GB 4824-2019 PDF in English
GB 4824-2019 (GB4824-2019) PDF English
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Industrial, scientific and medical equipment -- Radio-frequency disturbance characteristics -- Limits and methods of measurement
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Industrial, scientific and medical (ISM) radio-frequency equipment -- Disturbance characteristics -- Limits and methods of measurement
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Industrial, scientific and medical (ISM) radio-frequency equipment -- Electromagnetic disturbance characteristics -- Limits and methods of measurement
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Industrial, scientific and medical (ISM) radio-frequency equipment -- Electromagnetic disturbance characteristics -- Limits and methods of measurement
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Limits and methods of measurement of electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment
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Limits of radio interference of industrial, scientific and medical (ISM) radio frequency equipment
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GB 4824-2019: PDF in English GB 4824-2019
Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
ICS 33.100
L06
National Standards of People's Republic of China
Replace GB 4824-2013
Radio frequency disturbance characteristics of industrial, scientific and medical equipment
Limits and measurement methods
2019-12-17 released
2020-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Frequency of use of engineering medical equipment 4
5 Grouping and classification of equipment 5
6 Limits of electromagnetic disturbance 5
7 Measurement requirements 17
8 Special regulations for test site measurement (9kHz~1GHz) 27
9 Radiation measurement (1GHz~18GHz) 34
10 Field measurement 37
11 Radiation measurement safety protection of ISM radio frequency equipment 37
12 Measurement uncertainty 37
Appendix A (informative appendix) Examples of equipment grouping 38
Appendix B (informative appendix) Precautions for using spectrum analyzer (see 7.3.1) 40
Appendix C (Normative Appendix) Measurement of electromagnetic radiation disturbance when radio transmission signals are present 41
Appendix D (informative appendix) Interference propagation of industrial radio frequency equipment in the 30MHz~300MHz frequency band 42
Appendix E (informative appendix) CISPR recommendations for the protection of specific radio services in specific areas 43
Appendix F (informative appendix) Band allocation for safety-related radio services 44
Appendix G (informative appendix) sensitive radio service frequency band allocation 46
Appendix H (informative appendix) Statistical evaluation methods for batch products complying with CISPR standards 49
Appendix I (Normative Appendix) Artificial network (AN) used to evaluate the disturbance voltage of the DC power port of the semiconductor power converter 53
Appendix J (informative appendix) Measurement of grid-connected power converter (GCPC) --- Arrangement of effective measurement site configuration 59
Appendix K (informative appendix) The configuration and equipment of the test site --- When the type test is carried out in accordance with this standard, prevent no transformer
Guidelines for filter saturation effects caused by power converters 64
References 69
Preface
All technical content of this standard is mandatory.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 4824-2013 "Industrial, Scientific and Medical (ISM) Radio Frequency Equipment Disturbance Characteristics Limits and Measurement Methods", this
Compared with GB 4824-2013, the main technical changes are as follows.
---The name of the standard was changed to "Industrial, scientific and medical equipment radio frequency disturbance characteristic limits and measurement methods";
---Further clarified the scope of application of the standards in Chapter 1 (see Chapter 1);
---Modified "Chapter 2 Normative Reference Documents" (see Chapter 2);
--- "Chapter 3 Terms and Definitions" added AC power port, artificial power network, components, DC artificial network, DC power terminal
Port, grid-connected power converter, high-power power electronic system and equipment, photovoltaic power generation system, type test, full electric wave anechoic chamber, open
12 terms and definitions of test site and semi-anechoic chamber (see Chapter 3);
--- Added "5.3 User File" (see 5.3);
--- "6.2 1 set of equipment measured at the test site" has added the limit for equipment with a power greater than 75kVA, and the DC power port
Disturbance voltage limit (see 6.2);
---The main changes in "6.3 Two groups of equipment measured on the test site" are summarized as.
