7
05.01
7.2 Voltage matching
7-203
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) -- 05/2008 Edition
7.2.4 Transformers
For the assignment of transformers (auto/isolating transformers) with supply
voltages of 3--ph. 220 V AC to 3--ph. 575 V AC to the NE modules, refer to Sec-
tions 7.3.2 to 7.3.4.
PE
NE module
Line supply
connection/
transformer for
the plant
S
K
plant = S
K
line
Additional loads/
machines
V1U1 W1
S
K
line
Commutating
reactor
S
K
transformer
Matching trans-
former for the
machine
PE
NE module
V1U1 W1
Commutating
reactor
≁ ≁
Line filter Line filter
For isolating transformer:
Ground the star point!
Fig. 7-5 Connection schematic, matching transformer
Suggestion: Dyn0 or Yyn0; this means either a delta or star circuit on the pri-
mary side and star circuit on the secondary side where the neutral point is
brought--out. For the connection, refer to Section 7.2.2.
Note
Switching elements (main switch, contactors) for connecting and disconnecting
the line filter must feature a max. 35 ms delay time between closing and
opening individual main contacts.
Vector group
7L
ne Su
l
Connec
on11.0502.07
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