GB/T 7676.8-2017 English PDFUS$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 7676.8-2017: Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 8: Special requirements for accessories Status: Valid GB/T 7676.8: Historical versions
Basic dataStandard ID: GB/T 7676.8-2017 (GB/T7676.8-2017)Description (Translated English): Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 8: Special requirements for accessories Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: N21 Word Count Estimation: 21,276 Date of Issue: 2017-09-07 Date of Implementation: 2018-04-01 Older Standard (superseded by this standard): GB/T 7676.8-1998 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of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 7676.8-2017: Direct acting indicating analogue electrical measuring instruments and their accessories -- Part 8: Special requirements for accessories---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 8. Special requirements for accessories ICS 17.220.20 N21 National Standards of People's Republic of China Replacing GB/T 7676.8-1998 Direct acting analogue indicating electrical measuring instruments and their accessories Part 8. Specific requirements for attachments theiraccessories-Part 8.Specialrequirementsforaccessories 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 Ⅲ Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Classification, grading and compliance 1 5 technical requirements 3 6 information, signs and symbols 12 7 Packaging and storage 13 Inspection rules 13 Appendix A (Normative) Pilot Project 14 Appendix B (informative) Major technical changes compared with the previous version 16 Table 1 test conditions related to the impact of the reference conditions and allowable deviation 4 Table 2 Nominal use of the limits and allow the amount of change 5 Table 3 short-term overload 7 Table A.1 Pilot project 14 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 8. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 7676.8-1998 "Direct acting analogue electrical measuring instruments and their accessories Part 8. Annex special Claim". And GB/T 7676.8-1998 compared to the larger changes. Adjustment of the standard structure, modify a number of terms, specific changes see attached Record 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. The main drafting unit of this section. State Grid Jiangxi Electric Power Company Electric Power Research Institute, Shanghai Ying Fu Te Electronic Technology Co., Ltd., Haar Bin Electrical Instrument Institute, Beijing Automation Control Equipment Factory, Shenzhen Xinglong Technology Co., Ltd., Zhejiang Chint Instruments limited liability Company, Zhejiang Dixon Electric Co., Ltd., Delixi Group Instrument Co., Ltd., Henan Electric Power Company Electric Power Research Institute, Hebei Power Co., Ltd. Measurement Center, Shenzhen Friends of the Technology Co., Ltd., State Grid Hunan Electric Power Company Electric Power Research Institute, Shanghai Kang Billy Instrument Co., Ltd., Shandong Institute of Metrology, National Instruments instrumentation Quality Supervision and Inspection Center, Shenzhen Friends of the technology shares Co., Ltd., Zhejiang Institute of Metrology, State Grid Beijing Electric Power Company, South Instrument Co., Ltd., State Grid Chongqing Electric Power Company Power Science Research Institute, Shanghai Institute of Measurement and Testing Technology, State Grid Hubei Electric Power Company Electric Power Research Institute, Henan Institute of Metrology Institute, the State Grid Sichuan Electric Power Company Measurement Center, Holley Technology Co., Ltd., Xi'an Kai Yi Jin Electronic Technology Co., The main drafters of this section. Xue Dejin, Pei Maolin, Jin Shaoping, Chen Bo, Qin Guoxin, Liu Xiancheng, Shen Li, Ding Zhen, Chen Wenxin, Yuan Huizhi, Liu Pei, Cai Yi, Liu Yong, Zheng Yuanbao, Huang Jianzhong, Guo Xiaoguang, Cui Tao, Wang Weilian, Bai Tai, Li Ji, 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, Wu Weide, Wang Sanqiang, Zhao Duo, Li Daomin, Wang Xinjun, had Shi Tu, Bi Wei, Chen Naien. This part replaces the standards previously issued as. --- GB/T 7676.8-1987, GB/T 7676.8-1998.IntroductionThe original GB/T 7676-1998 is equivalent to using IEC 60051. The main technical content of the standard still reflects the level of 40 years ago. The twentieth and twenty-first century can be said that technology is changing with each passing day, is the era of rapid development of electronic technology and information explosion. Now simulation Instrumentation is no longer the world of electromechanical instruments, most of the power can be converted by electronic converters into DC voltage or current, and then Magnetoelectric instrumentation to indicate the corresponding power; even the