Siemens SINAMICS S120 Equipment Manual page 371

First environment
Residential buildings or locations at which the drive system is directly connected to a public
low-voltage supply without intermediate transformer.
Second environment
All locations outside residential areas. These are basically industrial areas that have their
own medium-voltage supply via their own transformers.
Categories
IEC/EN 61800-3 makes a distinction between four drive system categories:
Category C1
Drive systems for rated voltages < 1000 V for unrestricted use in the first environment.
Category C2
Stationary drive systems for rated voltages < 1000 V for operation in the second
environment.
Note
Disturbance of radio communication services due to radio-frequency interferences in
residential environments
In a residential environment, this product can cause radio-frequency interferences, which
may make interference suppression measures necessary.
• Have qualified personnel carry out the installation and commissioning with suitable
interference suppression measures.
Category C3
Drive systems for rated voltages < 1000 V - only for operation in the second environment.
Note
Disturbance of radio communication services due to radio-frequency interferences in
residential environments
In a residential environment, this product can cause radio-frequency interferences.
• Do not use this device in the first environment (residential area).
Category C4
Drive systems for IT line supplies for operation in complex systems in the second
environment. An EMC plan must be drawn up.
SINAMICS S120 units are designed for use in the second environment.
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
Cabinet design and EMC for components, Blocksize format
11.3 Information on electromagnetic compatibility (EMC)
369