Second environment (industrial systems)
An environment that includes all other establishments that are not connected directly to a public
low-voltage line supply.
Examples: industrial and technical areas of buildings fed from a dedicated transformer.
Categories
Category C1
Drive systems with a rated voltage < 1000 V that are intended for unrestricted use in the first
environment.
Category C2
Drive systems with a rated voltage < 1000 V for operation in the second environment.
WARNING
Use in a residential environment
In a residential environment, the drive may cause radio interference. In such cases,
supplementary interference suppression measures may be required.
• Have the installation and commissioning performed with appropriate radio interference
suppression measures by experts.
Category C3
Drive systems with a rated voltage < 1000 V that are solely intended for use in the second
environment.
WARNING
Use in a residential environment
The device is not intended for use in a residential environment, and cannot ensure appropriate
protection of radio reception in environments such as these.
• Do not use this device in the first environment (residential area).
Category C4
Drive systems for IT line supplies with a rated voltage >1000 V for operation in complex systems
in the second environment. An EMC plan must be drawn up.
8.3.4
Drive system applications
SINAMICS S220 components may only be used in the second environment. They are to be used
on a professional basis in trade, business and industry and are not sold to the general public.
Control cabinet design and EMC booksize
8.3 Electromagnetic compatibility
Booksize power units
112
Equipment Manual, 01/2022, 6SL3097-6AC30-0BP0