Consider the following properties during the configuration:
● Short-circuit voltage u
k
≥ 8% (in relation to 10 MVA)
● Transformer taps for voltage adjustments:
2 x 2.5% or +/- 5% if a sine-wave filter is used. The winding transformer taps are normally
located on the primary side of the transformer.
● The voltages and insulation for the secondary-side windings must be dimensioned as
shown in the following table:
Connection Single connection Parallel connection of Basic Line Module
and Motor Module on same DC bus
Circuit version Basic connection, 12-
pulse infeed
Series connection of
Basic Line Modules
(option N15)
Power increase using a parallel connec‐
tion; basic connection with sine-wave filter
Infeed transformers 1 three-winding trans‐
former
2 three-winding trans‐
formers
2 three-winding or
1 five-winding transformer
Recommended vector group Dy5 Dd0 Dy5 Dd0
with primary shift +
7.5°
Dy5 Dd0
with primary shift - 7.5°
Dy5 Dd0
with primary shift + 7.5°
Dy5 Dd0
with primary shift - 7.5°
Drive output voltage
[kV]
Test voltage
[kV]
1)
Transformer secondary voltage
(no-load voltage)
[kV]
Single connection, 12-pulse Parallel connection of Basic Line Module and
Motor Module on same DC bus
2.3 23.6 2 x 1.2
2) -
3.3 33.6 2 x 1.7
2)
2 x 1.7 (2x)
3)
4.16 38.9 2 x 2.2
2)
2 x 2.2 (2x)
3)
1)
The specified voltages and the necessary impulse withstand/test voltages for the transformer
secondary windings with respect to ground. Since the transformers generally have temperature
evaluation systems in the windings, the specified test voltages are required for strengthened
insulation. If no control circuits have been installed in the windings, test voltages in accordance
with the basic insulation are sufficient.
2)
Basic connection
3)
Parallel connection to increase the power rating
3.5.9 Actual value acquisition
Actual current and voltage values are recorded by the AVT combination module ①. The AVT
combination module converts analog signals into digital signals and forwards them to the PSA.
The signals are transferred to the PSA via fiber-optic cables.
Description
3.5 Description of the components
SINAMICS GM150 6SL3810-2LN31-8AA2
38 Operating Instructions Rev.201910281332 EXAMPLE
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