1 Scope
This part of IEC 61000
deals with the limits for harmonic (including grouped interharmonic) currents produced
by the inverter of inverter-type electrical energy-supplying equipment (ESE) as defined in 3.2, but which does not include energy storage. The limits given in this document are
applicable to inverters with a reference current as defined in 3.3 (see also 5.2.3) less than or equal to 75 A per phase, intended to be connected to public low-voltage
AC distribution systems of the following types:
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• single-phase, two or three wires; nominal voltage up to 240 V
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• three-phase, three or four wires; nominal voltage up to 690 V
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• nominal frequency of 50 Hz or 60 Hz.
This document specifies:
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a) requirements and emission limits for equipment;
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b) methods for type tests and simulations.
Tests in accordance with this document are type tests of complete pieces of equipment.
Equipment which mainly absorbs energy but which is capable of supplying energy to
the public supply as a secondary function is out of the scope of this document.
EXAMPLE
An elevator motor drive returning energy during braking.
This document provides limits and testing procedures for equipment in the range up
to harmonic order 40 (h40), i.e. 2 000 Hz or 2 400 Hz depending on line frequency.
NOTE 1 It is possible that limits for frequencies in the range from 2 kHz to 9 kHz will be
added in a future edition of this document.
NOTE 2 It is possible that limits and procedures for storage systems will be added in a future
edition of this document.