● When measuring at the test site, the 3m distance limit in the electromagnetic radiation disturbance limit of Group 2 A equipment was revised
(See Table 10 of the.2013 edition);
● "The peak limit of electromagnetic radiation harassment for the 2 groups of equipment that has a working frequency above 400MHz and produces continuous harassment" has been increased
11.7GHz~12.7GHz limit (see Table 13 of the.2013 edition);
● Deleted "Table 15 The electrical equipment of Group B equipment that has a working frequency above 400MHz and produces fluctuating disturbances other than continuous waves.
Magnetic radiation disturbance peak limit” (see Table 15 in the.2013 edition);
● Added "Table 15 with working frequency above 400MHz, 2 groups of Class B electromagnetic radiation disturbance limits (APD level corresponds to
10-1)” (see Table 15 of the.2013 edition);
---Added "Figure 3 Typical cable arrangement for 3m distance radiated disturbance measurement ---Desktop tested equipment" (see Figure 3);
--- Added "Figure 4 Typical measurement arrangement for conduction and/or radiated disturbance measurement of floor-standing equipment under test---three-dimensional diagram" (see Figure 4);
---Added "7.5.3.1.3 30MHz~18GHz radiated disturbance measurement connected to the laboratory AC grid" (see 7.5.3.1.3);
---"7.6 Load conditions of the equipment under test" added "ISM radio frequency lighting equipment, medium voltage (MV) and high voltage (HV) switchgear,
Grid-connected power converter" requirements (see 7.6);
---Added "8.2.2 Grid-connected power converter measurement" (see 8.2.2);
---Added "9.4.2 Working conditions of the equipment under test (EUT)" (see 9.4.2);
---Added "9.4.3 Forecast" (see 9.4.3);
---Added "9.4.4 Final measurement" (see 9.4.4);
--- "12 Equipment Conformity Assessment" was revised to "12 Measurement Uncertainty" (see Chapter 12 of the.2013 edition);
--- Deleted "13 diagrams and flowcharts" (see Chapter 13 of the.2013 edition);
---Added "Appendix H (informative appendix) Statistical evaluation methods for batch products in compliance with CISPR standards" (see appendix
H);
---Added "Appendix I (Normative Appendices) to the artificial network used to evaluate the disturbance voltage of the DC power port of the semiconductor power converter
Network (AN)” (see Appendix I);
---Added "Appendix J (informative appendix) Measurement of grid-connected power converter (GCPC) --- Effective measurement site configuration
Set” (see Appendix J);
---Added "Appendix K (informative appendix) test site configuration and equipment---type test in accordance with this standard
“Guidelines for preventing the saturation effect of the suppression filter of transformerless power converters” (see Appendix K).
The translation method used in this standard is equivalent to the adoption of CISPR11.2016 "Industrial, scientific and medical equipment radio frequency disturbance characteristic limits and measurement
Measure Method” (E6.1).
The Chinese documents that have consistent correspondence with the normatively cited international documents in this standard are as follows.
---GB/T 6113.101-2016 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-1.Radio
Disturbance and immunity measurement equipment measurement equipment (CISPR16-1-1.2010, IDT);
---GB/T 6113.203-2016 Radio disturbance and immunity measurement equipment and measurement method specification Part 2-3.Radio
Disturbance and immunity measurement method Radiated disturbance measurement (CISPR16-2-3.2010, IDT);
---GB 9706.4-2009 Medical electrical equipment Part 2-2.Special requirements for the safety of high-frequency surgical equipment (IEC 60601-2-2.
2006, IDT);
---GB/T 10066.6-2018 Test methods for electric heating and electromagnetic treatment devices Part 6.Industrial microwave heating device output
Power measurement method (IEC 61307.2011, MOD);
---GB/T 15579.10-2008 Arc Welding Equipment Part 10.Electromagnetic Compatibility (EMC) Requirements (IEC 60974-10.
