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GB 17799.4-2022: Electromagnetic compatibility (EMC) - Generic standards - Part 4: Emission for industrial environments
GB 17799.4-2022
GB
NATIONAL STANDARD OF THE
PEOPLE?€?S REPUBLIC OF CHINA
ICS 33.100
CCS L 06
GB 17799.4-2022 / IEC 61000-6-4:2018
Replacing GB 17799.4-2012
Electromagnetic compatibility (EMC) - Generic standards -
Part 4: Emission for industrial environments
(IEC 61000-6-4:2018, Electromagnetic compatibility (EMC) - Part 6-4:
Generic standards - Emission standard for industrial environments, IDT)
ISSUED ON: OCTOBER 12, 2022
IMPLEMENTED ON: NOVEMBER 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People?€?s Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 6
2 Normative references ... 6
3 Terms, definitions and abbreviations ... 8
4 Test conditions ... 13
5 Product documentation ... 14
6 Applicability ... 14
7 Uncertainty of measurement ... 14
8 Compliance with this document ... 15
9 Emission requirements ... 15
Annex A (Informative) Testing of DC powered systems ... 21
Annex B (Informative) Further information on measurements using a FAR ... 23
Bibliography ... 31
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020
Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents.
This document is part 4 of Electromagnetic compatibility (EMC) - Generic standards.
The following parts have been in released for Electromagnetic compatibility (EMC) -
Generic standards:
-- Immunity for residential, commercial and light-industrial environments (GB/T
17799.1);
-- Immunity for industrial environments (GB/T 17799.2);
-- Emission standard for residential, commercial and light-industrial environments
(GB 17799.3);
-- Emission for industrial environments (GB 17799.4);
-- HEMP immunity for indoor equipment (GB/T 17799.5);
-- Immunity for power station and substation environments (GB/Z 17799.6).
This document replaces GB 17799.4-2012 Electromagnetic compatibility (EMC) -
Generic standards - Emission standard for industrial environments. Compared with GB
17799.4-2012, in addition to structural adjustments and editorial changes, the main
technical changes are as follows:
a) Add the definition of different EUT test arrangements (see Clause 4);
b) Add the definition of which average detector is used for emission measurements
at frequencies above 1 GHz and that results using a peak detector are acceptable
for all measurements (see Clause 9);
c) Add requirements on DC ports (see Annex A);
d) Add radiated polarity specific emission limits within a FAR (see Annex B).
This document is identical to IEC 61000-6-4:2018 Electromagnetic compatibility
(EMC) - Part 6-4: Generic standards - Emission standard for industrial environments.
The following minimal editorial changes are made to this document:
-- Change the standard name to Electromagnetic compatibility (EMC) - Generic
standards - Part 4: Emission for industrial environments, to be consistent with
the technical standard system in China;
Electromagnetic compatibility (EMC) - Generic standards -
Part 4: Emission for industrial environments
1 Scope
This document for emission requirements applies to electrical and electronic equipment
intended for use within the environment existing at industrial (see 3.1.12) locations.
This document does not apply to equipment that fall within the scope of GB 17799.3.
The environments encompassed by this document cover both indoor and outdoor
locations.
Emission requirements in the frequency range 9 kHz to 400 GHz are covered in this
document and have been selected to provide an adequate level of protection of radio
reception in the defined electromagnetic environment. No measurement needs to be
performed at frequencies where no requirement is specified. These requirements are
considered essential to provide an adequate level of protection to radio services.
Not all disturbance phenomena have been included for testing purposes but only those
considered relevant for the equipment intended to operate within the environments
included within this document.
Requirements are specified for each port considered.
This generic EMC emission standard is to be used where no applicable product or
product-family EMC emission standard is available.
Note 1: Safety considerations are not covered by this document.
Note 2: In special cases, situations will arise where the levels specified in this document
will not offer adequate protection; for example where a sensitive receiver is
used in close proximity to an equipment. In these instances, special mitigation
measures may have to be employed.
Note 3: Disturbances generated in fault conditions of equipment are not covered by this
document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
In cases where a manufacturer?€?s specification requires external filtering and/or
shielding devices or measures that are clearly specified in the user's manual, the test
requirements of this document shall be applied with the specified devices or measures
in place.
The configuration and mode of operation during the measurements shall be precisely
noted in the test report. If the EUT has a large number of similar ports or ports with
many similar connections, a sufficient number shall be selected to simulate actual
operating conditions and to ensure that all the different types of termination are covered.
The measurements shall be carried out at one single set of parameters within the
operating ranges of temperature, humidity and atmospheric pressure specified for the
product and at the rated supply voltage, unless otherwise indicated in the basic standard.
The relevant conditions shall be recorded in the test report.
Where applicable, additional information on EUT configuration can be found in CISPR
16-2-1:2014+AMD1:2017, GB/T 6113.203-2020, GB 4824-2019 or CISPR 32:2015 as
referenced in Table 3 ~ Table 5.
5 Product documentation
The purchaser/user/installer shall be informed within the product documentation if
special measures have to be taken to achieve compliance. One example, would be the
need to use shielded or special cables.
6 Applicability
The application of measurements for emission(s) depends on the particular equipment,
its configuration, its ports, its technology and its operating conditions.
Measurements shall be applied to the relevant ports of the equipment according to the
requirements defined in Table 3 ~ Table 5. Measurements shall only be carried out
where the relevant ports exist.
It may be determined from consideration of the electrical characteristics and usage of
particular equipment that some of the measurements are inappropriate and therefore
unnecessary. In such a case it is required that the decision and justification not to
measure shall be recorded in the test report.
7 Uncertainty of measurement
Where guidance for the calculation of the instrumentation uncertainty of a measurement
is specified in GB/T 6113.402-2018 this shall be followed, and for these measurements
the determination of compliance with the limits in this document shall take into
consideration the measurement instrumentation uncertainty in accordance with GB/T
6113.402-2018. Calculations to determine the measurement result and any adjustment
of the test result required when the test laboratory uncertainty is larger than the value
for Ucispr given in GB/T 6113.402-2018 shall be included in the test report.
8 Compliance with this document
Where this document gives options for testing particular requirements with a choice of
test methods, compliance can be shown against any of the relevant test methods, using
the specific limits with the restrictions provided in the relevant tables clauses. For
example, floor standing shall be assessed against table clause 3.1, considering table
clause 3.2 is limited to small equipment and table clause 3.3 is limited to table top
equipment.
In any situation where it is necessary to retest the equipment the test method originally
chosen shall be used in order to ensure consistency of the results.
Equipment which fulfils the requirements across the frequency ranges specified in
Table 3 ~ Table 5 in this document is deemed to fulfil the requirements in the entire
frequency range from 9 kHz to 400 GHz.
Measurements do not need to be performed at frequencies where no limits are specified.
Note: CISPR TR 16-4-3 provides guidance on the applicability of limits to series
produced equipment.
9 Emission requirements
The emission requirements for equipment covered by this document are given on a port
by port basis and defined in Table 3 ~ Table 5. Annex A is provided for information
purposes only and lists proposed limits for DC power ports.
The measurements shall be conducted in a well-defined and reproducible manner and
performed in any order.
The description of the measurement, the measurement instrumentation, the
measurement methods, and the measurement set-up to be used are given in the standards,
which are referred to in Table 3 to Table 5. These standards are not repeated here,
however modifications or additional information needed for the practical application of
the measurements are given in this document.
The following shall be taken into account during the application of the measurements
defined in Table 3 ~ Table 5.
-- At transitional frequencies, the lower limit applies.