GB 4824-2019 English PDF (GB4824-2019)

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GB 4824-2019: Industrial, scientific and medical equipment -- Radio-frequency disturbance characteristics -- Limits and methods of measurement
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...