2 System Configuration
2
05.01
2.8 Line supply connection
2-46
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
2.8 Line supply connection
2.8.1 HF commutating reactor
The matching HF commutating reactor is required, in accordance with the se-
lection table (refer to NC60, Section 9) when connecting the uncontrolled 28 kW
infeed modules and the controlled infeed regenerative/feedback modules to the
line supply.
The HF commutating reactor should be mounted as close as possible to the line
supply infeed module.
Commutating reactors have the following tasks:
S Limit the harmonics fed back into the line supply.
S Store the energy for DC link controlled operation in conjunction with the in-
feed and regenerative feedback module.
HF commutating reactors for line supplies 3–ph. 400 V AC –10% up to 480 V
+6%;
50 Hz / 60 Hz $10%
2.8.2 Line filter
The line filters are assigned to the line supply infeed modules and limit the
cable–borne noise emitted by the drive system. The line filter should also be
mounted, together with the HF commutating reactor, close to the line supply
infeed module, whereby the filter must always be located on the line side.
These cables must be shielded as they have high noise levels. We always
recommend that the line filter products listed in Section 7 are used.
2.8.3 Line filter packages
The line filter and the HF commutating reactors are combined as logical unit in
the form of line filter packages. In order to adapt the line filter packages to the
mounting surface and to the mounting points of earlier filter modules, adapter
sets are available. The filter package protrudes between 20 mm and 30 mm
beyond the front plane of the drive group.
2.8.4 Line supply connection for voltage adaptation
The SIMODRIVE 611 drive converter system is dimensioned for direct operation
from TN line supplies with 3–ph. 400 V AC, 3–ph. 415 V AC and 3–ph. 480 V
AC. Matching transformers, tailored to the system, are available to adapt the
system to other line supply types, e.g. operation from IT or TT line supplies.
This wide range covers the line supply voltages normally found in industrial re-
gions worldwide.
TN line supplies distinguish themselves by a low–ohmic electrical path between
the reference ground potential of the current source and the protective conduc-
tor potential of the electrical equipment. If this arrangement is not available, then
the connection conditions must be simulated using a transformer with separate
windings whose secondary neutral point is grounded at the protective conductor
potential and is connected with the drive converter protective conductor.
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