2007, IDT);
---YY0505-2005 Medical electrical equipment Part 1-2.General requirements for basic safety and basic performance
Magnetic disturbance requirements and tests (IEC 60601-1-2.2001, IDT).
This standard has made the following editorial changes.
---Refer to the "Regulations on Radio Frequency Allocation of the People's Republic of China (Order No. 46 of the Ministry of Industry and Information Technology)" for informational attachments
Record G. The corresponding frequency band in the allocation of sensitive radio service frequency bands will be modified to make it more suitable for use in my country.
This standard was proposed and managed by the National Standardization Management Committee.
Drafting organizations of this standard. Shanghai Electric Power Research Institute, State Grid Electric Power Research Institute Co., Ltd., China Electric Power Research Institute Co., Ltd.
Company, Beijing Medical Device Inspection Institute, Jiangsu Medical Device Inspection Institute, South China Laboratory of China Quality Certification Center, Hitachi Building Technology
(Guangzhou) Co., Ltd., Tianjin Radio Monitoring Station, Shanghai Matsushita Microwave Oven Co., Ltd., Shanghai New Times Electric Co., Ltd., Coal
Science and Technology Research Institute Co., Ltd., China Household Electrical Appliances Research Institute, Beijing Jiaotong University, the Fifth Institute of Electronics, Ministry of Industry and Information Technology, Shanghai
Electric Distributed Energy Technology Co., Ltd.
The main drafters of this standard. Xie Yanping, Ye Qiongyu, Xiao Baoming, Zhao Mingmin, Meng Zhiping, Miao Jia, Xu Ling, Liu Haichao, Huang Wenguang, Liu Jingli,
Lu Jun, Xu Dongyu, Zhang Mei, Lin Shanshan, Xin Zhonghua, Li Yan, Wen Yinghong, Chen Hui, Liu Zhijie, Zhu Fengtian, Wang Longfei.
The previous versions of the standard replaced by this standard are as follows.
---GB 4824-1984, GB 4824-1996, GB 4824-2001, GB 4824-2004, GB 4824-2013.
Radio frequency disturbance characteristics of industrial, scientific and medical equipment
Limits and measurement methods
1 Scope
This standard applies to industrial, scientific and medical electrical (hereinafter referred to as engineering medicine) equipment with a working frequency in the range of 0Hz to 400GHz
And household and similar appliances designed to generate and/or locally use radio frequency energy.
This standard covers the emission requirements of radio frequency disturbances in the 9kHz~400GHz frequency band. However, it is only necessary to enter the frequency range specified in Chapter 6
Line measurement.
For the engineering and medical radio frequency applications defined in the International Telecommunication Union (ITU) (see definition 3.13), this standard covers 9kHz~18GHz
Radio frequency disturbance emission requirements in the frequency band.
Note. The emission requirements of induction cookers are in accordance with the requirements of GB 4343.1-2018.
This standard is also applicable to the technical medical radio frequency lighting equipment and purple radio frequency lighting equipment in the technical medical frequency band defined by the International Telecommunication Union (ITU)
Outside radiation equipment.
This standard does not apply to equipment that has been covered in other CISPR product categories or other product emission standards.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 4365-2003 Electrotechnical terminology electromagnetic compatibility (IEC 60050-161.1990, IDT)
GB/T 6113.102-2018 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-2.Radio disturbance
Coupling device for conducting disturbance measurement with immunity measuring equipment (CISPR16-1-2.2014, IDT)
GB/T 6113.104-2016 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-4.Radio disturbance
Antenna and test site for radiated disturbance measurement with immunity measurement equipment (CISPR16-1-4.2012, IDT)
GB/T 6113.201-2018 Radio disturbance and immunity measurement equipment and measurement method specification Part 2-1.Radio disturbance
And Immunity Measurement Method Conducted Disturbance Measurement (CISPR16-2-1.2014, IDT)
GB/T 6113.402-2018 Radio disturbance and immunity measurement equipment and measurement method specification Part 4-2.Uncertainty,
Statistics and Limit Modeling Uncertainty of Measuring Equipment and Facilities (CISPR16-4-2.2014, IDT)
GB/T 31251.2-2014 Resistance welding equipment Part 2.Electromagnetic compatibility requirements (IEC 62135-2.2007, IDT)
3 Terms and definitions
The following terms and definitions defined in GB/T 4365-2003 apply to this document.
