National Standard of The People s Republic of China

Transcription

1 Translated English of Chinese Standard: GB/T Translated by: Wayne Zheng et al. ICS L 06 GB National Standard of The People s Republic of China GB/T /IEC :2005 Replacing GB/T Electromagnetic compatibility Surge immunity test (IEC :2005, IDT) Issued on: May 20, 2008 Implemented on: January 1, 2009 Issued by: The General Administration of Quality Supervision, Inspection and Quarantine of PRC; and China National Standardization Administration Committee Page 1 of 51

2 Table of Contents Preface Scope Normative references Terms and definitions General Test levels Test instrumentation Test setup Test procedure Evaluation of test results Test report Annex A (informative) Selection of generators and test levels Annex B (informative) Explanatory notes B.1 Different source Impedance B.2 Application of the tests B.3 Installation classification B.4 Minimum immunity level of ports connected to the power supply network B.5 Equipment level immunity of ports connected to interconnection lines Annex C (informative) Considerations for achieving immunity for equipment connected to low voltage power systems References Page 2 of 51

3 Preface GB/T EMC Testing and Measurement Techniques currently includes the following components: GB/T Electromagnetic compatibility Overview of immunity tests GB/T Electromagnetic compatibility Electrostatic discharge immunity test GB/T Electromagnetic compatibility Radiated, radio-frequency, Electromagnetic field immunity test GB/T Electromagnetic compatibility Electrical fast transient/burst immunity test GB/T Electromagnetic compatibility Surge immunity test GB/T Electromagnetic compatibility Immunity to conducted disturbance, induced by radio-frequency fields GB/T Electromagnetic compatibility - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto GB/T Electromagnetic compatibility Power frequency magnetic field immunity test GB/T Electromagnetic compatibility - Pulse magnetic field immunity test GB/T Electromagnetic compatibility - Damped oscillatory magnetic field immunity test GB/T Electromagnetic compatibility Voltage dips, short interruptions and voltage variations immunity test GB/T Electromagnetic compatibility - Oscillatory waves immunity test Page 3 of 51

4 GB/T Electromagnetic compatibility - Harmonics and interharmonics including mains signaling at a.c. power port, low frequency immunity test GB/T Electromagnetic compatibility - Voltage fluctuation immunity test GB/T Electromagnetic compatibility - Test for immunity to conducted, common mode disturbances in the frequency range 0 Hz to 150 khz GB/T Electromagnetic compatibility - Ripple on d.c. input power port immunity test GB/T Electromagnetic compatibility - Unbalance immunity test GB/T Electromagnetic compatibility - Variation of power frequency, immunity test GB/T Electromagnetic compatibility Testing and Measurement Techniques: Voltage Dips, Short Interruptions and Voltage Variations on DC Input Port Immunity Test This Standard is the Part 5 of GB/T This Standard is equivalent to IEC :2005 (Ed. 2) Electromagnetic compatibility Surge immunity test In this Part, the vertical axis title of figure 2, 3, 5 and 6 in IEC :2005 are modified. This Part replaces GB/T Electromagnetic compatibility Testing and measurement techniques Surge immunity test Some contents in this document may involve the patents. The publisher of this document does not assume responsibility for identifying these patents. This Standard has the following main difference from GB/T : 1) Add new definitions 2) Add 10/700μs open-circuit voltage wave shape and 5/320μs short-circuit current wave shape; Page 4 of 51