expansion of the limit device is no longer a shunt, the world of resistors. Hall on many occasions Sensors have the obvious advantage over current dividers that Hall current sensors can be replaced without breaking the current loop; Hall sensing The instrument can measure both direct current and alternating current; electronic amplifiers can further expand the measurement range of small currents. general Case, the electronic converter to measure frequency, power, reactive power, phase and power factor and other power, the structure is simple, need to use the mold, tooling Compared with the electromechanical simulation table is much less, the new product development time is much shorter, research and development costs are very low, the advantage is obvious, so can Interchangeable or Limited Interchangeable or Non-Interchangeable Frequency, Power, Reactive Power, Phase and Power Factor Electronic Transducers In today's analog meters Is already a very common phenomenon. Today's analog indicator meter's accessory standard can no longer ignore this type of electronic converter. Of course, electricity The emergence of sub-converter has brought a lot of new situations, such as the impact of waveform distortion, electromagnetic compatibility and so on. For this reason, this revision of this section is a technical revision, adding many new forms of attachment, such as various electronic converters and Hall sensing And so on. Due to the extensive use of electronic components, the issue of electromagnetic compatibility is highlighted and this revision of this Part is added in the chapter "Electrical Requirements" Added electromagnetic compatibility requirements. In the "electrical requirements" to take into account all access to high overload current transformer accessories and current measurement range Wai limit 1A ~ 10A accessories have to bear the problem of high current, an increase of the current line does not open the technical requirements. This is both electricity Requirements are also safety requirements. Because the shunt has the influence of thermopower, the open-loop Hall current sensor has the hysteresis effect, so this section increases the shunt by the heat The amount of change due to potential and the amount of change caused by hysteresis in the open-loop Hall-effect current sensor. Due to the electronic device has a certain zero drift, this section is also very concerned about this, put forward the technical requirements of zero stability. In view of this, the revised part of this version compared with the previous version to better reflect the current level of technology and technology development. Direct acting analogue indicating electrical measuring instruments and their accessories Part 8. Specific requirements for attachments1 ScopeGB/T 7676 provisions of this part of the classification, classification and compliance, technical requirements, information, signs and symbols, packaging and storage As well as inspection rules. This section applies to the following direct effects analog electrical measuring instruments annex. --- Splitter; --- Series resistors and resistors; --- Hall current sensor; --- Hall voltage sensor; --- Electronic converter. This section does not apply to the corresponding provisions of the corresponding national standards used as an attachment special purpose device.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 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 GB/T 7676.3-2017 Direct acting analogue indicating electrical measuring instruments and their accessories Part 3. Power meter and reactive power meter Special requirements GB/T 7676.4-2017 Direct acting analogue indicating electrical measuring instruments and their accessories - Part 4. Particular requirements for frequency tables GB/T 7676.5-2017 Direct acting analogue indicating electrical measuring instruments and their accessories Part 5. Phase meter, power factor meter and Synchronous indicator of the special requirements GB/T 7676.9-2017 Direct acting analogue indicating electrical measuring instruments and their accessories Part 9. Recommended test methods Instrumentation transformers - Part 2. Additional requirements for current transformers (Instrumenttransformers - Part 2.Additionalrequirementsforcurrenttransformers)3 Terms and definitionsGB/T 7676.1-2017 defined terms and definitions apply to this document. 4 Classification, grading and compliance 4.1 Classification 4.1.1 According to the nature of the annex is divided into. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7676.8-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 7676.8-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 7676.8-2017_English with my colleagues?Answer: Yes. 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