3.1
AC power port
A port used to connect a public low-voltage AC power distribution network or other low-voltage AC power devices.
3.2
Arc welding equipment
The equipment that applies current and voltage has the characteristics required for arc welding and similar processes.
3.3
Artificial power network
Provide a specified impedance network between the terminals of the equipment under test in the radio frequency range, which can connect the test circuit and the useless power supply
The radio frequency signal is isolated and the disturbance voltage is coupled to the measuring receiver.
Note 1.There are two basic types of artificial power networks, namely V-type for coupling asymmetric voltage and Δ for coupling symmetric voltage and asymmetric voltage.
The internet.
Note 2.The terms line impedance stabilization network (LISN) and V-type artificial power network can be used interchangeably.
3.4
Boundary of the device under test
An imaginary straight line boundary containing the simple geometry of the device under test.
Note. All interconnecting cables are included in this limit.
3.5
Components
It is expected to be used to assemble higher-level equipment or systems and provide one or more products with specific functions.
4 Frequency of use of engineering medical equipment
According to the International Telecommunication Union (ITU) assigned frequency table, my country assigns radio frequency applications (see definition 3.13) to engineering and medical sciences as the fundamental wave
The frequency is shown in Table 1.
5 Grouping and classification of equipment
5.1 Grouping
In order to simplify the distinction between the relevant limits, the equipment within the scope of this standard is divided into two groups, namely 1 group and 2 groups.
1 set of equipment
Other equipment within the scope of this standard except for the 2 groups of equipment.
2 sets of equipment
Including in the form of electromagnetic radiation, inductive and/or capacitive coupling, intentionally generated and used or partially used in the frequency range of 9kHz~400GHz
For radio frequency energy, all engineering and medical radio frequency equipment used for material processing or inspection/analysis purposes, or used to transmit electromagnetic energy.
Note. Refer to Appendix A for the classification examples of Group 1 and Group 2 equipment.
5.2 Classification
According to the intended use of the equipment used in the electromagnetic environment, this standard defines two types of equipment, namely Type A and Type B.
Class A equipment
Equipment used in non-residential environments and not directly connected to residential low-voltage power supply network facilities.
Class A equipment should meet Class A limits.
Arc welding equipment containing arc ignition or arc stabilization devices and independent arc ignition or arc stabilization devices for welding shall be classified as Class A equipment.
Class B equipment
Household equipment and equipment used in facilities directly connected to the residential low-voltage power supply network.
Class B equipment should meet Class B limits.
5.3 User files
The manufacturer and/or supplier of the device shall ensure to inform the user of the group and category the device belongs to in the form of a label or accompanying documents.
At the same time, the manufacturer/supplier should also specify the meaning of the group and category in the accompanying documents.
The accompanying documents should include details of all preventive measures available to the buyer or user to ensure normal operation and use
Harmful radio frequency interference (RFI). In the framework of this standard, the following details are included.
● The radio frequency interference that may be caused by the operation of Class A equipment in a specific environment.
● When connecting Class A equipment to a low-voltage power supply network, please refer to footnote a and footnote b of Table 2, and footnote b of Table 3 respectively.
And Table 6 footnote a.
● Measures should be taken during installation to reduce the emission of Class A equipment, see Table 2 footnote b and Table 8 footnote a.
For Class A equipment, the product instruction manual should include the following.
Warning---This equipment is not used in a residential environment, and it cannot provide adequate protection for radio reception in this environment.
6 Limits of electromagnetic disturbance
6.1 Overview
For measurements on standardized sites, the following regulations constitute the requirements for type testing.
