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GB/T 7343-2017 English PDF

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GB/T 7343-2017: Methods of measurement of the suppression characteristics of passive EMC filtering devices
Status: Valid

GB/T 7343: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 7343-2017English1099 Add to Cart 6 days [Need to translate] Methods of measurement of the suppression characteristics of passive EMC filtering devices Valid GB/T 7343-2017
GB/T 7343-1987English759 Add to Cart 4 days [Need to translate] Method of measurement of the suppression characteristics of passive radio interference filters and suppression components over the frequency range of 10kHz to 30MHz Obsolete GB/T 7343-1987

PDF similar to GB/T 7343-2017


Standard similar to GB/T 7343-2017

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Basic data

Standard ID GB/T 7343-2017 (GB/T7343-2017)
Description (Translated English) Methods of measurement of the suppression characteristics of passive EMC filtering devices
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L06
Word Count Estimation 55,579
Date of Issue 2017-07-31
Date of Implementation 2018-02-01
Older Standard (superseded by this standard) GB/T 7343-1987
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 7343-2017: Methods of measurement of the suppression characteristics of passive EMC filtering devices


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Measurement Method of Inhibiting Characteristics of Passive EMC Filter Devices) ICS 33.100 L06 National Standards of People's Republic of China Replacing GB/T 7343-1987 Measurement of suppression characteristics of passive EMC filter (IEC /CISPR 17.2011, IDT) 2017-07-31 Posted 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and Definitions, Abbreviations 1 3.1 Terms and definitions 1 3.2 Abbreviations 3 4 EMC filter device 4 4.1 EMC filter classification 4 4.2 Insertion loss 5 4.3 Impedance 6 4.4 S parameter 6 5 insertion loss measurement 8 5.1 Overview 8 5.2 Measurement Layout 9 5.3 Insertion Loss Measurement Method (Program) 11 5.4 Calibration and Verification 12 5.5 Evaluation of Uncertainty in Insertion Loss Measurement 15 6 impedance measurement 15 6.1 Overview 15 6.2 Direct Method 15 6.3 Indirect Method 16 Measurement of 7 S parameters 7.1 Measurement Arrangements and Procedures 19 7.2 Test Arrangement Calibration 23 7.3 Measurement Uncertainty 23 Submission of test results 8.1 Overview 24 8.2 Insertion Loss 24 8.3 Impedance 24 8.4 S parameters 24 Appendix A (Normative) EMC filter device suppression characteristics of measurement uncertainty assessment 25 Appendix B (Informative) Insertion Loss Measurement Test Case 29 Appendix C (Informative) Non-50Ω system insertion loss test method 32 Appendix D (Informative) Buffer Network for Insertion Loss Measurement 34 Appendix E (informative) General discussion on measurement of insertion loss 36 Appendix F (Informative) Impedance Measurement Arrangements Appendix G (informative) CMCC S parameter measurement method 43 Appendix H (Informative) Measurement of leadless DUTS parameters 48 References 50

