GB/T 7676.9-2017 English PDFUS$1959.00 ยท In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 7676.9-2017: Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 9: Recommended test methods Status: Valid GB/T 7676.9: Historical versions
Basic dataStandard ID: GB/T 7676.9-2017 (GB/T7676.9-2017)Description (Translated English): Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 9: Recommended test methods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: N21 Classification of International Standard: 17.220.20 Word Count Estimation: 98,953 Date of Issue: 2017-09-07 Date of Implementation: 2018-04-01 Older Standard (superseded by this standard): GB/T 7676.9-1998 Quoted Standard: GB/T 2423.4-2008; GB/T 2423.5-1995; GB/T 2423.6-1995; GB/T 2423.10-2008; GB/T 2423.24-2013; GB/T 2423.55-2006; GB/T 4208-2017; GB/T 5169.11-2006; GB/T 7676.1-2017; GB/T 7676.2-2017; GB/T 7676.9-2017; GB/T 7676.3-2017; GB/T 7676.4-2017; GB/T 7676.5-2017 Regulation (derived from): National Standard Notice 2017 No. 22 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 direct effects of analog electrical measuring instruments and their annex to the general test conditions and test methods. In order to make testing simpler and/or more accurate, these recommended test methods do not restrict the use of special test methods and/or special test equipment. This section applies to direct measurement of electrical instructions indicate the role of instrumentation, such as: 1. Ammeter and voltmeter; 2. Power meter and reactive power meter; 3. Pointer and vibrating frequency meter; 4. Phase meter, power Factor meter and synchronization indicator; 5. Resistance meter (impedance meter) and conductance meter; 6. Multifunction meter of the above form. This section also applies to certain limited interchangeable accessories or interchangeable accessories used with these instruments, such as: 1. Shunt; 2. series resistors and resistors; 3. Huo GB/T 7676.9-2017: Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 9: Recommended test methods---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. Direct acting indicating analogue electrical measuring instruments and their accessories. Part 9. Recommended test methods ICS 17.220.20 N21 National Standards of People's Republic of China Replacing GB/T 7676.9-1998 Direct acting analogue indicating electrical measuring instruments and their accessories Section 9. Recommended test methods theiraccessories-Part 9.Recommendedtestmethods 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword V. 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 General test conditions 2 4.1 Overview 2 4.2 reference conditions 2 Parallax 2 4.4 Tap 2 4.5 Thermal stability 3 4.6 Pretreatment time 3 4.7 mechanical zero adjustment 3 4.8 electric zero adjustment 3 4.9 Test Equipment Uncertainty 3 4.10 reading method 3 4.11 multi-phase test 3 4.12 AC instrument DC test 3 4.13 multi-measuring range and multi-function test instrument 3 4.14 test lead 3 4.15 resistance test table 3 5 Basic Uncertainty Test 3 5.1 Test conditions 3 5.2 ammeter and voltmeter 3 5.3 Power Meter and Reactive Power Meter 5 5.4 Analog Frequency Table 6 5.5 spring-loaded frequency table 6 5.6 Phase Table 7 5.7 Power Factor Table 8 5.8 synchronization indicator 9 5.9 resistance meter (impedance meter), conductivity meter 9 5.10 interchangeable shunt 10 5.11 Interchangeable series resistor (resistor) 13 5.12 Interchangeable Hall Current Sensor 13 5.13 interchangeable Hall voltage sensor 14 5.14 other interchangeable electronic converter 14 6 changes in the amount of test 16 6.1 The amount of change caused by ferromagnetic stents 16 6.2 Changes caused by ambient temperature 17 6.3 humidity-induced changes in the amount of test 22 6.4 Position-induced changes 23 6.5 changes caused by the external magnetic field 24 6.6 The amount of change caused by the DC ripple being measured 25 6.7 AC Distortion caused by measurement changes 26 6.8 AC variation measured due to crest factor 28 6.9 The amount of change caused by the frequency of the measured exchange 29 6.10 The amount of change caused by AC voltage/current components being measured 33 6.11 Changes in Power Factor 41 6.12 Battery voltage changes caused by change 43 6.13 Change caused by unbalanced current 44 6.14 conductive stent caused by the change 45 6.15 Changes caused by external electric field 45 6.16 Voltage and power factor effects caused by changes in