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JJF 1788-2019 English PDF

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US$949.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1788-2019: Program of Pattern Evaluation of Earth Resistance Meters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1788-2019	949	Add to Cart	6 days	Program of Pattern Evaluation of Earth Resistance Meters	Valid

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Basic data

Standard ID: JJF 1788-2019 (JJF1788-2019)
Description (Translated English): Program of Pattern Evaluation of Earth Resistance Meters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Classification of International Standard: 17.220
Word Count Estimation: 44,478
Date of Issue: 2019
Date of Implementation: 2020-03-31
Issuing agency(ies): State Administration for Market Regulation

JJF 1788-2019: Program of Pattern Evaluation of Earth Resistance 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.
(Outline of Type Evaluation of Grounding Resistance Meter) National Measurement Technical Specification of the People's Republic of China Outline of Type Evaluation of Grounding Resistance 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 Grounding Resistance Meter Centralized unit. National Electromagnetic Measurement Technical Committee Main drafting unit. Liaoning Institute of Metrology Chinese Academy of Metrology Shandong Institute of Metrology Participated in the drafting unit. Beijing Academy of Metrology and Testing Science Shanghai Institute of Metrology and Testing Technology Gansu Institute of Metrology This specification entrusts the National Electromagnetic Measurement Technical Committee to interpret The main drafters of this specification. Liang Guoding (Liaoning Institute of Metrology) Wang Hao (Chinese Academy of Metrology) Xuefeng Ma (Shandong Institute of Metrology) Sun Tianyu (Liaoning Institute of Metrology) Participating drafters. Yang Yang (Beijing Institute of Metrology and Testing Science) Zhou Liren (Shanghai Institute of Metrology and Testing Technology) Dong Gang (Gansu Metrology Research Institute)

Introduction (Ⅲ) 1 Scope (1) 2 References (1) 3 Terms and definitions (1) 4 Overview (2) 5 Legal management requirements (3) 5.1 Unit of measurement (3) 5.2 External structure (4) 5.3 Marks and logos (4) 6 Measurement requirements (4) 6.1 Insulation resistance (4) 6.2 Dielectric strength (4) 6.3 Maximum allowable error (4) 6.4 Accuracy class (5) 6.5 Position influence (5) 6.6 Effect of auxiliary earthing resistance (5) 6.7 Influence of interference with ground voltage (5) 7 General technical requirements (6) 7.1 Working conditions (6) 7.2 Appearance and structure (6) 7.3 No resonance (6) 7.4 Ferromagnetic bracket (6) 7.5 Conductive bracket (6) 7.6 External magnetic field (6) 7.7 Indicating value change caused by power supply (6) 7.8 Climate and environmental adaptability (7) 7.9 Adaptability to mechanical environment (8) 7.10 Electromagnetic compatibility (9) 8 List of Type Evaluation Items (10) 9 Provide the number of prototypes and how to use them (11) 9.1 Number of prototypes provided (11) 9.2 How to use the prototype (11) 10 Test conditions and methods of test items, data processing and qualification criteria (11) 10.1 Test conditions of the project (11) 10.2 Insulation resistance (11) 10.3 Dielectric strength (12) 10.4 Basic error of resistance measurement (12) 10.5 Position influence test (14) 10.6 Effect test of auxiliary earthing resistance (14) 10.7 Influence test of interference ground voltage (14) 10.8 Appearance and structure(15) 10.9 No resonance (16) 10.10 Ferromagnetic bracket test (16) 10.11 Conductive bracket test (16) 10.12 External magnetic field test (17) 10.13 Power supply voltage influence test (17) 10.14 Climate environment test (18) 10.15 Mechanical environmental test (20) 10.16 Electromagnetic compatibility (21) 11 Table of measuring instruments and equipment used in the test project (21) Appendix A Type Evaluation Record Format (23) Appendix B Type Evaluation Report Format (32) Appendix C Format of "Description" for Type Evaluation Preservation Prototype (37)

Introduction

This outline is based on JJF 1016-2014 "Guidelines for the Compilation of Outlines for Measuring Apparatus Type Evaluation", JJF 1015-2014 Compilation of the "General Specification for Type Evaluation of Measuring Instruments". This outline is published for the first time. Outline of Type Evaluation of Grounding Resistance Meter

1 Scope

This outline is applicable to hand-held grounding resistance meters and electric instruments for general measurement of measuring instruments with classification code 15060500 Type evaluation of sub-type grounding resistance meter.

2 Reference documents

The outline cited the following documents. JJG366 Ground Resistance Meter GB/T 191 Graphic mark for packaging, storage and transportation GB/T 2423.1 Environmental testing for electrical and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2 Environmental Test for Electrical and Electronic Products Part 2.Test Method Test B. High Temperature GB/T 2423.3 Environmental Test Part 2.Test Method Test Cab. Constant Damp Heat Test GB/T 2423.5 Environmental Test Part 2.Test Method Test Ea and Guidelines. Impact GB/T 2423.7 Environmental Test Part 2.Test Method Test Ec. Impact Caused by Coarse Operation (Mainly used for equipment type samples) GB/T 2423.10 Environmental Test Part 2.Test Method Test Fc. Vibration (Sinusoidal) GB/T 4798.3 Environmental conditions for the application of electrical and electronic products. Part 3.Fixed use in places with climate protection GB/T 4798.7 Environmental conditions for the application of electrical and electronic products. Part 7.Portable and non-stationary use GB/T 6113.101 Specification for radio disturbance and immunity measuring equipment and methods Part 1-1.None Line electrical disturbance and immunity measuring equipment GB/T 6587-2012 General specification for electronic measuring instruments GB/T 7676.1-2017 Direct acting analog indicating electrical measuring instruments and their accessories Part 1.Definitions and common enquiries GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3 Electromagnetic compatibility test and measurement technology RF electromagnetic field radiation immunity test GB/T 18268.1 Electromagnetic compatibility requirements for electrical equipment for measurement, control and laboratory use. Part 1. common enquiries GB/T 18268.22 Requirements for electromagnetic compatibility of electrical equipment for measurement, control and laboratory use Part 22. Particular requirements for test configuration, working conditions and performance of portable test, measurement and monitoring equipment for low-voltage distribution systems Criterion DL/T 845.2 General technical requirements for resistance measuring devices Part 2.Power frequency grounding resistance tester For dated reference documents, only the dated version applies to this specification; for those without date references The latest version (including all amendments) is applicable to this specification.

3 Terms and definitions

The following terms and definitions defined in the documents cited in this outline apply to this outline. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1788-2019_English be delivered?

Answer: Upon your order, we will start to translate JJF 1788-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1788-2019_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1788-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.