GB/T 17626.34-2012 English PDFUS$534.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 17626.34-2012: Electromagnetic compatibility -- Testing and measurement techniques -- Voltage dips, short interruptions and voltage variations immunity tests for equipment with mains current more than 16 A per phase Status: Valid
Basic dataStandard ID: GB/T 17626.34-2012 (GB/T17626.34-2012)Description (Translated English): Electromagnetic compatibility -- Testing and measurement techniques -- Voltage dips, short interruptions and voltage variations immunity tests for equipment with mains current more than 16 A per phase Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L06 Classification of International Standard: 33.100.20 Word Count Estimation: 27,224 Quoted Standard: GB/T 4365; GB/Z 18039.7; IEC 61000-4-30 Adopted Standard: IEC 61000-4-34-2009, IDT Regulation (derived from): National Standards Bulletin No. 13 of 2012 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 Summary: This standard specifies the low-voltage supply grid connected electrical and electronic equipment to voltage dips, short interruptions and voltage variations immunity test methods and range of preferred test level. This section applies to the mains with r GB/T 17626.34-2012: Electromagnetic compatibility -- Testing and measurement techniques -- Voltage dips, short interruptions and voltage variations immunity tests for equipment with mains current more than 16 A per phase---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. Electromagnetic compatibility - Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with mains current more than 16 A per phase ICS 33.100.20 L06 National Standards of People's Republic of China Electromagnetic compatibility test and measurement technology main power supply Voltage sag of equipment with current per phase greater than 16A, Short-term interruption and voltage change immunity test (IEC 61000-4-34.2009, IDT) Released on.2012-06-29 2012-09-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by the National Standardization Administration of China Table of contentsForeword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Overview 3 5 Test level 3 6 Test equipment 6 7 Test arrangement 7 8 Test procedure 7 9 Evaluation of test results 9 10 Test report 10 Appendix A (normative appendix) Test generator (peak impulse) current drive capability 11 Appendix B (informative appendix) Electromagnetic environment classification 13 Appendix C (informative appendix) Vector 14 for three-phase line test Appendix D (informative appendix) Test equipment 18 Appendix E (informative appendix) Sag immunity test for high-current equipment 20 References 22 Figure 1 Voltage sag ---70% voltage sag sine wave waveform Figure 5 Figure 2 Voltage change 5 Figure 3a) Three-phase system phase-to-neutral test 8 Figure 3b) Three-phase system phase-to-phase test---acceptable phase shift method 1 9 Figure 3c) Phase-to-phase test of a three-phase system---acceptable phase shift method 2 9 Figure 3d) Unacceptable method---phase wire to phase wire no phase shift test 9 Figure A.1 Circuit for determining the peak impulse current drive capability of the generator 12 Figure C.1 The voltage sag vector of the phase line to the neutral line Figure 14 Figure C.2 Acceptable method 1-Phase-to-phase voltage sag vector diagram 15 Figure C.3 Acceptable method 2-Phase-to-phase voltage sag vector diagram 17 Figure D.1 Schematic diagram of voltage sag and short-term interruption using a test instrument with a tapped transformer and switch 18 Figure D.2 Use the test equipment in Figure D.1 to generate the acceptable method 1 vector 19 shown in Figure C.1, Figure C.2 and Figure 3b) Figure D.3 The principle diagram of a three-phase voltage sag, short-term interruption and voltage change test instrument using a power amplifier 19 Table 1 Priority test grade and duration for voltage sag test 4 Table 2 Priority test levels and duration of short-term interruption test 4 Table 3 Time setting of short-term power supply voltage change 5 Table 4 Generator specification 6 Table A.1 Minimum peak impulse current capability 11 Table C.1 The vector value of the voltage sag of the phase line to the neutral line 14 Table C.2 Acceptable method 1-vector value of phase-to-phase voltage sag 16 Table C.3 Acceptable method 2-Vector value of phase-to-phase voltage sag 17 Electromagnetic compatibility test and measurement technology main power supply Voltage sag of equipment with current per phase greater than 16A, Short-term interruption and voltage change immunity test1 ScopeThis part specifies the immunity test of electrical and electronic equipment connected to the low-voltage power supply network against voltage sags, short-term interruptions and voltage changes Method and preferred range of test levels. This section applies to electrical and electronic equipment with a rated current of more than 16A per phase of the main power supply (electrical and electronic equipment with a rated current of more than.200A per phase). See Appendix E) for guidelines for electronic devices. This part is applicable to 50Hz or 60Hz AC installed in residential