volume 46 6.17 Multiphase instrument and transducer changes in the measurement of different components caused by the interaction between 47 6.18 Auxiliary power supply voltage changes caused by 48 6.19 Auxiliary power frequency changes caused by 49 6.20 Self-heating caused by the change 49 6.21 Shunt thermoelectric potential impact test 50 6.22 Open Loop Hall Sensor Hysteresis Changes 50 7 Electromagnetic compatibility test 51 7.1 Electrostatic discharge immunity test 51 7.2 RF electromagnetic field radiation immunity test 51 Electrical fast transient burst immunity test 7.4 Conducted disturbances of RF field immunity immunity test 53 7.5 Surge immunity test 53 7.6 ringing wave immunity test 54 8 other tests 54 8.1 Marking and appearance inspection 54 8.2 anti-contact seal test 55 8.3 Terminal Inspection 55 8.4 overshoot test 55 8.5 Response Time Trial 56 8.6 Mechanical zero (or range regulator) adjustment test 56 8.7 deviation from zero test 57 8.8 Zero Stability Test 57 8.9 Power meter and reactive power meter or its converter is only on the voltage line power test 58 8.10 Resistance table (impedance meter) maximum current test 58 8.11 Stop and limit test 59 8.12 Synchronization indicator frequency drop test 59 8.13 Synchronization indicator frequency drag test 60 8.14 Synchronization indicator open test 60 8.15 AC voltage test and accessible parts test 8.16 Test with external circuit connection 61 8.17 Test for connection to the mains supply 61 8.18 Anti-shock structure requirements test 61 8.19 Assessment of battery requirements 61 8.20 Solar Radiation Test (for Group C meters) 61 8.21 instrument short-term overload test 62 8.22 Annex Short-term overload test 62 8.23 Continuous overload test 62 8.24 current circuit after high current overload does not open 63 8.25 Vibration and Shock Tests 63 8.26 Vibration and Resistant to Bump (Impact) Test 65 8.27 resistance to mechanical stress test 66 8.28 temperature limit test 67 8.29 alternating hot and humid test 67 8.30 heat and flame retardant test 68 8.31 Shell protective ability test 68 8.32 Marking characteristics test 69 8.33 Uniformity Uncertainty Test 69 9 Test conditions and test items and technical terms of correspondence 70 Appendix A (informative) test conditions and test items and technical requirements of the correspondence between the provisions of 71 Appendix B (informative) Major technical changes compared to the previous version 77 Figure 1 DC high-power power supply stability test circuit 11 Figure 2 Shuangbiao bridge test shunt resistance of the circuit diagram 12 Figure 3 Duty Cycle Schematic 28 Table A.1 Test conditions and test items and the corresponding technical terms of each part of the index 71 ForewordGB/T 7676 "Direct-acting analog indicator electrical measuring instruments and their attachments" consists of the following 9 parts. --- Part 1. Definition and general requirements; --- Part 2. Ammeter and voltmeter special requirements; --- Part 3. Power meter and reactive power meter special requirements; --- Part 4. Frequency table special requirements; --- Part 5. Phase table, power factor meter and synchronization indicator of the special requirements; --- Part 6. Resistance table (impedance meter) and the specific requirements of the conductance table; --- Part 7. Multi-functional instrument of the special requirements; --- Part 8. Specific requirements of annexes; --- Part 9. Recommended test methods. This section GB/T 7676 Part 9. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 7676.9-1998 "direct acting analogue electrical measuring instruments and their Annex Section 9. Recommended test method". This section compared with the GB/T 7676.9-1998, a larger change, adjust the standard structure, modify a number of terms, the specific changes in parameters See Appendix B. Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This part is proposed by China Machinery Industry Federation. This part of the National Electrical Instrumentation Standardization Technical Committee (SAC/TC104) centralized. This part of the main drafting unit. Harbin Institute of Electrical Instrumentation, Shanghai Ying Fu Te Electronic Technology Co., Ltd., State Grid Jiangxi Electric Power Division of Electric Power Research Institute, State Grid Hubei Electric Power Company Electric Power Research Institute, National Electrical Instrumentation Quality Supervision and Inspection Center, Beijing Automation Control Equipment Factory, Shenzhen Xinglong Technology Co., Ltd., Zhejiang Chint Instrument Co., Ltd., Zhejiang Dixon Electric has Limited, State Grid Hunan Electric Power Company Electric Power Research Institute, Delixi Group Instrument Co., Ltd., Henan Provincial Power Company Electric Power Branch Institute of Science and Technology, Measurement Center of Hebei Electric Power Co., Ltd., Shanghai Kang Beili Instrument Co., Ltd., Shandong Institute of Metrology, State Grid Beijing Power Company, Shenzhen Youxinda Technology Co., Ltd., Zhejiang Institute of Metrology, Zhongnan Instrument Co., Ltd., State Grid Chongqing Electric Power Company Electric Power Research Institute, Shanghai Institute of Measurement and Testing Technology, Henan Institute of Metrology, State Grid Sichuan Electric Power Company measurement Center, Holley Technology Co., Ltd., Xi'an Kai Yi Electronic Technology Co., Ltd. gold. The main drafters of this section. Xue Dejin, Shen Li, Pei Maolin, Liu Xiancheng, Jin Shaoping, Chen Bo, Qin Guoxin, Li Ji, Ding Zhen, Chen Wenxin, Yuan Huizhi, Liu Pei, Cai Yi, Liu Xun, Zheng Yuanbao, Huang Jianzhong, Guo Xiaoguang, Cui Tao, Wang Weinen, Bai Taizhong, Huang Jianzhong, Gan Yiyi, Zhou Lixia, Li Rongping, Zheng Mengxia, Lin Xiaolong, Liu Dan, Liu Furuo, Zhao Jinjin, Huo Jianhua, Lai Lei, Wang Nianli, Fengxueli, Shao Fengyun, Hou Xingzhe, Wang Sanqiang, Wu Weide, Zhao Duo, Li Daomin, Wang Xinjun, had Shi Tu, Bi Wei, Chen Naien. This part replaces the standards previously issued as. --- GB/T 7676.9-1987, GB/T 7676.9-1998. Direct acting analogue indicating electrical measuring instruments and their accessories Section 9. Recommended test methods1 ScopeGB/T 7676 provisions of this part of the direct effect of analog electrical measuring instruments and their annex to the general test conditions and test methods. To make testing simpler and/or more accurate, these recommended test methods do not limit the use of special test methods and/or special tests Test device. This section applies to the direct effect of analog instructions indicating the electrical instrumentation, such as. --- ammeter and voltmeter; --- Power meter and reactive power meter; --- Pointer and vibrating frequency meter; --- Phase meter, power factor meter and synchronization indicator; --- Resistance meter (impedance meter) and conductance table; --- The form of multi-function instrument. This section also applies to certain limited interchangeable accessories or interchangeable accessories for use with these meters, for example. --- Splitter; --- Series resistors and resistors; --- Hall current sensor; --- Hall voltage sensor; --- Electronic converter.2 Normative referencesThe 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. GB/T 2423.4-2008 Environmental testing for electric and electronic products Part 2. Test methods Test Db. Alternating hot and humid (12h 12h cycle) test GB/T 2423.5-1995 Environmental testing for electric and electronic products Part 2. Test methods Test Ea and guidelines Impact GB/T 2423.6-1995 Environmental testing for electric and electronic products Part 2. Test methods Test Eb and guidelines Collision GB/T 2423.10-2008 Environmental testing for electric and electronic products Part 2. Test methods Test Fc. Vibration (sinusoidal) GB/T 2423.24-2013 Environmental testing for electric and electronic products Part 2. Test methods Test Sa. Analog on the ground too Yang radiation and its test guideline GB/T 2423.55-2006 Environmental testing for electric and electronic products Part 2. Test methods Test Eh. Hammer test GB/T 4208-2017 enclosure rating (IP code) GB/T 5169.11-2006 Fire hazard testing for electric and electronic products Part 11 - Glow/hot wire basic test methods into Glowing wire flammability test methods GB/T 7676.1-2017 Direct acting analogue indicating electrical measuring instruments and their accessories Part 1. Definitions and general requirements GB/T 7676.2-2017 Direct acting analogue indicating electrical measuring instruments and their accessories Part 2. Ammeter and voltmeter special Special requirements ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7676.9-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 7676.9-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 10 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 7676.9-2017_English with my colleagues?Answer: Yes. 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