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JJG 1005-2019: Electronic Insulation Resistance Meters
Status: Valid JJG 1005: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 1005-2019 | English | 419 |
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Electronic Insulation Resistance Meters
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JJG 1005-2019
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| JJG 1005-2005 | English | 599 |
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Verification Regulation of Electronic Insulating Resistance Meters
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JJG 1005-2005
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General Terms of Reference Material
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PDF similar to JJG 1005-2019
Basic data | Standard ID | JJG 1005-2019 (JJG1005-2019) | | Description (Translated English) | Electronic Insulation Resistance Meters | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A55 | | Classification of International Standard | 17.220.20 | | Word Count Estimation | 19,178 | | Date of Issue | 2019 | | Date of Implementation | 2020-03-31 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 1005-2019: Electronic Insulation Resistance Meters---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 Electronic Insulation Resistance Meter)
National Measurement Verification Regulations of the People's Republic of China
Electronic insulation resistance meter
Published on December 31,.2019
2020-03-31 Implementation
Issued by the State Administration of Market Supervision and Administration
Electronic insulation resistance meter
Verification regulations
Replace JJG 1005-2005
Centralized unit. National Electromagnetic Measurement Technical Committee
Main drafting unit. National High Voltage Measuring Station
Chinese Academy of Metrology
Yichang Metrology Verification Test Institute
Participated in the drafting unit. State Grid Hubei Electric Power Company Electric Power Research Institute
Liaoning Institute of Metrology
Wuhan Kangda Electric Co., Ltd.
This regulation is entrusted to the National Electromagnetic Measurement Technical Committee for interpretation
The main drafters of this regulation.
Zhang Jun (National High Voltage Metering Station)
Wang Siqi (National High Voltage Metering Station)
Liang Bo (Chinese Academy of Metrology)
Chen Yu (Yichang Metrology Verification Test Institute)
Participating drafters.
Shen Li (State Grid Hubei Electric Power Company Electric Power Research Institute)
Liang Guoding (Liaoning Institute of Metrology)
Hu Xiaohui (Wuhan Kangda Electric Co., Ltd.)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Terminology (1)
3.1 Insulation resistance (1)
3.2 Measuring terminal (1)
3.3 Terminal voltage (1)
3.4 Rated voltage (1)
3.5 Open circuit voltage (1)
3.6 Drop resistance (1)
3.7 Drop voltage (1)
4 Overview (1)
5 Measurement performance requirements (2)
5.1 Accuracy level and maximum allowable error (2)
5.2 Terminal voltage and allowable range (4)
6 General technical requirements (4)
6.1 Appearance and marking (4)
6.2 Electrical safety performance (4)
7 Control of measuring instruments (5)
7.1 Verification conditions (5)
7.2 Measurement standard used in verification (5)
7.3 Verification items (5)
7.4 Verification method (6)
7.5 Processing of verification results (8)
7.6 Verification period (8)
Appendix A Verification of Original Record Format (9)
Appendix B Format of the inner pages of the certificate of verification/certification result (11)
Appendix C Verification Certificate/Verification Result Notification Verification Results Page Form (Page 3) (12)
Introduction
This regulation is a revision of JJG 1005-2005 "Electronic Insulation Resistance Meter Verification Regulations". With JJG 1005-
Compared with.2005, except for editorial changes, the changes in the relevant technical parts are as follows.
---Insulation resistance inspection process increased to 1TΩ;
--- Adjusted the description in the "Overview" section, the display mode has added digital, pointer dual display and other modes;
---In the measurement performance requirements, the pointer shows the accuracy section of the insulation meter and the maximum allowable error
The requirements of the accuracy section of the digital display insulation table have been improved;
---In the measurement performance requirements, the measurement pointer no longer shows the "median voltage" of the insulation resistance meter, but is unified
Use open circuit voltage and drop voltage to verify the terminal voltage of the pointer display and digital insulation resistance meter, unifying the terminals
Voltage range requirements;
--- In the control of measuring instruments, the requirements for the structure of high-voltage and high-resistance standard devices in the verification equipment have been cancelled, and it is clear
The requirement for the internal resistance of the voltage measuring device has been removed from the "short circuit current" verification item.
Previous releases of JJG 1005.
---JJG 1005-2005.
Verification Regulation of Electronic Insulation Resistance Meter
1 Scope
This regulation is applicable to electronic insulation resistance meters with a measuring range not greater than 1TΩ and a rated voltage of 10kV and below
(Hereinafter referred to as "insulation meter") the first verification, subsequent verification and inspection in use.
This regulation is not applicable to direct-acting analog indication, mechanical type and insulation resistance meters and high resistance meters with special requirements
Test.
2 Reference documents
This regulation refers to the following documents.
JJG 622 Insulation Resistance Meter (Megohmmeter)
For dated references, only the dated versions are applicable to this Regulation; for those without dates
The latest version (including all amendments) is applicable to this regulation.
3 Terminology
3.1 Insulation resistance insulation resistance
The ratio of the value of the DC voltage applied between the two electrodes of the insulating structure to the value of the leakage current flowing through the pair of electrodes.
3.2 Test terminal testterminal
Terminals used to connect the measured object in the insulation table. The measurement terminal is connected to the connection part of the measured object,
Divided into line terminal L, ground terminal E and shield terminal G.
3.3 Terminal voltage
The voltage between the line terminal L and the ground terminal E of the insulation meter.
3.4 Rated voltage ratedvoltage (U0)
The nominal value of the terminal voltage when the measuring terminal is open.
3.5 open-circuit voltage
The insulation meter measures the terminal voltage measured when the terminal is open.
3.6 Fal-offresistance
When measuring the drop voltage of the insulation meter, connect the resistance of the measurement terminal of the insulation meter.
3.7 Fal-offvoltage
The terminal voltage when the drop resistance is connected between the line terminal L and the ground terminal E of the insulation meter reflects the insulation meter
With load capacity.
4 Overview
The insulation meter is powered by a battery or an external power supply. Its basic principle is shown in Figure 1.DC/ through electronics
DC conversion provides measurement voltage to the measurement terminals L and E. The electronic circuit composed of CPU, operational amplifier, ADC, etc.
The circuit converts or processes the measured signal and directly indicates or displays the measured insulation resistance by the magnetoelectric system ammeter or digital meter
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