HOME Cart(0) Quotation About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

JJF 1872-2020 English PDF

US$599.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1872-2020: Self-Calibration Method for Apparatus of DC Voltage Ratio Standards
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1872-2020	English	599	Add to Cart	5 days [Need to translate]	Self-Calibration Method for Apparatus of DC Voltage Ratio Standards	Valid	JJF 1872-2020

PDF similar to JJF 1872-2020

Standard similar to JJF 1872-2020

JJF 1234 JJF 1576 JJG 376 JJF 1879 JJF 1882 JJF 1878

Basic data

Standard ID	JJF 1872-2020 (JJF1872-2020)
Description (Translated English)	Self-Calibration Method for Apparatus of DC Voltage Ratio Standards
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A55
Word Count Estimation	26,227
Date of Issue	2020-09-11
Date of Implementation	2021-03-11
Regulation (derived from)	Announcement No. 40 (2020) of the State Administration for Market Regulation
Issuing agency(ies)	State Administration for Market Regulation

JJF 1872-2020: Self-Calibration Method for Apparatus of DC Voltage Ratio Standards

---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.
Self-Calibration Method for Apparatus of DC Voltage Ratio Standards National Metrology Technical Specifications of the People's Republic of China Self-calibration method of DC voltage ratio standard device 2020-09-11 released 2021-03-11 implementation Issued by the State Administration for Market Regulation DC voltage ratio Standard device self-calibration method Focal point. National Electromagnetic Metrology Technical Committee High Voltage Metrology Sub-committee Drafting unit. National High Voltage Metering Station China Electric Power Research Institute Co., Ltd. State Grid Corporation of China DC Department China Southern Power Grid Co., Ltd. EHV Transmission Company State Grid Jiangxi Electric Power Company Electric Power Research Institute State Grid Henan Electric Power Company Measurement Center State Grid Sichuan Electric Power Company Measurement Center This specification entrusts the National Electromagnetic Measurement Technical Committee High Voltage Measurement Sub-Technical Committee to be responsible for the interpretation Drafters of this specification. Li Dengyun (National High Voltage Metering Station) Zhou Feng (China Electric Power Research Institute Co., Ltd.) Guo Xianshan (DC Department of State Grid Corporation of China) Wang Qi (UHV Transmission Company of China Southern Power Grid Co., Ltd.) Jin Shaoping (State Grid Jiangxi Electric Power Company Electric Power Research Institute) Zhao Yufu (Measurement Center of State Grid Henan Electric Power Company) Zhang Fuzhou (Measurement Center of State Grid Sichuan Electric Power Company)

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and definitions (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 Partial pressure ratio (2) 5.2 Voltage divider ratio voltage coefficient (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 DC withstand voltage(2) 6.3 Measurement standards and other equipment (2) 7 Calibration items and calibration methods (3) 7.1 Calibration items (3) 7.2 Preparation before calibration (3) 7.3 Calibration method (3) 8 Calibration result expression (6) 9 Recalibration interval (6) Appendix A Evaluation Example of Uncertainty in Measurement of Partial Pressure Ratio (7) Appendix B Original Records and Data Processing (12) Appendix C Internal Page Format of Calibration Certificate (17) Appendix D (informative appendix) DC voltage addition principle and formula derivation (19)

Introduction

JJF 1001-2011 "General Metrology Terms and Definitions", JJF 1059.1-2012 "Measuring Uncertainty Evaluation and Representation” and JJF 1071-2010 “Rules for the Compilation of National Metrology and Calibration Specifications” together constitute the foundation supporting this specification Series specifications. This specification refers to GB/T 16927.1-2011 "High Voltage Test Technology Part 1.General Specification Meaning and test requirements. This specification is released for the first time. Self-calibration method of DC voltage ratio standard device

1 Scope

This specification applies to the self-calibration of DC voltage proportional standard devices that adopt the principle of DC voltage addition.

2 Reference documents

This specification refers to the following documents. GB/T 16927.1-2011 High Voltage Test Technology Part 1.General Definition and Test Requirements For dated reference documents, only the dated version is applicable to the specification; for undated references The latest version (including all amendments) is applicable to this specification.

3 Terms and definitions

The following terms and definitions apply to this specification. 3.1 Main standard voltage divider A standard voltage divider used to store the standard value of the voltage division ratio, that is, a standard device for DC voltage ratio. 3.2 Auxiliary standard voltage divider A standard voltage divider used to calibrate the voltage coefficient of the main standard voltage divider ratio. 3.3 Pass the standard voltage divider Used to calibrate the main standard voltage divider at 10% UN (UN. the rated voltage of the main standard voltage divider, the same below) The standard voltage divider of the pressure ratio value. 3.4 Self-calibration system of DC voltage ratio standard device A system that can determine the voltage divider ratio and voltage coefficient of the main standard voltage divider through self-calibration, including the main standard voltage divider, Auxiliary standard voltage divider and transfer standard voltage divider. 3.5 Voltage division ratio voltage coefficient The voltage applied to the voltage divider rises from the reference voltage (the voltage division ratio under the reference voltage is K0) to another voltage (The voltage division ratio at this voltage is Kx) The relative change in the voltage division ratio γ=(Kx-K0)/K0. 3.6 Voltage coefficient of the reciprocal of the voltage divider ratio The voltage applied to the voltage divider rises from the reference voltage (the reciprocal of the voltage division ratio under the reference voltage is 1/K0) to another Voltage (the reciprocal of the voltage division ratio under this voltage is 1/Kx) when the relative change of the reciprocal of the voltage division ratio β=(1/Kx-1/K0)×K0.

4 overview

The self-calibration system of DC voltage ratio standard device consists of 1 main standard voltage divider and 2 auxiliary standard voltage dividers

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1872-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1872-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1872-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1872-2020_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 [email protected]. 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.