Environments And Categories - Siemens SINAMICS S120 Equipment Manual

Cabinet design and EMC for components, Blocksize format
11.3 Information on electromagnetic compatibility (EMC)
Connection authorization
Note
Connection authorization
• Converter with a type rating ≤ 1 kW:
It cannot be guaranteed that the limit values are complied with corresponding to IEC
61000-3-2. The installation person/company or company operating the professionally
used device must obtain authorization from the local power utility to connect the device
regarding the harmonic currents (Page 136).
• Converter with a type rating > 1 kW and a rated input current ≤ 16 A:
These devices are not subject to any limit values, and as a consequence can be
connected to the public low-voltage grid without any prior consultation.
• Converters with a rated input current > 16 A and ≤ 75 A:
With a three-phase connection, the devices are compliant with IEC 61000-3-12, under the
assumption that the short-circuit power (fault level) SSC at the connection point of the
customers system with the public grid is greater than or equal to the value in the formula
below.
SSC ≥ 120 · √3 · U
For PM240-2 FSB and FSB, a line reactor with U
upstream.
The installation company or company operating the equipment is responsible for ensuring
that this equipment is only connected at a connection point with an appropriate short-
circuit power (fault level).
In the following cases, the installation company or company operating the device must
obtain authorization from the power utility company to connect the device regarding the
harmonic currents.
– Three-phase connection to a line supply with lower short-circuit power
– Three-phase connection of FSB or FSC without line reactor - or with line reactor
– Single-phase connection of devices with a rated input current > 16 A
• Converter with a rated input current > 75A:
There are no standard-related requirements for installing devices such as these.
However, it is recommended to inform the power utility company when connecting such a
device.
11.3.2

Environments and categories

EMC environments and EMC categories are defined as follows in the EMC product standard
EN 61800-3:
Environments
IEC/EN 61800-3 makes a distinction between the first and second environments - and
defines different requirements for these environments.
368
· IN
in
U < 4 %
k
= 4 % must also be connected
k
Manual, 06/2019, 6SL3097-5AL00-0BP1
AC Drive