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4.7.3
EMC environments in residential and industrial areas
Description
IEC 61800-3 defines EMC requirements for using variable-speed drives in the following 2
environments:
• 1st environment: Residential environment
The residential environment includes residential buildings or locations where the drive is
directly connected to the public low-voltage grid without using an intermediate transformer.
Equipment and systems that are operated on the public low-voltage grid must comply with
defined limit values for interference immunity and interference emission. The limit values are
specified in the applicable standards. Especially for interference emissions, increased
requirements apply regarding the 2nd environment.
• 2nd environment: Industrial Environment
An industrial environment includes all other installations that are not directly connected to
the low-voltage supply for residential buildings. The 2nd environment essentially
encompasses industrial areas that are supplied from the medium voltage grid via their own
transformers.
4.7.4
EMC category
Description
Together with the associated motors and encoders, including the connecting cables, the
converter forms a variable-speed drive. Product standard IEC 61800‑3 defines the EMC
requirements for a variable-speed drive. Product standard IEC 61800‑3 calls a variable-speed
drive a "Power Drive System" (PDS).
IEC 61800-3 defines categories for electromagnetic compatibility in the 1st environment and
the 2nd environment.
Table 4-3
Environment
Category
Voltage, current
Line system config‐
uration
Installation, com‐
missioning
Precondition: Plant manufacturers and operating companies agree on plant-specific measures in an
1)
appropriate EMC plan. If specified in the product documentation, the drive can also be operated on
ungrounded line supplies (IT line systems) in accordance with product standard IEC 61800‑3.
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB
Environments and categories according to IEC 61800-3
1st environment
C1
No requirement
4.7 Electromagnetic compatibility (EMC)
C2
C3
< 1 000 V
TN, TT
By professional personnel
Application planning
2nd environment
C4
1)
≥ 1 000 V
or
≥ 400 A
TN, TT, IT
89
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