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JJF 2028-2023 English PDF

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JJF 2028-2023: Calibration Specification for Impulse Measuring Systems - Impulse Voltage - Part 1: Impulse Voltage Dividers
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JJF 2028-2023English689 Add to Cart 6 days [Need to translate] Calibration Specification for Impulse Measuring Systems - Impulse Voltage - Part 1: Impulse Voltage Dividers Valid JJF 2028-2023

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Basic data

Standard ID JJF 2028-2023 (JJF2028-2023)
Description (Translated English) Calibration Specification for Impulse Measuring Systems - Impulse Voltage - Part 1: Impulse Voltage Dividers
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 31,313
Date of Issue 2023-03-15
Date of Implementation 2023-09-15
Issuing agency(ies) State Administration for Market Regulation

JJF 2028-2023: Calibration Specification for Impulse Measuring Systems - Impulse Voltage - Part 1: Impulse Voltage Dividers


---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.
National Metrology Technical Specifications of the People's Republic of China JJF 2028-2023 Calibration specifications for impulse measurement systems Impulse voltage Part 1: Impulse voltage dividers Released on 2023-03-15 2023-09-15 Implementation Released by the State Administration for Market Regulation Specification for Calibration of Shock Measuring Systems Impulse voltage Part 1: Impulse voltage dividers Systems-ImpulseVoltage- Responsible Unit: High Voltage Metrology Sub-Technical Committee of National Electromagnetic Metrology Technical Committee Main drafting unit: National High Voltage Metering Station State Grid Hebei Electric Power Co:, Ltd: Electric Power Research Institute Shanghai Institute of Metrology and Testing Technology Participating in the drafting unit: State Grid Hubei Electric Power Co:, Ltd: Electric Power Research Institute Jiangsu Institute of Metrology Wuhan Pandian Technology Co:, Ltd: This specification entrusts the National Electromagnetic Metrology Technical Committee High Voltage Metrology Sub-Technical Committee to be responsible for interpretation The main drafters of this specification: Liu Shaobo (National High Voltage Metering Station) Long Zhaozhi (National High Voltage Metering Station) Pan Jin (Electric Power Research Institute of State Grid Hebei Electric Power Co:, Ltd:) Pan Yang (Shanghai Institute of Metrology and Testing Technology) Participating drafters: Ren Xiang (Electric Power Research Institute of State Grid Hubei Electric Power Co:, Ltd:) Pan Baoxiang (Jiangsu Institute of Metrology) Sun Jun (Wuhan Pandian Technology Co:, Ltd:)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(1) 5 Metrological characteristics(2) 5:1 Voltage divider ratio(2) 5:2 Time parameter(2) 5:3 Linearity(2) 6 Calibration conditions(2) 6:1 Environmental conditions (2) 6:2 Standard measuring devices and other equipment (3) 7 Calibration Items and Calibration Methods(4) 7:1 Calibration items(4) 7:2 Calibration method(4) 8 Calibration Results(8) 9 Recalibration interval(9) Appendix A Impulse Voltage Waveform Definition and Parameter Calculation (10) Appendix B Example of Measurement Uncertainty Evaluation of Impulse Divider Voltage Divider Ratio and Time Parameter Calibration Results (14) Appendix C Calibration Raw Record Format(19) Appendix D Calibration Certificate Inner Page Format (23)

Introduction

JJF 1071-2010 "Rules for Compilation of National Metrology Calibration Standards", JJF 1001-2011 "General Metrology Terminology and "Definition" and JJF 1059:1-2012 "Assessment and Expression of Measurement Uncertainty" jointly constitute the support for the formulation of this specification basic documents: This specification is published for the first time: Calibration specifications for impulse measurement systems Impulse voltage Part 1: Impulse voltage dividers

1 Scope

This specification is applicable to impulse currents for measuring lightning impulse voltages and operating impulse voltages with rated voltages of 1kV and above: Calibration of voltage dividers: This specification does not apply to impulse voltage dividers for measuring lightning impulse chopping voltage with wavefront truncated calibration:

2 References

This specification references the following documents: GB/T 16927:1-2011 High Voltage Test Technology Part 1: General Definitions and Test Requirements GB/T 16927:2-2013 High Voltage Test Technology Part 2: Measurement System For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification:

3 terms

The following terms and definitions defined in GB/T 16927:1 and GB/T 16927:2 apply to this specification: 3:1 Voltage division ratio voltageratio The ratio of the input voltage to the output voltage of a surge voltage divider: 3:2 Standard lightning impulse voltage standardlightning-impulsevoltage Smooth lightning impulse voltage with a wave front time of 1:2 μs and a half-peak time of 50 μs: Note 1: Generally, the wave front time is 0:84μs~1:56μs, and the half-peak time is 40μs~60μs, which can be considered as standard lightning impulse Voltage: Note 2: Oscillation near the overshoot and peak value is permissible, and the relative overshoot amplitude is allowed not to exceed 10%: [Source: GB/T 16927:1-2011, 7:2:1, modified] The cut-off time is the standard lightning impulse voltage cut off by the external gap with a cut-off time of 2μs~5μs: [Source: GB/T 16927:1-2011, 7:2:3, modified] 3:4 Standard operating impulse voltage standardswitching-impulsevoltage Impulse voltage with a peak time of 250μs and a half-peak time of 2500μs: Note: Generally, the peak time is:200μs~300μs, and the half-peak time is 1000μs~4000μs, which can be considered as standard operation shock Voltage: [Source: rewritten GB/T 16927:1-2011, 8:2:1, with modifications]

4 Overview

Impulse voltage divider is a measuring device used to measure impulse voltage, which can convert the measured impulse high voltage to a certain proportion:

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