and industrial areas Single-phase and three-phase equipment where voltage sags and short-term interruptions may occur in the network. Note 1.Refer to GB/T 17626.11 for the requirements of equipment with the rated current of each phase of the main power supply not greater than 16A. Note 2.This section does not specify the upper limit of the rated input current. However, in some countries, there are mandatory safety standards, so each phase of a certain main power supply is regulated. The upper limit of constant current, such as 75A or 250A. This section does not apply to electrical and electronic equipment connected to a 400Hz AC network. Tests of devices connected to these networks will be It will be covered in future standards. The purpose of this section is to establish an evaluation of the immunity of electrical and electronic equipment when subjected to voltage sags, short-term interruptions and voltage changes. General guidelines. Note 1.For voltage fluctuation test, see GB/T 17626.14. Note 2.For the equipment under test with a rated current greater than 250A, it may be difficult to obtain suitable test equipment. In this case, general standards, product standards The professional committees of product standards and product standards should carefully evaluate the applicability of this section. This section can also be used as a performance negotiated between the manufacturer and the purchaser. The framework of the criterion. The test methods specified in this section are methods for evaluating the immunity of equipment or systems to defined electromagnetic phenomena. This part It is part of the basic electromagnetic compatibility standard. The professional standardization technical committee is responsible for determining whether this immunity test standard is applicable. If applicable, It is responsible for determining the appropriate test level and performance criteria. The Electromagnetic Compatibility Standardization Technical Committee and its sub-committees prepare to The technical committee of Zhunhua cooperated to evaluate the specific immunity test value for its products.2 Normative referencesThe 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 reference documents, the latest version (including all amendments) is applicable to this document. GB/T 4365 Electrotechnical terminology electromagnetic compatibility (GB/T 4365-2003, IEC 60050(161)..1990, IDT) GB /Z 18039.7 Voltage sag, short-term interruption and measurement statistics in public power supply system in electromagnetic compatibility environment (GB /Z 18039.7-2011,IEC /T R61000-2-8.2002,IDT) IEC 61000-4-30 Electromagnetic Compatibility (EMC) Part 4-30.Test and Measurement Technology Power Quality Measurement Method (Electro- magneticcompatibility (EMC)-Part 4-30.Testingand measurementtechniques-Powerquality measurementmethods)3 Terms and definitionsThe following terms and definitions defined in GB/T 4365 apply to this document. 3.1 Basic EMC standard basicEMCstandard Standards for general and basic conditions or rules given to achieve electromagnetic compatibility, which are related to all products and systems, or applicable It applies to all products and systems, and can be used as a reference document for relevant professional standardization technical committees. 3.2 Immunity (toadisturbance) The ability of a device, equipment or system to face electromagnetic disturbance without degrading its operating performance. [GB/T 4365-2003,161-01-20] 3.3 Voltage dip voltagedip The voltage at a certain point of the electrical power supply system suddenly drops below the specified sag threshold, and then recovers after a short interval To normal value. Note 1.A typical sag is related to the occurrence and termination of a short circuit, or is related to a sharp increase in current on the system or system connected to the device. Note 2.Voltage sag is a two-dimensional electromagnetic disturbance, and its level is determined by voltage and time (duration). 3.4 Shortinterruption The voltage of all phases at a certain point of the power supply system suddenly drops below the prescribed interruption threshold, and then recovers after a short interval To normal value. Note. A typical short-term interruption is related to the action of the switching device, which is caused by the occurrence and end of a short circuit on the system or system connected devices. 3.5 (Voltage dip) residual voltage residualvoltage(ofvoltagedip) The minimum voltage root mean square value recorded during a voltage dip or short interruption. Note. The remaining voltage can be expressed as a value in volts or as a percentage relative to the reference voltage or a reference voltage as a unit Value. 3.6 Malfunction The ability of the device to perform a predetermined function is terminated, or the device performs an unscheduled function. 