This part of IEC 61800 specifies electromagnetic compatibility (EMC) requirements for power
drive systems (PDSs, defined in 3.1). These are adjustable speed AC or DC motor drives.
Requirements are stated for PDSs with converter input and/or output voltages (line-to-line
voltage), up to 35 kV AC RMS.
PDSs covered by this document are those installed in residential, commercial and industrial
locations with the exception of traction applications, and electric vehicles. PDSs can be
connected to either industrial or public power distribution networks. Industrial networks are
supplied by a dedicated distribution transformer, which is usually adjacent to or inside the
industrial location, and supplies only industrial customers. Industrial networks can also be
supplied by their own electric generating equipment. On the other hand, PDSs can be directly
connected to low-voltage public mains networks which also supply residential premises, and
in which the neutral is generally earthed (grounded).
The scope of this part of IEC 61800, related to EMC, includes a broad range of PDSs from a
few hundred watts to hundreds of megawatts. PDSs are often included in a larger system. The
system aspect is not covered by this document but guidance is provided in the informative
annexes.
The requirements have been selected so as to ensure EMC for PDSs at residential,
commercial and industrial locations. The requirements cannot, however, cover extreme cases
which can occur with an extremely low probability. Changes in the EMC behaviour of a PDS,
as a result of fault conditions, are not taken into account.
The object of this document is to define the limits and test methods for a PDS according to its
intended use. This document includes immunity requirements and requirements for electromagnetic
emissions.
This document defines the minimum EMC requirements for a PDS.
Immunity requirements are given according to the environment classification. Low-frequency
emission requirements are given according to the nature of the supply network. Highfrequency
emission requirements are given according to four categories of intended use,
which cover both environment and bringing into operation.
As a product standard, this document can be used for the assessment of PDS. It can also be
used for the assessment of complete drive modules (CDM) or basic drive modules (BDM)
(see 3.1), which can be marketed separately.
This document contains
• conformity assessment requirements for products to be placed on the market, and
• recommended engineering practice (see 6.5) for cases where high frequency emissions
cannot be measured before the equipment is placed on the market (such PDSs are
defined in 3.2.7 as category C4).