8 Additional information
BU 0200 en-US-4920
251
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8.3.2 EMC evaluation
Two standards must be observed when evaluating electromagnetic compatibility.
1. EN 55011-1 (environmental standard)
The limits are defined in dependence on the basic environment in which the product is operated in
this standard. A distinction is made between 2 environments, whereby the
1st environment
describes the non-industrial
living and business area
without its own high-voltage or medium-
voltage distribution transformers. The
2nd environment
, on the other hand, defines
industrial
areas
which are not connected to the public low-voltage network, but have their own high-voltage
or medium-voltage distribution transformers. The limits are subdivided into
classes A1, A2 and B
.
2. EN 61800-3 (product standard)
The limits are defined in dependence on the usage area of the product in this standard. The limits
are subdivided into into
categories C1, C2, C3 and C4
, whereby class C4 basically only applies to
drive systems with higher voltage (≥ 1000 V AC), or higher currents (≥ 400 A). However, class C4
can also apply to the individual device if it is incorporated in complex systems.
The same limits apply to both standards: However, the standards differ with regard to an application
that is extended in the product standard. The user decides which of the two standards applies,
whereby the environmental standard applies in the event of a typical fault remedy.
The main connection between the two standards is explained as follows:
Category as per EN 61800-3
C1
C2
C3
Limit class in accordance with EN 55011
B
A1
A2
Operation permissible in
1. Environment (living environment)
X
X
1)
-
2. Environment (industrial environment)
X
X
1)
X
1)
Note required in accordance with EN-61800-3
-
2)
3)
Sales channel
Generally available Limited availability
EMC situation
No requirements
Installation and start-up by EMC expert
1)
Device used neither as a plug-in device nor in moving equipment
2)
"The drive system can cause high-frequency interference in a living environment that may make interference suppression measures
necessary".
3)
"The drive system is not intended for use in a public low-voltage network that feeds residential areas".
Table 15: EMC comparison between EN 61800-3 and EN 55011
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