Siemens PM240-2 Hardware Installation Manual page 95

Category C3
Drive systems with a rated voltage < 1,000 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 C2
Drive systems with a rated voltage < 1,000 V, which are neither plug-in devices nor
moveable devices and which, when used in the first environment, are only intended 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 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.
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.
Power Module PM240-2
Hardware Installation Manual, 12/2015, A5E33294624B AD
7.7 Electromagnetic compatibility of the inverter
Technical data
95