5 3) Define the voltage/current waveform at EUT port in coupling/decoupling network; 4) Add coupling/decoupling network selection procedure diagram; 5) In the configuration of unshielded unsymmetrical interconnection lines, add coupling via a clamping circuit. 6) In the configuration of unshielded unsymmetrical interconnection lines, delete Line-to-ground coupling, and only define all line-to-ground coupling, and also change the coupling method to via arrestor. 7) Add the test requirements for high speed communications lines 8) Cancel the requirement for earth connection capacitor for the test of shielded lines grounded only at one end; 9) Add Alternative coupling method for testing single cables in a multi-shield configuration 10) Change the surge Repetition rate to at least 1/ minute. 11) Modify Climatic conditions 12) Modify Evaluation of test results 13) Define the specific requirements for test report; 14) Modify Table A.1 Selection of the test levels 15) Add the description of system level immunity in Annex B, and delete figure B.1 through Figure B.3 in 1999 version. 16) Add Annex C: 17) Re-edit the content of this Standard: a) Exchange Clause 4 Definition with Clause 3 General ; b) Change the centralized figure arrangement in the original standard into distributed arrangement by distributing the figures into the corresponding text. Annex A, B, and C of this Standard are informative annex. The specification is proposed and managed by China National EMC Standardization Technical Committee (SAC/TC 246). This Standard is drafted by: China MII Electronics Industry Standardization Institute. This Standard is written by: CHEN Shigang, Liu Jianpeng, Cai Hua-Qiang. This Standard replaces all the previous releases. Page 5 of 51

6 - GB/T Page 6 of 51

7 Electromagnetic compatibility - - Surge immunity test 1 Scope This Part of GB/T relates to the immunity requirements, test methods, and range of recommended test levels for equipment to unidirectional surges caused by overvoltage from switching and lightning transients. Several test levels which relate to different environment and installation conditions are defined. These requirements are developed for and are applicable to electrical and electronic equipment. The objective of this Standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to surges. The test method documented in this Part describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. NOTE As described in GB/Z , this is a basic EMC publication for use by its product committees. As also stated in GB/Z , 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 Electromagnetic standardization technical committee and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular immunity tests for their products. This Standard defines: - a range of test levels; - test equipment; - test setups; Page 7 of 51

8 - test procedures. The task of the described laboratory test is to find the reaction of the EUT under specified operational conditions, to surge voltages caused by switching and lightning effects at certain threat levels. It is not intended to test the capability of the EUT's insulation to withstand high-voltage stress. Direct injections of lightning currents, i.e., direct lightning strikes, are not considered in this Standard. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this section of this Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this section of this Standard are encouraged to investigate the possibility of applying the most recent edition of the normative documents indicated below. GB/T 4365 Electromagnetic compatibility Vocabulary (GB/T , idt IEC (161): 1990) GB/T High-voltage test techniques-part 1: General definitions and test requirements (GB/T , eqv IEC : 1989) GB/Z Electromagnetic compatibility-guide to the drafting of electromagnetic compatibility standards (neq IEC Guide 107: 1998) IEC Protection against lightning IEC Pulse techniques and apparatus - Part 1: Pulse terms and definitions 3 Terms and definitions For the purposes of this document, the terms and definitions in GB/T 4365 and the following apply. Page 8 of 51

9 References GB/T Eletrotechnical terminology Automatic control (IEC : 1998, IDT) GB/T Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests (idt IEC : 1992) GB Surge protective devices connected to low-voltage power distribution systems - Part 1: Performance requirements and testing methods (IEC : 1998, IDT) GB Surge protective devices connected to low-voltage power distribution systems - Part 12: Selection and application principles (IEC : 2002, IDT) GB/T Low-voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signaling networks Performance requirements and testing methods (IEC : 2000, IDT) GB/T Components for low-voltage surge protective Part 311: Specification for gas discharge tubes (GDT) (IEC : 2001, IDT) GB/T Components for low-voltage surge protective devices Part 321: Specifications for avalanche breakdown diode (ABD) (IEC : 2001, IDT) GB/T Components for low-voltage surge protective devices Part 331: Specification for metal oxide varistors (MOV) (IEC : 2003, IDT) GB/T Components for low-voltage surge protective devices Part 341: Specification for thyristor surge suppressors (TSS) (IEC : 2001, IDT) IEC (300) International Electrotechnical Vocabulary - Electrical and electronic measurements and measuring instruments - Part 311: General terms relating to measurements - Part 312: General terms relating to electrical measurements - Part 313: Types of electrical measuring instruments - Part 314: Specific terms according to the type of instrument IEC (all parts) Electrical Installations for Buildings IEC (all parts) Insulation coordination for equipment within low-voltage systems IEC (all parts) Low-voltage surge protective devices Page 51 of 51