Electrical installation
4.4 Introduction to EMC
Inverter chassis units
50 Operating Instructions, 07/2016, A5E00331449A
Product standard EN 61800–3 outlines the EMC requirements for variable-speed drive
systems. It specifies requirements for converters with operating voltages of less than 1000 V.
Different environments and categories are defined depending on where the drive system is
installed.
Figure 4-1 Definition of the first and second environments
Figure 4-2 Definition of categories C1 to C4
Table 4- 1 Definition of the first and second environments
Definition of the first and second environments
First environment Residential buildings or locations at which the drive system is connected to
a public low-voltage supply network without a transformer.
Second environment Industrial locations supplied by a medium-voltage network via a separate
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