
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
8.10 K75, Second auxiliary voltage busbar system
Options
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