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JJF 1878-2020 English PDF

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US$509.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1878-2020: Calibration Specification for On-line Monitoring Devices of Capacitive Equipment
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1878-2020	509	Add to Cart	4 days	Calibration Specification for On-line Monitoring Devices of Capacitive Equipment	Valid

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Basic data

Standard ID: JJF 1878-2020 (JJF1878-2020)
Description (Translated English): Calibration Specification for On-line Monitoring Devices of Capacitive Equipment
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Classification of International Standard: 17.220
Word Count Estimation: 22,254
Date of Issue: 2020-11-26
Date of Implementation: 2021-05-26
Quoted Standard: DL/T 1562-2016
Regulation (derived from): Announcement No. 57 (2020) of the State Administration for Market Regulation
Issuing agency(ies): State Administration for Market Regulation
Summary: This standard applies to the calibration of online monitoring devices for high-voltage electrical equipment with capacitive insulation structures (hereinafter referred to as "monitoring devices").

JJF 1878-2020: Calibration Specification for On-line Monitoring Devices of Capacitive Equipment

---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.
Calibration Specification for On-line Monitoring Devices of Capacitive Equipment National Metrology Technical Specifications of the People's Republic of China Calibration specification for online monitoring device of capacitive equipment 2020-11-26 release 2021-05-26 implementation Issued by the State Administration for Market Regulation On-line monitoring device for capacitive equipment Calibration specification Focal point: National Electromagnetic Metrology Technical Committee High Voltage Metrology Sub-committee Main drafting unit: National High Voltage Metering Station State Grid Hubei Electric Power Co:, Ltd: Electric Power Research Institute State Grid Zhejiang Electric Power Co:, Ltd: Electric Power Research Institute Participating in the drafting: State Grid Shandong Electric Power Co:, Ltd: Electric Power Research Institute State Grid Tianjin Electric Power Co:, Ltd: Electric Power Research Institute State Grid Jiangsu Electric Power Co:, Ltd: Electric Power Research Institute State Grid Liaoning Electric Power Co:, Ltd: Electric Power Research Institute This specification entrusts the National Electromagnetic Measurement Technical Committee High Voltage Measurement Sub-Technical Committee to be responsible for the interpretation The main drafters of this specification: Wang Siqi (National High Voltage Metering Station) He Jiahui (State Grid Hubei Electric Power Co:, Ltd: Electric Power Research Institute) Song Qihua (State Grid Zhejiang Electric Power Research Institute) Participating drafters: Wang Andong (State Grid Shandong Electric Power Co:, Ltd: Electric Power Research Institute) Liu Baocheng (State Grid Tianjin Electric Power Co:, Ltd: Electric Power Research Institute) Yong Ma (State Grid Jiangsu Electric Power Research Institute) Jin Xin (State Grid Liaoning Electric Power Research Institute)

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Term (1) 4 Overview (1) 5 Measurement characteristics (2) 5:1 Reference voltage (2) 5:2 Full current (2) 5:3 Dielectric loss factor (2) 5:4 Electric capacity(2) 6 Calibration conditions (2) 6:1 Environmental conditions (2) 6:2 Measurement standards and auxiliary equipment (3) 7 Calibration items and calibration methods (3) 7:1 Calibration items (3) 7:2 Calibration method (4) 8 Calibration result expression (6) 8:1 Data processing (6) 8:2 Calibration certificate (6) 9 Recheck interval (7) Appendix A Calibration method of monitoring device after installation and in operation (8) Appendix B: Calibration Original Record Format (10) Appendix C Internal page format of calibration certificate (13) Appendix D Examples of Measurement Uncertainty Evaluation (16)

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 DL/T 1562-2016 "Calibration Specification for Capacitive Equipment Monitoring Device": This specification is released for the first time: Calibration specification for online monitoring device of capacitive equipment

1 Scope

This specification applies to online monitoring devices for high-voltage electrical equipment with capacitive insulation structures (hereinafter referred to as "monitoring devices"): Set”) calibration:

2 Reference documents

This specification refers to the following documents: DL/T 1562-2016 Calibration specification for capacitive equipment monitoring device For dated reference documents, only the dated version applies to the specification; for undated references The latest version (including all amendments) is applicable to this specification:

3 term

3:1 Capacitive equipment High-voltage electrical equipment with capacitive insulation structure: 3:2 Online monitoring device on-linemonitoringdevice A device used for continuous monitoring and measurement of high-voltage equipment without power failure: 3:3 (of the monitoring device) reference voltage (ofthemonitoringdevice) The voltage used as the phase reference when measuring the dielectric loss factor: This voltage is obtained through the secondary side of the voltage transformer: It is often power frequency 100V/3 or 100V: 3:4 totalcurrent The total current through the current acquisition unit of the monitoring device:

4 overview

The monitoring device measures the full current I, dielectric loss factor D and reference voltage U of the capacitive equipment, etc: To reflect the insulation status of capacitive equipment in real time: The monitoring device consists of a reference voltage acquisition unit, a full current acquisition unit, Signal processing and analysis unit, communication display unit: Its working principle is shown in Figure 1: ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1878-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1878-2020_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 JJF 1878-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1878-2020_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 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.