3.7 Calibration Under specified conditions, a set of operations to establish the relationship between the marked value and the measurement result according to the reference standard. Note 1.This term is based on the "uncertainty" method. Note 2.In principle, the relationship between the marked value and the measurement result can be represented by a calibration chart. [GB/T 2900.77-2008,311-01-09] 3.8 Verification Used to check test equipment systems (for example, test signal generators and interconnecting cables), in order to verify that the test system functions in compliance with Chapter 6 A set of operations performed based on a set specification. Note 1.The calibration method may be different from the calibration method. Note 2.The verification process in 6.1.2 is a guide to ensure the correct operation of the test generator, and the other clauses are to specify the test configuration to ensure that the expected test waveform is transmitted. Sent to the device under test. Note 3.This definition applies to this basic electromagnetic compatibility standard, and is different from the definition specified in GB/T 2900.77.4 overviewElectrical and electronic equipment may be affected by voltage sags, short-term interruptions or voltage changes of the power supply. Voltage sags and short-term interruptions are caused by grid faults, severe short-circuits of the device (see GB /Z 18039.7), or sudden large loads Caused by changes. In some cases, there may be two or more consecutive dips or interruptions. The voltage change is caused by connecting to the grid Caused by the continuously changing load. The voltage sag on the equipment side is affected by the way the transformer is connected between the fault point of the power supply system and the equipment connection point. Transformer connection The connection method will affect the voltage sag amplitude and phase relationship experienced by the equipment. These phenomena are random in nature. In order to simulate in the laboratory, the deviation and duration of the rated voltage can be used to minimize Express its characteristics to a degree. Therefore, different types of tests are specified in this section to simulate the effect of sudden voltage changes. In product specifications or related professional standardization techniques Within the scope of the technical committee’s responsibility, these tests are only used in special and deemed reasonable situations. The responsibility of the relevant professional standardization technical committee is to determine which phenomena are related to the phenomena considered in this section, and to determine the test Applicability.5 Test levelThe voltage in this section uses the rated voltage of the equipment as the reference (UT) for the voltage test level specification. The rated voltage range of the equipment here adopts the following regulations. ---If the range of the rated voltage does not exceed 20% of the voltage value at the low end, a voltage can be specified within the rated voltage range. It is the benchmark of the test level (UT); --- In all other cases, the test process should use the lowest and highest voltage within the defined voltage range; --- Refer to GB /Z 18039.7 for the selection of test level and duration. 5.1 Voltage dips and short interruptions The change between UT and the changed voltage occurs suddenly. Unless otherwise specified by the responsible product committee, voltage sags and voltage The start and stop phase angles of the short-term interruption should be 0° (for example, the sag phase is at the positive zero-crossing point of the voltage), see 8.2.1.Use the following voltage test Inspection level (expressed in %UT). 0%, 40%, 70%, 80%, and the remaining voltage after the corresponding dip is 0%, 40%, and 70%, 80%. For voltage sags, the preferred test level and duration are shown in Table 1, and an example is shown in Figure 1. For short-term interruption, the priority test level and duration are shown in Table 2. The preferred test levels and duration given in Table 1 and Table 2 take into account the information given in GB /Z 18039.7. The severity of the preferred test levels listed in Table 1 is appropriate. It represents the sag characteristics under actual conditions, but it is not It means that the immunity is guaranteed to meet all sags. More severe test levels, such as 0%, lasting 1s and balanced three-phase dips, are related The standardization technical committee may be under consideration. Table 4 shows the rise time tr and fall time tf of the voltage during the sudden change. The test level and duration should be given by the product specification. A test level of 0% is equivalent to a complete voltage interruption. In fact, the rated voltage The voltage test level of UT from 0% to 20% can be considered as a complete interruption. ---The root mean square value of the generator's output voltage should be monitored every 0.5 cycles during the test, and it should be kept in regulation throughout the test period. Within a certain percentage. Note. If the peak current of the device is small enough not to affect the output voltage of the generator, it is not necessary to monitor the output voltage of the generator during the test. The rise time and fall time as well as overshoot and undershoot should be at the phase angles of 90° and 270°, from 0% to 100%, 100% to 80%, 100% to 70%, 100% to 40% and 100% to 0%, switch verification. The accuracy of the phase angle should be performed on 9 phase angles from 0° to 315° in 45° increments, from 0% to 100% and 100% to 0% Switch verification. And at the phase angles of 90° and 180°, from 100% to 80% and 80% to 100%, from 100% to 70% and 70% to 100%, as well as 100% to 40% and 40% to 100%, perform switching verification. 