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JJG 1186-2022 English PDF

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JJG 1186-2022: Verification Equipment for DC Electrical Energy Meters
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Basic data

Standard ID JJG 1186-2022 (JJG1186-2022)
Description (Translated English) Verification Equipment for DC Electrical Energy Meters
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 27,227
Date of Issue 2022-09-26
Date of Implementation 2023-03-26
Issuing agency(ies) State Administration for Market Regulation

JJG 1186-2022: Verification Equipment for DC Electrical Energy Meters

---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.
Verification Equipment for DC Electrical Energy Meters National Metrology Verification Regulations of the People's Republic of China DC watt-hour meter verification device Released on 2022-09-26 2023-03-26 Implementation Released by the State Administration for Market Regulation Verification Regulations for Verification Device of DC Electric Energy Meter Responsible unit. National Electromagnetic Metrology Technical Committee Main drafting unit. Hunan Institute of Metrology and Testing Changsha Tianheng Measurement and Control Technology Co., Ltd. Shandong Institute of Metrology Participating in the drafting unit. State Grid Hunan Electric Power Co., Ltd. Power Supply Service Center (Metering Center) Huaihua Jiannan Electronic Technology Co., Ltd. This regulation entrusts the National Electromagnetic Metrology Technical Committee to be responsible for interpretation The main drafters of this regulation. Song Wentao (Hunan Institute of Metrology and Testing) Xie Xiaojun (Hunan Institute of Metrology and Testing) Zhou Xinhua (Changsha Tianheng Measurement and Control Technology Co., Ltd.) Participating drafters. Li Qingxian (Hunan Institute of Metrology and Testing) Yangmei (Shandong Institute of Metrology) Chen Xiangqun [Power Supply Service Center (Metering Center) of State Grid Hunan Electric Power Co., Ltd.] Yang Huijun (Huaihua Jiannan Electronic Technology Co., Ltd.)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(1) 5 Metrological performance requirements (1) 5.1 Basic error of electric energy (1) 5.2 Measurement repeatability(2) 5.3 Standards(2) 5.4 Output and display of energy value (3) 5.5 Error and display of monitoring value (3) 5.6 Device output(3) 5.7 Consistency of Multiple Outputs(4) 5.8 Load effects(4) 5.9 Poor stability (4) 6 General technical requirements (5) 6.1 Appearance(5) 6.2 Structure (5) 6.3 Output terminal and error display (5) 6.4 Insulation(5) 6.5 Thermal stability(5) 7 Measuring Instrument Control(5) 7.1 Initial verification, subsequent verification and in-use inspection(5) 7.2 Test conditions (6) 7.3 Verification items (6) 7.4 Verification method (7) 7.5 Processing of test results (11) 7.6 Verification cycle (11) Appendix A Verification Original Record Format (12) Appendix B Format of the inner pages of the verification certificate/test result notification (page 2) (16) Appendix C Verification Certificate/Verification Result Notice Verification Result Page Sample (Page 3) (17)

Introduction

JJF1002 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions" and JJF1059.1 "Assessment and Expression of Measurement Uncertainty" together constitute the basic series of regulations supporting the formulation of this regulation. Fan. This regulation stipulates the main technical requirements, verification items and verification methods of the DC electric energy meter verification device. This regulation is published for the first time. Verification Regulations for Verification Device of DC Electric Energy Meter

1 Scope

This regulation applies to the initial verification, follow-up verification and in-use inspection of the DC electric energy meter verification device.

2 References

This procedure references the following documents. JJG 842-2017 Verification Regulations for Electronic DC Energy Meter For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation.

3 terms

The following terms and definitions apply to this procedure. 3.1 Ripple ripple wave In a DC voltage or current, the AC component superimposed on the DC. Note. The size of the ripple is usually represented by the effective value or peak value, and this procedure is represented by the effective value. 3.2 ripple coefficient ripplecoefficient The ratio of the effective value of the output ripple voltage (current) to the output DC voltage (current), usually in percentage (%)express. 3.3 control limit control limit Generally refers to the frequent use, which is more representative of the metering performance of the device, and is usually used as an evaluation of the metering performance by the manufacturer and the user. The main reference limit for adjustment and long-term assessment.

4 Overview

The DC watt-hour meter verification device (hereinafter referred to as the device) is used for the verification of the DC watt-hour meter. combination of appliances that supply energy and are capable of measuring this energy. Usually, the device consists of an electric energy measurement standard (standard electric energy meter, power Rate meter, electric energy converter) or electric energy measuring circuit, limit expansion circuit, electric parameter monitoring circuit (or instrument), auxiliary Auxiliary measurement circuit, communication interface, and electric energy output circuit. The current output mode of the device includes. current direct Output mode, small signal voltage output mode.

5 Metering performance requirements

5.1 Basic error of electric energy 5.1.1 The basic error of electric energy refers to the measurement error of the electric energy of the device under the reference condition, which is determined by the test and used relative error representation. 5.1.2 The accuracy level of the device is divided according to the accuracy level of electric energy measurement. When the current output mode of the device is both For direct current output type and small signal voltage output type, the accuracy grades shall be marked respectively.

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