Adjusting The Fan Voltage (-T1-T10/-T20 And -T2-T10) - Siemens SINAMICS G150 Operating Instructions Manual

Note
Information on the phase sequence
If an incorrect phase sequence was connected when the motor was connected, p1821
(phase sequence direction reversal) can be used to correct the incorrect phase sequence
without physically changing it over (see "Functions, monitoring and protective
functions/direction reversal").
The correct phase sequence must be observed in both sub-cabinets when connecting
cabinet units in parallel, since it is not possible to use converter functions to correct different
connection sequences in the two sub-cabinets at a later stage.
With motors that can be star-connected or delta-connected, it must be ensured that the
windings are interconnected consistent with the operating voltage indicated on the rating
plate or in the motor documentation. Make sure that the winding insulation of the connected
motor has sufficient insulation strength to meet the requirements for converter operation.
4.7.6

Adjusting the fan voltage (-T1-T10/-T20 and -T2-T10)

The power supply for the device fans (230 V 1 AC) in the Basic Line Modules (-T2-T10) and
in the Motor Modules (-T1-T10 and -T1-T20) is taken from the main supply system using
three transformers.
The particular mounting positions of the transformers are indicated in the layout diagrams
supplied.
The transformers are fitted with primary taps so that they can be fine-tuned to the line
voltage.
If necessary, the connection on the transformers fitted in the factory, shown with a dashed
line, must be reconnected to match the actual line voltage.
Note
Modules with two transformers
Two transformers (-T1, -T10, and -T1-T20) are installed in the Motor Modules. The two
primary terminals on these devices must be set together.
Figure 4-11
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
Setting terminals for the fan transformer (500 to 690 V 3 AC)
Electrical installation
4.7 Power connections
87