GB/Z 17625.6-2003 PDF English
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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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GB/Z 17625.6-2003: PDF in English (GBZ 17625.6-2003) GB/Z 17625.6-2003
GB
ICS 33.100
L 06
STANDARDIZATION GUIDANCE TECHNICAL DOCUMENT
OF THE PEOPLE'S REPUBLIC OF CHINA
GB/Z 17625.6-2003 / IEC TR 61000-3-4.1988
Electromagnetic compatibility - Limits - Limitation of
emission of harmonic currents in low-voltage power
supply systems for equipment with rated current
greater than 16 A
(IEC TR 61000-3-4.1988, IDT)
ISSUED ON. FEBRUARY 21, 2003
IMPLEMENTED ON. AUGUST 1, 2003
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
Table of Contents
Foreword ... 3
IEC Introduction ... 5
1 Scope ... 7
2 Normative references ... 8
3 Terms and definitions ... 9
4 General requirements ... 11
5 Connection procedures for equipment ... 12
6 Product documentation ... 14
7 Methods for type tests ... 15
Foreword
This guidance technical document identically adopts IEC Technical Report 17665-
1.2006 “Electromagnetic compatibility (EMC) - Part 3-4. Limits - Limitation of emission
of harmonic currents in low-voltage power supply systems for equipment with rated
current greater than 16 A”.
The development of this guidance technical document is to improve the
electromagnetic compatibility of China's electrical and electronic products, to maintain
a good electromagnetic environment and to improve the power quality of power supply
system.
This guidance technical document is Part 6 of “Electromagnetic compatibility - Limits”,
which includes the following parts.
GB 17625.1-2003 Electromagnetic compatibility - Limits - Limits for harmonic
current emissions (equipment input current ≤ 16 A per phase)
GB 17625.2-1999 Electromagnetic compatibility - Limits - Limitation of voltage
fluctuations and flicker in low-voltage supply systems for equipment with rated
current ≤ 16 A
GB/Z 17625.3-2000 Electromagnetic compatibility - Limits - Limitation of voltage
fluctuations and flicker in low-voltage power supply systems for equipment with
rated current greater than 16 A
GB/Z 17625.4-2000 Electromagnetic compatibility - Limits - Assessment of
emission limits for distorting loads in MV and HV power systems
GB/Z 17625.5-2000 Electromagnetic compatibility - Limits - Assessment of
emission limits for fluctuating loads in MV and HV power systems
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 16 A
The definition “3.1 total harmonic distortion (THD)” of this guidance technical document
is chosen according to GB/T 18039.3 (IEC 61000-2-2) and GB/Z 18039.5 (IEC 61000-
2-1).
This guidance technical document is for reference only. The suggestions and opinions
on this guidance technical documents shall be reported to the administrative
department for standardization of the State Council.
This guidance technical document was proposed by Electricity Department of State
Electromagnetic compatibility - Limits - Limitation of emission
of harmonic currents in low-voltage power supply systems for
equipment with rated current greater than 16 A
1 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
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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