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JJG 1115-2015 English PDF

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JJG 1115-2015: Apparent Charge Calibrator for Partial Discharge Measurements
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Basic data

Standard ID JJG 1115-2015 (JJG1115-2015)
Description (Translated English) Apparent Charge Calibrator for Partial Discharge Measurements
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Classification of International Standard 17.220
Word Count Estimation 23,264
Date of Issue 2015-06-15
Date of Implementation 2015-09-15
Regulation (derived from) AQSIQ Announcement 2015 No.72
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to partial discharge calibrator initial verification, use and subsequent verification check.

JJG 1115-2015: Apparent Charge Calibrator for Partial Discharge Measurements

---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.
(Partial discharge calibrator verification procedures) State verification procedures People's Republic of China Partial Discharge Calibrator Issued on. 2015-06-15 2015-09-15 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Partial discharge calibrator verification procedures Focal point. the National Technical Committee on Electromagnetic measurement The main drafting units. China Institute of Metrology Participated in the drafting unit. Xi'an High Voltage Apparatus Research Institute State Grid Electric Power Research Institute Tsinghua University National wire and cable Quality Supervision and Inspection Center Henan Province Product Quality Supervision and Inspection Institute The measurement procedure commissioned the National Technical Committee is responsible for interpreting electromagnetic The main drafters of this procedure. Liu Na (China Institute of Metrology) He Xiaobing (China Institute of Metrology) Drafters participate. Any steady column (Xi'an High Voltage Apparatus Research Institute) Luo in (State Grid Electric Power Research Institute) Gao Sheng (Tsinghua University) Wu Changshun (national wire and cable Quality Supervision and Inspection Center) Peng Li Ying (Henan Province Product Quality Supervision and Inspection Institute)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 metering performance requirements (1) 3.1 Calibrator Level (1) 3.2 Calibration of the output pulse (1) 3.3 step voltage waveform generator output voltage step (2) 3.4 of capacitance of the capacitor (2) 3.5 Calibrator resistance (2) 4 General Requirements (2) 4.1 appearance and logo (2) 4.2 Other requirements (2) 5 control of measuring instruments (3) 5.1 test conditions (3) 5.2 test items and test methods (4) 5.3 Verification Results Processing (7) 5.4 test cycle (7) Appendix A pulse waveform parameter definitions and test methods (8) B step voltage waveform parameter definitions and test methods Appendix (10) Appendix C test original record format (12) Appendix D calibration certificate/test results in the notice page format (14)

Introduction

This procedure based on the national measurement specifications JJF1002-2010 "national verification procedures to write rules" prepared by. This procedure uses a reference to the drafting of the national standard GB/T 7354-2003/IEC 60270.2000 "partial discharge Measuring "the relevant provisions. This procedure was first formulated. Partial discharge calibrator verification procedures

1 Scope

The order applies to partial discharge calibrator initial verification, use and subsequent verification check.

2 Overview

Partial Discharge Calibrator (hereinafter referred to as "the Calibrator") is a current pulse generator, a current pulse generator Calibration pulse generating means to provide duplicate charges, charges for calibrating partial discharge measurement system. Calibration is usually By the step voltage generator and capacitor division two parts. Step voltage generator through a capacitor in series with indexing Injects standard amount of electric charge to the partial discharge detection test circuit.

3 metering performance requirements

3.1 Calibrator Level (See Table 1) calibrator be classified according to performance measurement calibration output charge amount. Press the range allowed for school Aligner conduct classification. Table 1 calibrator output charge amount requirements Accuracy class maximum permissible error level 2 ± 2% (when measured value is greater than or equal 50pC time) ± 1pC (when the measured value is less than 50pC) Grade 5 ± 5% (when measured value is greater than or equal 20pC time) ± 1pC (when the measured value is less than 20pC time) ± 10% (when measured value is greater than or equal 20pC time) ± 2pC (when the measured value is less than 20pC time) 3.2 calibration output pulse Calibration of the output pulse is the voltage pulse calibrator external load resistor. 3.2.1 pulse waveform Calibration of the output pulse waveform distortion amount and time parameters (as defined in Appendix A) shall meet the provisions of Table 2. Table 2 calibration of the output pulse waveform parameter index requirements Wide at the bottom level of the amount of distortion th1 time interval T2 Level 2 < 100ns> 100μs ≤20% Level 5 < 100ns> 100μs ≤30% 10 < 100ns> 100μs ≤30% 1.00 If the inspection indicated when the calibrator applied to the upper frequency f2 higher than 500kHz measurement system, the index should be less than 0.03/f2. This metric is only 2 for step voltage rectangular pulse sequence mode, the time interval between two consecutive T refers to the pulses of different polarity time. If the calibration is indicated when censorship is applied to the lower frequency f1 lower than 100kHz measurement system, the index should be greater than 1/f1.

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