Standard No.:	GB/T 17626.6-2017
English Name:	Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields
Chinese Name:	电磁兼容 试验和测量技术 射频场感应的传导骚扰抗扰度
Chinese Classification:	L06    Electromagnetic compatibility
Professional Classification:	GB    National Standard
ICS Classification:	33.100.20 33.100.20    Immunity 33.100.20
Issued by:	AQSIQ AND SAC
Issued on:	2017-12-29
Implemented on:	2018-7-1
Status:	valid
Superseding:	GB/T 17626.6-2008 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances induced by radio-frequency fields
Language:	English
File Format:	PDF
Word Count:	35000 words
Price(USD):	950.0
Delivery:	via email in 1 business day

Electromagnetic Compatibility — Testing and Measurement Techniques — Immunity to Conducted Disturbances, Induced by Radio-frequency Fields 1 Scope This part of GB/T 17626 relates to the conducted immunity requirements of electrical and electronic equipment to electromagnetic disturbances coming from intended radio-frequency transmitters in the frequency range 150 kHz up to 80 MHz. Equipment not having at least one conducting wire and/or cable (such as mains supply, signal line or earth connection) which can couple the equipment to the disturbing RF fields is excluded from the scope of this publication. Note 1: Test methods are defined in this part of GB/T 17626 to assess the effect that conducted disturbing signals, induced by electromagnetic radiation, have on the equipment concerned. The simulation and measurement of these conducted disturbances are not adequately exact for the quantitative determination of effects. The test methods defined are structured for the primary objective of establishing adequate repeatability of results at various facilities for quantitative analysis of effects. The object of this standard is to establish a common reference for evaluating the functional immunity of electrical and electronic equipment when subjected to conducted disturbances induced by RF fields. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. Note 2: As described in GB/Z 18509[1], this standard is a basic EMC publication for use by relevant product committees. As also stated in GB/Z 18509[1], the product committees are responsible for determining whether this immunity test standard should be applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria. The National Technical Committee on Electromagnetic Compatibility of Standardization Administration of China (SAC/TC 246) and its sub-committees cooperate with relevant product committees for standardization to evaluate test levels and performance criteria for specific immunity tests on their products. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050(161) International Electrotechnical Vocabulary (IEV) — Chapter 161: Electromagnetic Compatibility 3 Terms and Definitions For the purposes of this document, the terms and definitions given in IEC 60050-161 as well as the following apply. 3.1 artificial hand electrical network simulating the impedance of the human body under average operational conditions between a hand-held electrical appliance and earth Note: The construction should be in accordance with CISPR 16-1-2[3]. [IEC 60050-161:1990, 161-04-27] 3.2 auxiliary equipment; AE equipment necessary to provide the equipment under test (EUT) with the signals required for normal operation and equipment to verify the performance of the EUT 3.3 clamp injection clamp injection is obtained by means of a clamp-on “current” injecting device on the cable 3.4 clamp injection device clamp-on “current” injecting device on a cable being either a current clamp or an electromagnetic clamp 3.4.1 current clamp transformer, the secondary winding of which consists of the cable into which the injection is made 3.4.2 electromagnetic clamp (EM clamp) injection device with combined capacitive and inductive coupling 3.5 common mode impedance ratio of the common mode voltage and the common mode current at a certain port Note: This common mode impedance can be determined by applying a unity common mode voltage between the terminal(s) or screen of that port and a reference plane (point). The resulting common mode current is then measured as the vectorial sum of all currents flowing through these terminal(s) or screen, see also Figures 8a) and 8b). 3.6 coupling factor ratio given by the open-circuit voltage (e.m.f.) obtained at the EUT port of the coupling (and decoupling) device divided by the open-circuit voltage obtained at the output of the test generator 3.7 coupling network electrical circuit for transferring energy from one circuit to another with a defined impedance Note: Coupling and decoupling devices can be integrated into one box [coupling and decoupling network (CDN)] or they can be in separate networks. 3.8 coupling/decoupling network; CDN electrical circuit incorporating the functions of both the coupling and decoupling networks 3.9 decoupling network (decoupling device) electrical circuit for preventing test signals applied to the EUT from affecting other devices, equipment or systems that are not under test 3.10 test generator generator (RF generator, modulation source, attenuators, broadband power amplifier and filters) capable of generating the required test signal Note: See Figure 3. 3.11 electromotive force (e.m.f.) voltage at the terminals of the ideal voltage source in the representation of an active element 3.12 measurement result Umr voltage reading of the measurement equipment 3.13 voltage standing wave ratio; VSWR ratio of a maximum to an adjacent minimum voltage magnitude along the line

Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Test Levels 6 Test Equipment and Level Adjustment Procedures 6.1 Test Generator 6.2 Coupling and Decoupling Devices 6.3 Verification of the Common Mode Impedance at the EUT Port of Coupling and Decoupling Devices 6.4 Setting of the test generator 7 Test Setup and Injection Methods 7.1 Test Setup 7.2 EUT Comprising a Single Unit 7.3 EUT Comprising Several Units 7.4 Rules for Selecting Injection Methods and Test Points 7.5 CDN Injection Application 7.6 Clamp Injection Application When the Common Mode Impedance Requirements Can Be Met 7.7 Clamp Injection Application When the Common Mode Impedance Requirements Cannot be Met 7.8 Direct Injection Application 8 Test Procedure 9 Evaluation of the Test Results 10 Test Report Annex A (Normative) EM and Decoupling Clamps Annex B (Informative) Selection Criteria for the Frequency Range of Application Annex C (Informative) Guide for Selecting Test Levels Annex D (Informative) Information on Coupling and Decoupling Networks Annex E (Informative) Information for the Test Generator Specification Annex F (Informative) Test Setup for Large EUTs Annex G (Informative) Measurement Uncertainty of the Voltage Test Level Annex H (Informative) Measurement of AE Impedance Annex I (Informative) Port to Port Injection Annex J (Informative) Amplifier Compression and Non-linearity Bibliography