Siemens SINAMICS S110 Manual page 45

Categories
Category C1
Drive systems with a rated voltage < 1000 V, which are intended for use in the first
environment.
Drive systems which correspond to category C1 can be installed in the first environment
without restrictions.
Category C2
Drive systems with a rated voltage < 1000 V, which are neither plug-in devices nor moveable
devices and which, when used in the first environment, are intended only to be installed and
commissioned by an expert.
Drive systems which correspond to category C2 may only be used in the first environment if
they are installed by an expert, with limit values for electromagnetic compatibility observed.
Category C3
Drive systems with a rated voltage < 1000 V, which are intended for use in the second
environment and not for use in the first environment.
Drive systems which correspond to category C3 may only be installed in the second
environment.
Category C4
Drive systems with a rated voltage ≥ 1000 V with an output current ≥ 400 A or for use in
complex systems in the second environment
Drive systems which correspond to category C4 may only be installed in the second
environment.
Note
Expert
An expert is a person or organization with the necessary experience for installing and/or
commissioning drive systems (Power Drive Systems - PDS), including the associated EMC
aspects.
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
Mains connection and line-side power components
3.7 Line filter
45