Siemens SINAMICS DCM Operating Instructions Manual page 60

Connecting
6.1 Instructions for EMC-compliant drive installation
Four different categories are defined in EN 61800-3 Ed.2 depending on the installation site
and the power of the drive:
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.
SINAMICS DC MASTER devices conform to the interference immunity requirements defined
in EN 61800-3 for the second environment, and thus also with the lower interference
immunity requirements in 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. Limiting interference emission levels
in line with limit value "A1" according to EN 55011 requires not only the converter unit itself,
but also the RFI suppression filter allocated to it and the line reactor, at the very least.
Without a radio interference suppression filter, the interference emission level of SINAMICS
DC MASTER converter units exceeds limit value "A1" of EN 55011.
If the drive forms part of a system, it does not initially need to fulfill any interference emission
requirements, but the EMC Directive does require the system as a whole to be
electromagnetically compatible with its environment.
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Drive systems for rated voltages < 1000 V for unlimited 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 Control Module
Operating Instructions, 12/2018, A5E34888669A