Siemens SINAMICS G120P, Operating Instructions Manual

Page: 104 / 496

Electrical installation
4.9 Other connections
Inverter cabinet units
104
Operating Instructions, 12/2014, A5E32923362A
4.9.1 Auxiliary power supply, 230 VAC (option K74)
Description
The auxiliary power supply provides the auxiliary voltages required for external control
circuits of the cabinet unit on the plant side.
Adapting the auxiliary power supply (-T10)
A transformer (-T10) is installed to produce the auxiliary voltages of the cabinet unit. The
location of the transformer is indicated in the layout diagrams supplied.
When delivered, the transformer is always set to the highest level. Where necessary,
jumpers must be used to convert to the existing line voltage.
The tables below show the appropriate transformer setting for the control power supply
based on the existing line voltage.
Table 4- 34 Line voltage assignments for the internal power supply
Line voltage Jumper at the transformer position (-T10)
380 V 31 - 38
400 V 32 – 38
415 V 31 – 37
440 V 32 – 37
460 V 32 – 36
480 V 33 – 36
Once the jumpers have been set, the secondary voltage should be 230 VAC.
NOTICE
Material damage due to voltage set too high
If the terminals are not connected to the actual line voltage, this can damage the device in
the case of the voltage being set too high.
•
Connect the terminals according to the actual line voltage.