GB/Z 17625.6-2003: Electromagnetic compatibility -- Limits -- Limitation of emission of harmonic currents in low-voltage power supply systems for equipment with rated current greater than 16A

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Scope

This guidance technical document deals with the emission of disturbances due to
harmonics.
This guidance technical document is applicable to electrical and electronic equipment
with a rated input current exceeding 16 A per phase and intended to be connected to
public low-voltage a.c. distribution systems of the following types.
- nominal voltage up to 240 V, single-phase, two or three wires;
- nominal voltage up to 600 V, three-phase, three or four wires;
- nominal frequency 50 Hz.
Other distribution systems are excluded.
Tests according to this guidance technical document are type tests of complete pieces
of equipment, for example a speed variable fan, and not of components, for example
a converter.
Connection of this equipment to the supply generally requires special agreement
between the supply authority and the consumer. This consent will depend upon several
factors including the expected levels of disturbance caused by the equipment and the
actual situation at the connection point to the power supply system.
These recommendations specify the information required to enable a supply authority
to assess equipment regarding harmonic disturbance and to decide whether or not the
equipment is acceptable for connection with regard to the harmonic distortion aspect.
NOTE 1.For these types of equipment only general recommendations on assessment of
disturbances can be given. There is no guarantee that the connection of equipment complying
with these recommendations will be allowed in all cases, as the consent to connect equipment
to the supply depends on the level of disturbance caused by the equipment and the load
conditions in the network.
NOTE 2.This guidance technical document can also be applied to equipment with a lower rated

Basic Data

Standard ID	GB/Z 17625.6-2003 (GB/Z17625.6-2003)
Description (Translated English)	Electromagnetic compatibility-Limits-Limitation of emission of harmonic currents in low-voltage power supply systems for equipment with rated current greater than 16A
Sector / Industry	National Standard
Classification of Chinese Standard	L06
Classification of International Standard	33.100
Word Count Estimation	12,157
Date of Issue	2003-02-21
Date of Implementation	2003-08-01
Quoted Standard	GB/T 4365; GB 17625.1; GB/T 17625.3; GB/T 17626.7; GB/T 18039.3; GB/Z 18039.5
Adopted Standard	IEC TR 61000-3-4-1998; IDT
Summary	This standard applies to: harmonic current emissions. The technical guidance document applies to the rated input current of each phase is greater than 16A, connected to public low-voltage AC power supply with the following systems electrical and electronic equipment: Nominal voltage 240V and below, single phase, -wire or three-wire, nominal voltage of 600V and below, -phase, three-wire or four-wire, nominal frequency of 50Hz. Other grades distribution system are not included. Carried out in accordance with the technical guidance documents test is for the entire device type tests, such as