6.2 Power supply The frequency of the test voltage should be within ±2% of the rated frequency.7 Test setupUse the shortest power cable specified by the manufacturer of the equipment under test to connect the equipment under test to the test generator for the test. If there is no electricity The cable length requirement should be the shortest cable suitable for the equipment under test. This section describes the test configuration for three types of phenomena. ---Voltage sag; ---Short interruption; ---There is a gradual voltage change between the rated voltage and the variable voltage (optional). See Appendix D for an example of the test layout.8 Test procedureCare should be taken during trial preparation and implementation. The equipment under test and the test equipment shall not be dangerous or fail due to the application of this part of the test. Safety. Precautions should be taken to avoid dangerous or unsafe conditions for personnel, equipment under test and test equipment. For a given device under test, a test plan should be prepared before the start of the test. The test plan should represent the method that the system is expected to use. It is necessary to make a correct estimation of the system to determine which configuration of the system under test can reflect the on-site situation. The test situation must be explained and explained in the test report. It is recommended that the pilot plan include the following items. ---The type of equipment under test; --- Information about connections (plugs, terminals, etc.) and corresponding cables and auxiliary equipment; ---The input power port of the device under test; ---Information about equipment impulse current requirements; ---The typical operating mode of the equipment under test when doing the test; ---Performance criteria adopted and defined in technical specifications; ---The operating mode of the equipment; ---Description of the test arrangement. If there is no signal source for the actual operation of the device under test, it can be simulated. For each test, any performance degradation should be recorded. The monitoring equipment should be able to display the operation of the equipment under test during and after the test. Line status. After each set of tests, all functions of the tested equipment should be checked. 8.1 Laboratory reference conditions 8.1.1 Climatic conditions Unless otherwise specified by the relevant professional standards committee responsible for general standards or product standards, the climatic conditions of the laboratory shall meet the requirements of the Test equipment operation and any restrictions specified by the test equipment manufacturer. If the relative humidity is too high to cause condensation on the test equipment or test equipment, the test cannot be performed. Note. If there is sufficient evidence to prove that the climatic conditions have an impact on the phenomena covered by this section, the standardization technical committee responsible for this section should be triggered. Will pay attention. 8.1.2 Electromagnetic conditions The electromagnetic conditions of the laboratory should be able to ensure the normal operation of the equipment under test, so that the test results are not affected. 8.2 Implementation of the test During the test, the power supply voltage of the monitoring test should be within 2% accuracy. 8.2.1 Voltage dips and short interruptions The equipment under test shall be subjected to three descent or interruption tests in sequence according to each selected test level and duration combination, with a minimum interval 10s (interval between two tests) should be tested in each typical working mode. For voltage sags, the change in power supply voltage should occur at 0° (that is, the zero crossing of the voltage in the positive direction). The relevant professional standardization technical committee or Individual product specifications can add phases that are considered necessary, and each phase preferentially selects 45°, 90°, 135°, 180°, 225°, 270° and 315°. For short-term interruptions, the relevant professional standardization technical committee shall specify the starting angle according to the worst case. If there are no regulations, build It is recommended to choose one phase and test at a phase angle of 0°. For the short-term interruption test of the three-phase system, according to 5.1, the three phases are tested at the same time. For the voltage sag test of a single-phase system, the voltage should be tested in accordance with the requirements of 5.1, w......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 17626.34-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 17626.34-2012_English as soon as possible, and keep you informed of the progress. 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