Siemens SINAMICS G120P Hardware Installation Manual page 82

Appendix
A.2 Definition of the EMC Environment and Categories
First Environment
An environment that includes domestic premises and establishments that are connected
directly to a public low-voltage power supply network without the use of an intermediate
transformer.
Note
For example: houses, apartments, commercial premises or offices in a residential building.
Second Environment
An environment that includes industrial premises and establishments that are not connected
directly to a public low-voltage power supply network.
Note
For example: industrial and technical areas of buildings fed from a dedicated transformer.
Category C1
Power Drive System (PDS) of rated voltage less than 1000 V intended for use in the First
(Domestic) Environment.
Category C2
Power Drive System (PDS) of rated voltage less than 1000 V, which is neither a plug in
device nor a movable device, and when used in the First (Domestic) Environment, is only
intended to be installed and commissioned by a professional.
Note
A professional is a person or an organization having necessary skills in installing and/or
commissioning a Power Drive System (PDS), including their EMC aspects.
Category C3
Power Drive System (PDS) of rated voltage less than 1000 V intended for use in the Second
(Industrial) Environment and not intended for use within the First (Domestic) Environment.
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Hardware Installation Manual, 2010-07-02, A5E02923635A AB
Power Module PM230 IP55