Class A equipment can be measured on the test site or on-site by the manufacturer.
Note 1.Due to factors such as the size, complexity of the structure and operating conditions of the tested equipment itself, some engineering medical equipment can only be determined by on-site measurement.
Whether it meets the radiation disturbance limit specified in this standard.
Class B equipment should be measured at the test site.
Note 2.The limit is determined based on the probability of interference, if there is interference, it may be necessary to apply additional terms.
A lower limit should be used on the transition frequency.
Measuring instruments and measuring methods are specified in Chapter 7, Chapter 8, and Chapter 9.
This standard provides different test methods for specific test requirements. The limits corresponding to the test methods specified in the relevant table can be used.
Can show its compliance. In the case where the equipment needs to be retested, the test method originally selected should be used to ensure consistent results.
Consistency.
6.2 1 set of equipment measured on the test site
6.2.1 Conducted disturbance limit
6.2.1.1 Overview
The device under test should.
1) At the same time, the average value limit specified by the average value detector and the quasi-peak value specified by the quasi-peak detector
Value limit (see 7.3); or
2) The average value limit is met when measured with a quasi-peak detector (see 7.3).
The specified limits for low-voltage DC power ports only apply to grid-connected power converters (GCPC) assembled into photovoltaic power generation systems.
The equipment uses 50Ω/50μH CISPR artificial power network (V-AMN) or voltage probe (see 7.3.3
And Figure 1). See Table 2 and Table 4 for the regulation of the disturbance voltage limit of the low-voltage AC power port in the frequency range of 150kHz~30MHz.
When measuring at the test site, use a 150Ω CISPR network (DC-AN) (see 7.3.2.3 and Appendix I) or a current probe (see
GB/T 6113.102-2018). See Table 3 and Table 5 for the regulation of the disturbance voltage limit of the low-voltage DC power supply port in the 150kHz~30MHz frequency band.
6.3.2 Limits of electromagnetic radiation disturbance
6.3.2.1 Overview
When using an instrument with a peak, quasi-peak or average detector for measurement, the equipment under test should meet the limit requirements in the corresponding table.
The limit in the frequency band below 30MHz refers to the magnetic field component of electromagnetic radiation, and the limit in the frequency band above 30MHz refers to the electric field component of electromagnetic radiation.
In addition to the assigned frequency bands listed in Table 1, the electromagnetic radiation disturbance limits in the 150kHz~1GHz frequency band are specified as follows. Group 2 Class A equipment
It is specified in Table 10, and Group B equipment is specified in Table 12.
The limits specified in Table 10 and Table 12 apply to all electromagnetic disturbances at all frequencies, including the frequency bands in footnote b of Table 1.
For Class A resistive welding equipment, the limits in Table 10 apply to the equipment in the 30MHz~1GHz frequency band when the equipment is in the starting operation state.
For electromagnetic radiation disturbance, the limits specified in Table 6 apply to the standby (or idle) state. For Class B resistive welding equipment, the limits of Table 12 apply
For the electromagnetic radiation disturbance when the equipment is in the starting operation state, the limits specified in Table 7 apply to the standby (or idle) state.
For Class A arc welding equipment, the limits in Table 11 apply to the equipment in the starting operation state, and the limits in Table 6 are standby (or idle)
status. For Class B arc welding equipment, the limits in Table 7 apply to the equipment in the start-up operation state and standby (or idle) state.
For Class A EDM equipment, the limits are shown in Table 11.
For engineering medical radio frequency lighting devices whose working frequency is in the frequency band assigned by engineering medicine (see ITU regulations in Table 1), the limits in Table 12 can be used.
When operating in standby mode, high-frequency surgical equipment should meet the limits specified in Table 6 and Table 7.
Refer to Appendix E and Table E.1 for special terms and limits for protecting special security services.
