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

JJG 1157-2018 English PDF

US$509.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 1157-2018: DC Current Transformers
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 1157-2018	English	509	Add to Cart	4 days [Need to translate]	DC Current Transformers	Valid	JJG 1157-2018

PDF similar to JJG 1157-2018

Standard similar to JJG 1157-2018

JJF 1234 JJF 1187 JJG 376 JJF 2000 JJG 1165 JJG 1156

Basic data

Standard ID	JJG 1157-2018 (JJG1157-2018)
Description (Translated English)	DC Current Transformers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A55
Word Count Estimation	22,296
Date of Issue	2018-12-25
Date of Implementation	2019-03-25
Regulation (derived from)	State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies)	State Administration for Market Regulation

JJG 1157-2018: DC Current Transformers

---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.
(DC current transformer verification procedure) National Metrology Verification Regulations of the People's Republic DC current transformer Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released DC current transformer verification procedure Focal Point. National Electromagnetic Measurement Technical Committee High Voltage Measurement Subcommittee Drafting unit. National High Voltage Metering Station State Grid Corporation China Electric Power Research Institute Co., Ltd. State Grid Corporation Operating Branch State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute State Grid Hubei Electric Power Co., Ltd. Metrology Center Wuhan Yudian Technology Co., Ltd. This regulation entrusts the National Electromagnetic Measurement Technical Committee High Voltage Measurement Subcommittee to explain Drafters of this procedure. Li He (National High Voltage Metering Station) Peng Chuning (State Grid Co., Ltd.) Hu Haoliang (China Electric Power Research Institute Co., Ltd.) Yu Kewu (State Grid Corporation Operating Branch) Lu Shufeng (State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute) Li Jun (Guowang Hubei Electric Power Co., Ltd. Metrology Center) Sun Jun (Wuhan Yudian Technology Co., Ltd.)

Introduction II 1 Scope 1 2 References 1 3 term 1 3.1 DC current transformer 1 3.2 Primary current sensor 1 3.3 primary converter 1 3.4 Transmission System 1 3.5 secondary converter 1 4 Overview 2 5 Metrology performance requirements 2 5.1 Basic Error and Accuracy Level 2 5.2 Cycle Stability 3 6 General technical requirements 3 6.1 Appearance 3 6.2 Insulation 3 6.3 Polarity 3 7 measuring instrument control 3 7.1 Verification conditions 3 7.2 Verification items and verification methods 4 7.3 Processing of verification results 6 7.4 Verification cycle 6 Appendix A Basic Principles of DC Current Transformers 7 Appendix B Additional error control for on-site verification of DC current transformers 10 Appendix C Verification of the original record format 11 Appendix D Verification Certificate/Verification Result Notice Page Format 14 Appendix E Verification certificate/verification result notification result result page (page 3) style 15

Introduction

This procedure is based on JJF1002-2010 “Rules for the Preparation of National Metrology Verification Procedures”. This procedure is the first release. DC current transformer verification procedure

1 Scope

This procedure is applicable to the first verification, subsequent verification and use of DC current transformers for HVDC transmission systems. an examination.

2 reference files

This procedure refers to the following documents. GB/T 16927.1-2011 High voltage test techniques - Part 1. General definitions and test requirements GB/T 20840.8-2007 Transformers - Part 8. Electronic current transformers GB/T 26216.1-2010 High-voltage direct current transmission system DC current measuring device - Part 1. Electronic DC current measuring device GB/T 26216.2-2010 High-voltage direct current transmission system DC current measuring device - Part 2. Electromagnetic DC current measuring device For dated references, only the dated version applies to this Code; any undated quotation The latest version (including all amendments) applies to this procedure.

3 terms

GB/T 20840.8-2007, GB/T 26216.1-2010 and GB/T 26216.2-2010 define and The following terms and definitions apply to this procedure. 3.1 DC current transformer DCcurrenttransformer Also known as DC current measuring device. Providing a signal corresponding to a primary circuit direct current, supplying the measuring instrument Instruments, meters and protection or control equipment. [Refer to GB/T 26216.1-2010, 3.1] 3.2 primary current sensor primary currentsensor An electrical, electronic, optical or other device that produces a signal corresponding to a current flowing through a primary terminal, The generated signal is transmitted to the secondary device either directly or via a converter. [Refer to GB/T 20840.8-2007, 3.1.4] 3.3 primary converter primaryconverter A device that converts signals from one or more primary current sensors into signals suitable for the transmission system. [Refer to GB/T 20840.8-2007, 3.1.5] 3.4 Transmission system transmissionsystem A short or long range coupling device that transmits signals between primary and secondary components. According to the technology used, The transmission system can also be used to transmit power. [GB/T 20840.8-2007, 3.1.7]

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 1157-2018_English be delivered?

Answer: Upon your order, we will start to translate JJG 1157-2018_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 JJG 1157-2018_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 1157-2018_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.