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JJG 1021-2007 English PDF

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US$829.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 1021-2007: Verification Regulation of Instrument Transformers in Power System
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 1021-2007	829	Add to Cart	6 days	Verification Regulation of Instrument Transformers in Power System	Valid

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Basic data

Standard ID: JJG 1021-2007 (JJG1021-2007)
Description (Translated English): Verification Regulation of Instrument Transformers in Power System
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Classification of International Standard: 17.220.01
Word Count Estimation: 33,370
Date of Issue: 2007-02-28
Date of Implementation: 2007-05-28
Quoted Standard: AQSIQ Announcement No. 41 of 2007
Regulation (derived from): AQSIQ Announcement No. 41 of 2007
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to 6KV and above installed in the power system for current, voltage transformers and transformer combination of initial verification, testing and use of follow-up inspection. 6KV below the power system used in the power transformer, if not move away from the on-site installation location, but also with reference to the verification procedures.

JJG 1021-2007: Verification Regulation of Instrument Transformers in Power System

---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 Regulation of Instrument Transformers in Power System State verification procedures People's Republic of China Power Transformer Posted 2007-02-28 2007-05-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Power transformer test procedures stem The regulations by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 February 28 ratification and From May 28, 2007 into effect. Focal point. the National Technical Committee on Electromagnetic measurement The main drafting units. the national high voltage metering station Zhejiang Institute of Quality and Technical Supervision and Inspection Participated in the drafting unit. China Institute of Metrology Central China Power Group Technology Center East China Electric Power Research Institute Shandong Taikai Transformer Co., Ltd. Guilin Power Capacitor Factory Dalian first transformer plant Wuxi, Nissin Electric Co., Ltd. North China Electric Power Research Institute Shanxi Province, the Electrical and Mechanical Design and Research Institute The measurement procedure commissioned the National Technical Committee is responsible for interpreting electromagnetic The main drafters of this procedure. Wangle Ren (the national high voltage metering station) Wang Xiaoqi (the national high voltage metering station) Zhang said the Chinese (the national high voltage metering station) Yang Guoying (Zhejiang Provincial Quality and Technical Supervision and Inspection Institute) Drafters participate. Lu Wenjun (China Institute of Metrology) Wu Tao (Central China Power Group Technology Center) Chen in (East China Electric Power Research Institute) Wang Mei (Shandong Taikai Transformer Co., Ltd.) Huang Youxiang (Guilin Power Capacitor Factory) Wang Yuan (Dalian first transformer factory) Deng tower (Wuxi, Nissin Electric Co., Ltd.) Peng Shixiong (North China Electric Power Research Institute) Zhao Yi Tao (Shanxi Province, Electrical and Mechanical Design and Research Institute)

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 metering performance requirements (2) 4.1 accuracy class (2) 4.2 basic error (2) 4.3 Stability (3) Run variation 4.4 (3) 4.5 magnetic saturation margin (4) 5 General technical requirements (4) 5.1 nameplate and logo (4) 5.2 Insulation (4) 6 Control of measuring instruments (4) 6.1 Verification condition (4) 6.2 Verification Project (5) 6.3 Verification Methods (6) 6.4 test results processing (13) 6.5 test cycle (14) A test in the original record and test certificate format page appendix (15) Appendix B open circuit current transformer demagnetization method (23) Appendix C with an equal ampere-turns large measurement error of current transformers (24) Appendix D voltage transformer load error curve extrapolation (25) Appendix E adjacent current-carrying conductor impact on transformer errors (27) Power transformer test procedures

1 Scope

The order applies to the installation for the current and voltage transformers in 6kV and above the power system and the combination of mutual inductance (Referred to as power transformers) initial verification, subsequent verification and use of tests. 6kV below the power system manipulation Power transformers used, if not move away from the site of installation, but also with reference to this test procedure.

2 Citations

The regulations cited in the following documents. GB 1207-2006 magnetic voltage transformers GB 1208-2006 current transformer GB/T 4703-2001 Capacitor Voltage Transformer When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Overview

Current use of power system, voltage transformers and high-voltage isolation plays by current-voltage conversion ratios for Use, to electrical measurements, energy metering, automatic device provides an accurate proportion of the primary circuit current, voltage signal. Current transformers and voltage transformers are electromagnetic principle of electromagnetic induction, the current and voltage of the primary winding transfer To electrically isolate the secondary winding. Capacitor voltage transformer through the capacitive voltage divider to reduce the high voltage primary side Medium pressure, after the adoption of the reactor to compensate capacitive resistance voltage drop is transmitted to the secondary side by the medium-voltage transformer. Current transformer current error (ratio error) fI is defined as follows. fI = KI 2-I1I1 × 100% (1) Where. KI --- current transformer rated current ratio; RMS primary current I1 ---; I2 --- secondary rms current. ΔI phase error is defined as the current transformer primary current and the secondary current phasor phasor phase, the unit is " '." Phasor direction over the current transformer to determine the phase difference is zero, when the amount of secondary current phase ahead of the primary current When the amount of phase, the phase difference is positive, otherwise it is negative. Voltage transformer voltage error (ratio error) fU is defined as follows. fU = KUU2-U1U1 × 100% (2) Where. KU --- voltage transformer rated voltage ratio; U1 --- once RMS voltage; U2 --- secondary voltage rms. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 1021-2007_English be delivered?

Answer: Upon your order, we will start to translate JJG 1021-2007_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 JJG 1021-2007_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 1021-2007_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.