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JJF 1779-2019 English PDF

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JJF 1779-2019: Program of Pattern Evaluation of Electricity Meters for Direct Current Energy
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Basic data

Standard ID JJF 1779-2019 (JJF1779-2019)
Description (Translated English) Program of Pattern Evaluation of Electricity Meters for Direct Current Energy
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 83,812
Date of Issue 2019
Date of Implementation 2020-03-31
Issuing agency(ies) State Administration for Market Regulation

JJF 1779-2019: Program of Pattern Evaluation of Electricity Meters for Direct Current Energy

---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.
(Outline of Type Evaluation of Electronic DC Electric Energy Meter) National Measurement Technical Specification of the People's Republic of China Outline of Type Evaluation of Electronic DC Electric Energy Meter Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Outline of Type Evaluation of Electronic DC Electric Energy Meter Centralized unit. National Electromagnetic Measurement Technical Committee Main drafting unit. Hunan Institute of Metrology and Testing Changsha Tianheng Measurement and Control Technology Co., Ltd. Participated in the drafting unit. Henan Institute of Metrology Huaihua Jiannan Machine Factory Co., Ltd. Zhejiang Zhengtai Instruments Co., Ltd. This outline entrusts the National Electromagnetic Measurement Technical Committee to interpret The main drafters of this specification. Xie Xiaojun (Hunan Provincial Institute of Metrology and Testing) Qingqing Li (Hunan Institute of Metrology and Testing) Zhou Xinhua (Changsha Tianheng Measurement and Control Technology Co., Ltd.) Participating drafters. Li Hua (Hunan Provincial Institute of Metrology and Testing) Liu Pei (Henan Institute of Metrology) Shi Jianjun (Huaihua Jiannan Machine Factory Co., Ltd.) Feng Xueli (Zhejiang Zhengtai Instruments Co., Ltd.)

table of Contents

Introduction (Ⅲ) 1 Scope (1) 2 References (1) 3 Terms and definitions (2) 4 Overview (2) 5 Legal management requirements (4) 5.1 Unit of measurement (4) 5.2 Accuracy level requirements (4) 5.3 Requirements for measurement legal signs and measurement appliance labels (4) 5.4 External structure design requirements (5) 5.5 Installation mark requirements (5) 6 Measurement requirements (5) 6.1 Basic error (5) 6.2 Initial start (7) 6.3 Starting (7) 6.4 Stealth (7) 6.5 Electric energy meter constant (8) 6.6 Clock accuracy(8) 6.7 Change of error caused by influence quantity (8) 7 General technical requirements (9) 7.1 Mechanical and structural requirements (9) 7.2 Climatic conditions (14) 7.3 Electrical requirements (15) 7.4 Electromagnetic compatibility (EMC) (18) 8 Type evaluation item list (21) 9 Provide technical documents and test prototypes for review (23) 9.1 Technical information submitted by the applicant (23) 9.2 Test prototype (23) 10 Type evaluation conditions and methods (23) 10.1 Measurement requirements (23) 10.2 Mechanical requirements (27) 10.3 Climatic conditions (31) 10.4 Electrical requirements (33) 10.5 Electromagnetic Compatibility (EMC) (39) 11 Table of measuring instruments and equipment used in the test project (46) Appendix A Type Evaluation Record Format (49) Appendix B Type Evaluation Report Format (69) Appendix C Format of "Description" for Type Evaluation Preservation Prototype (74) Appendix D. Test voltage waveforms affected by voltage sags and short interruptions (75)

Introduction

This outline is based on the national measurement technical specification JJF 1015-2014 "General Specification for Type Evaluation of Measuring Instruments", JJF 1016-2014 "Guidelines for the Compilation of Outlines of Measuring Apparatus Type Evaluation", JJF 1001 "General Terms and Definitions of Measurement" The requirements are compiled. This outline 7.1.6 "Electrical Clearance and Creepage Distance" adopts IEC 61010-1.2010 "Measurement, Control and Safety requirements for electrical equipment used in laboratories. Part 1.General Requirements electricalequipmentformeasurement,control,andlaboratoryuse-Part 1.General requirements) in Table 3, Table K.4 and 6.7.1.3. This outline is published for the first time. Outline of Type Evaluation of Electronic DC Electric Energy Meter

1 Scope

This outline is applicable to the 0.2, 0.5, 1 and 2 electronic models with the classification code of measuring instruments 15262500 (Static) Type evaluation of DC energy meters. This outline does not apply to the following situations. ---Electronic DC energy meter with reference voltage exceeding 1000V; ---DC standard electric energy meter; ---Car electronic DC electric energy meter.

2 Reference documents

The outline cited the following documents. JJG842-2017 electronic DC electric energy meter GB/T 2423.1-2008 Environmental testing for electrical and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2-2008 Environmental testing for electrical and electronic products Part 2.Test methods Test B. high temperature GB/T 2423.4-2008 Environmental testing for electrical and electronic products. Part 2.Test method test Db. Alternating damp heat (12h 12h cycle) GB/T 2423.5-2019 Environmental Test Part 2.Test Method Test Ea and Guide. Impact GB/T 2423.10-2008 Environmental testing for electrical and electronic products. Part 2.Test methods Test Fc. Vibration (sine) GB/T 2423.24-2013 Environmental Test Part 2.Test Method Test Sa. Simulate Ground Solar radiation and its test guidelines GB/T 2423.55-2006 Environmental testing for electrical and electronic products. Part 2.Environmental testing Eh. Hammer test GB/T 4208-2017 enclosure protection level (IP code) GB/T 5169.11-2017 Fire hazard testing for electrical and electronic products. Part 11.Glow wire/hot wire base Glow wire flammability test method for finished products of this test method (GWEPT) GB/T 16935.1-2008 Insulation coordination of equipment in low-voltage systems Part 1.Principles, requirements and test GB/T 17626.2-2018 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test GB/T 17626.3-2019 electromagnetic compatibility test and measurement technology RF electromagnetic field radiation immunity test GB/T 17626.4-2018 electromagnetic compatibility test and measurement technology electrical fast transient burst immunity test GB/T 17626.5-2019 EMC test and measurement technology surge (shock) immunity test

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