7
05.01
7.2 Voltage matching
7-210
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 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
V1
U1
W1
S
K
line
Commutating
reactor
S
K
transformer
Matching trans-
former for the
machine
PE
NE module
V1
U1
W1
Commutating
reactor
Line filter
Line filter
For isolating transformer:
Ground the star point!
Fig. 7-6
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
7 Line Supply Connection
11.05
02.07