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 7343-1987 "10kHz ~ 30MHz passive radio interference filter and suppression element suppression characteristics Measurement methods". Compared with GB/T 7343-1987, the main technical content changes as follows. --- The standard name by the "10kHz ~ 30MHz passive radio interference filter and suppression element suppression characteristics of the measurement method" to "Passive EMC filter suppression characteristics of measurement methods"; --- Chapter 3 added eight terms and 15 acronyms; --- Chapter 4 adds EMC filter classification, insertion loss calculation, asymmetric (common mode) mode, symmetrical (differential mode) mode And a detailed description of the asymmetric mode; --- Chapter 5 of the measurement of insertion loss to make some changes, including the measurement layout, measurement methods (refined offset and unbiased Set measurement content), and increased the calibration and verification and uncertainty of the content; --- Chapter 6 adds impedance measurement content, including direct and indirect methods. Increase the measurement of the layout and procedures, test the layout of the school Accuracy of measurement and measurement; --- Chapter 6 added S-related content, including two-port S parameters and four-port S parameters. Specifically for the S parameter said Measurement of S parameters (including measurement layout and procedures, test fixtures), calibration of test setup, uncertainty of measurement, etc. --- Increasing the normative appendix AEMC filter suppression characteristics of the measurement uncertainty assessment; --- Added information Appendix B insertion loss measurement test case examples; --- Increased information Appendix C non-50Ω system insertion loss measurement method; --- Added information Appendix D suitable for insertion loss measurement buffer network implementation; --- Increased information Appendix E insertion loss measurement of the general discussion; --- Increased information appendix F impedance measurement test layout; --- Increased information appendix G common mode choke S-parameter measurement; --- Increased information appendix H lead-free DUTS parameters of the measurement layout; --- CISPR17.2011 part of the inductance and resistance symbols are wrong, this standard has been amended; --- CISPR17.2011 Chapter 4 "EMC filter device classification (including Table 1)" of the suspension section, does not meet the national standard, the standard The suspension section as 4.1, the other extension; --- CISPR17.2011 Appendix A uncertainty in the form of layout problems, the synthesis of standard uncertainty and expansion of uncertainty Both columns were changed to traffic; --- CISPR 17.2011 Appendix A Table A.2, the calculation of uncertainty has an error, this standard has been amended; --- In the description of formula (E.1) in Appendix E of CISPR 17.2011, the original text "V2 = V0/2" has the error "V20 = V0/2" This standard has been amended; --- Table A.2 Impedance Measurement Uncertainty In the example, the value of the impedance test equipment is wrong. After confirming the communication with CISPR, Revised to 0.38, the corresponding standard is uncertain, the standard uncertainty of synthesis and the extended uncertainty are also revised. --- In Appendix H Figure H.1 added "Note. The use of transformers is to achieve impedance transformation" to avoid ambiguity. This standard uses the translation method identical with CISPR17.2011 "passive EMC filter suppression characteristics of measurement." And this standard The documents of our country whose correspondence in the normative references have a consistent correspondence are as follows. --- GB/T 4365-2003 Electrotechnical terminology Electromagnetic compatibility [IEC 60050 (161) .1990 and Amd.1-1997 and Amd.2-1998, IDT] --- GB 14023-2011 Vehicles, boats and internal combustion engines radio disturbance characteristics used to protect the car receiver limits and measurement Method (IEC /CISPR12.2009, IDT) This standard is proposed and managed by the National Radio Frequency Standardization Technical Committee (SAC/TC79). This standard was drafted unit. Shanghai Electric Apparatus Research Institute, China Electronics Standardization Institute, Beijing Shiwei Albert CHAN Technology Co., Ltd. Company, Schaffner Electromagnetic Compatibility (Shanghai) Co., Ltd., Changzhou Kennedy Electronics Co., Ltd., Shanghai Nichia Electronics Co., Ltd., Beijing Guanghua Shi Technologies, Shanghai Heng Electronics Co., Ltd., Ening Security Technology (Shanghai) Co., Ltd., Huawei Technologies Co., Ltd. The main drafters of this standard.Zheng Junqi, Liu Yuan, Chen Li, Wu Xiaoning, Li Yanxia, Yang Zhihui, Qu Daxin, Weng Yanwen, Huang Yong, Liu Jianxin, Qiu Hailiang, Wang Gang, Li Manshan, Xu Qiang Hua, Wan Changyong, Ye Qiongyu, Song Jiangwei, Huang Xuefeng. This standard replaces the standards previously issued as. --- GB/T 7343-1987. Measurement of suppression characteristics of passive EMC filter

1 Scope

This standard specifies the measurement method for the suppression characteristics of passive EMC filter devices used in power lines, signal lines and other lines. The methods specified in this standard also apply to devices that combine overvoltage protection devices with EMC filter devices. Depending on the device and the measurement circuit, the measurement method is suitable for use in the frequency range from 9 kHz to several GHz. Note. The measurement methods in this standard apply up to 40GHz. This standard specifies the laboratory test (type test) and factory test procedures. This standard also has two bias and bias test strips Under the test method to make the provisions. The measurement method under bias conditions is used to determine the potential non-linearity of the EMC filter, such as the saturation of the inductor with the core effect. This test is used to indicate the availability of the filter device for a particular application (for example, a frequency inverter can deliver high amplitude common mode pulse currents to Inductance saturation). If other methods can be used to determine the non-linearity of the filter, the measurement under bias conditions can be ignored (eg A separate inductor saturation measurement was performed).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. IEC 60050 (161) International Electrotechnical Vocabulary (IEV) chapter 161. Electromagnetic compatibility [Internationalelectrotechnicalvo- cabulary (IEV) -Chapter161.Electromagneticcompatibility] IEC /CISPR12.2009 Radio, Harassment Characteristics of Vehicles, Boats and Internal Combustion Engines Limits and Measurements for External Receiver Protection Methods (Vehicles, boats and internal combustion engines-Radiodisturbance characteristics-Limits and methodsofmeasurementfortheprotectionofoff-boardreceivers) IEC /CISPR16-1-1 Radio disturbance and immunity measuring apparatus and methods - Part 1-1 - Specification for radio disturbance and / Immunity measuring equipment Measurement equipment (Specificationforradiationistanceandimmunitymeasuringapparatus andmethods-Part 1-1.adiodisturbanceandimmunitymeasuringapparatus- Measuringapparatus) 3 Terms and Definitions, Abbreviations 3.1 Terms and definitions IEC 60050 (161) and the following terms and definitions apply to this document. 3.1.1 Bias current bias Current flowing through the device under test (DUT) conductor at DC or AC operating frequency. 3.1.2 Bias voltage biasvoltage Voltage present at the operating frequency of a dc or ac power supply between specified parts of the device under test (DUT).

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