Siemens SINAMICS Series Operating Instructions Manual page 96

Connecting
6.1 Instructions for EMC-compliant drive installation
Depending on the installation site and the drive power, four different categories are defined
in EN 61800-3 with regard to the limit values for interference emission and two (operating)
environments with regard to the requirements on interference immunity:
Category C1:
Category C2:
Category C3:
Category C4:
The figure below shows how the four categories are assigned to the first and second
environments:
Figure 6-2
SINAMICS DC MASTER devices are nearly always used in the second environment
(categories C3 and C4).
RFI suppression filters and line reactors are required whenever they are to be used in
Category C2.
The SINAMICS DC MASTER conform to the interference immunity requirements defined in
EN 61800-3 for the second environment, and thus also with the lower interference immunity
requirements for the first environment.
SINAMICS DC MASTER: Industrial applications
Industrial applications demand that devices demonstrate an extremely high level of
interference immunity, but by contrast place very low requirements on them in terms of
interference emission levels.
SINAMICS DC MASTER converters are components of an electrical drive, such as
contactors and switches. Qualified personnel must install them into a drive system which, as
an absolute minimum, consists of the converter, motor cables, and motor. Line reactors and
fuses are also required in most cases. Therefore, whether or not a limit value is adhered to is
determined by the components being installed correctly. In order to limit the interference
emission in compliance with the limit value for category C2 according to EN 61800-3, RFI
suppression filters are required in the mains supply conductors for the armature and field
power units and the line reactors. Without RFI suppression filters, the interference emission
of SINAMICS DC MASTER converters exceeds the limit value for category C2.
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Drive systems for rated voltages < 1000 V for unrestricted use in the first
environment.
Stationary drive systems for rated voltages < 1000 V for use in the second
environment. Use in the first environment is possible if the drive system is
distributed and installed by qualified personnel. The warning information
and installation instructions supplied by the manufacturer must be observed.
Drive systems for rated voltages < 1000 V for exclusive use in the second
environment
Drive systems for rated voltages ≥ 1000 V or for rated currents ≥ 400 A for
use in complex systems in the second environment
Definition of categories C1 to C4
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A