When measuring in OATS or SAC, class A equipment can measure at a distance of 3m, 10m or 30m, while class B equipment can measure at 3m
Or measure at a distance of 10m (see Table 10 and Table 12).
In the 30MHz~1GHz frequency band, the measurement distance of 3m is only applicable to equipment that meets the requirements of 3.17.
If the EUT is placed in the effective test area of the full anechoic chamber, Class A and B equipment can be used in the 3m standard of the full anechoic chamber
Test under distance. When using FAR site measurement in accordance with this standard, it is only applicable to desktop equipment.
6.4 Class A group 1 and group 2 equipment measured on site
6.4.1 Conducted disturbance limit
Under the conditions of on-site measurement, conduction disturbance assessment is not required.
6.4.2 Limits of electromagnetic radiation disturbance
The limits given in Table 16 apply to Group 1 Class A equipment, and the limits given in Table 17 apply to Group 2 Class A equipment.
7 Measurement requirements
7.1 Overview
The specific requirements of this chapter, together with the limits of Chapter 6, constitute the basic electromagnetic compatibility requirements of this standard. For the test site
Quantity (see Chapter 8), the compliance verification of the basic electromagnetic compatibility requirements of a given type of equipment can be regarded as a type test.
The measurement requirements at such test sites are type test requirements. If the conditions in Appendix H for statistical evaluation of measurement results are complied with,
Type testing can be considered as type approval.
Class A equipment is determined by the manufacturer to be measured at the test site or on-site. Class B equipment should be measured at the test site.
See Chapter 8 and Chapter 9 for specific requirements for measurement at the test site. See Chapter 10 for on-site measurement requirements.
The requirements specified in this chapter apply to the test site and/or on-site measurement.
Only need to measure in the frequency band specified in Chapter 6 limits.
Components or components of high-end equipment or systems that are only expected to be assembled at their respective operating positions can be carried out in accordance with the requirements of this standard
test. In the test under the framework of this standard, such parts or assemblies should be regarded as an independent device. Parts or groups measured at the test site
The software cannot be proved to meet the relevant requirements, and it can also be installed in a high-end system for on-site evaluation. This situation should meet the requirements of 6.4.
Note 1.The environment of this standard includes the residential, commercial or industrial environment described in IEC TR61000-2-5.Equipment that complies with the requirements of this standard is allowed in these rings
Operation and use in the environment will not increase the risk of RFI. There may also be other product standards that allow the introduction of components or components of high-end systems.
Compliance test is performed, but it is not the environment specified in IEC TR61000-2-5.It is up to the manufacturer to determine the conformity test of the component or assembly to adopt the standard or
Other applicable product standards.
Note 2.Such components include but are not limited to power converters, which are used for distributed power generation and provide electrical energy to low-voltage AC power supply networks
Or install or use its own dedicated transformer to supply power to the medium-voltage distribution network, and also include the use of low-voltage AC power supply networks to power high-end systems
气components.
7.2 Environmental noise
The test site for the type test should be able to distinguish the emission of the equipment under test from the environmental noise. This environmental suitability can be
When the equipment under test is not working, it is determined by measuring the environmental noise level. It is necessary to ensure that the environmental noise level is less than the limit specified in 6.2 or 6.3.
At least 6dB lower to facilitate measurement. For more information on compliance testing in the presence of environmental noise, see GB/T 6113.201-
6.2.2 of.2018 and 6.2.2 of CISPR16-2-3.2010.
If the environmental level plus the emission of the device under test does not exceed the specified limit, there is no need to reduce the environmental level to the specified limit.
Below the value of 6dB, in this case, the device under test can be considered to have met the specified limit.
When measuring conducted radio frequency disturbances, local radio emissions may increase the environmental noise level at certain frequencies. At this time
Insert an appropriate RF filter between the industrial network (V-AMN and/or DC-AN) and the respective laboratory AC or DC power supply
Or measure in a shielded room. The components that constitute the radio frequency filter ......
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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