Connection Overview - Siemens SINAMICS S120 Equipment Manual

Table 4- 4
Busbar
1
2
3
4
5
6
The maximum load-carrying capacity of the auxiliary voltage busbar system is 100 A
according to IEC (or 80 A according to UL).
When establishing connections to the auxiliary voltage busbar system, you must ensure
that you do not mix up the power supplies. Errors or carelessness can result in serious
injury or damage to the components or system.
4.5.3.2

Connection overview

The following connections must be established for the auxiliary voltage busbar system:
● Connection of auxiliaryvoltage busbars when cabinet units are installed side-by-side
● Connecting to the infeed
● Connection by means of a Faston plug to pick off the available voltage
Preparatory steps for all work carried out on the auxiliary voltage busbar system
● Install and secure the cabinet units properly.
● Disconnect the cabinet units from the power supply.
● Disconnect the auxiliary voltage busbar system from the power supply.
● Allow unimpeded access to the auxiliary voltage busbar system of the cabinet units
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
Assignment of the auxiliary voltage busbar system
Designation
L1
L2
L1
N
P24
M
DANGER
(if necessary, remove the protective covers).
Voltage
Line voltage (for fan supply via transformer):
380 to 480 V 2 AC or
•
500 to 690 V 2 AC
•
230 V 1 AC
24 V DC for electronics power supply
Electrical installation
4.5 Connections
65