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JJG 984-2004 English PDF

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JJG 984-2004: Verification Regulation of Earth-Continuity Testers
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 984-2004	English	389	Add to Cart	3 days [Need to translate]	Verification Regulation of Earth-Continuity Testers	Valid	JJG 984-2004

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Standard similar to JJG 984-2004

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Basic data

Standard ID	JJG 984-2004 (JJG984-2004)
Description (Translated English)	Verification Regulation of Earth-Continuity Testers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A55
Classification of International Standard	17.220
Word Count Estimation	15,157
Date of Issue	2004-03-02
Date of Implementation	2004-06-02
Quoted Standard	JJF 1059; JJF 1015; GB 4793.1; GB 4706.1; JJF 1001
Regulation (derived from)	Administration of Quality Supervision, Inspection and Quarantine of 2004 No. 24
Issuing agency(ies)	State Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to AC and DC ground resistance tester initial verification, testing and use of follow-up inspection. This procedure also applies to the tester in ground resistance testing part of the test. This procedure does not apply to measure the resistance between the grounding conductor and earth ground resistance meter and similar earth resistance meter test.

JJG 984-2004: Verification Regulation of Earth-Continuity Testers

---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 Earth-Continuity Testers National Metrology Verification Regulations of the People's Republic Grounding resistance tester Released on.2004-03-02 2004-06-02 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Grounding resistance tester Verification procedure Earth-Continuity Testers This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 2,.2004, and Implemented on June 2,.2004. Focal Point. National Electromagnetic Measurement Technical Committee Main drafting unit. Guangdong Institute of Metrology Participated in drafting unit. China Institute of Metrology Wuhan Longcheng Electric Equipment Factory This procedure entrusts the National Electromagnetic Measurement Technical Committee to explain The main drafters of this procedure. Luo Xudong (Guangdong Institute of Metrology) Li Xiaoli (Guangdong Institute of Metrology) Wu Jinxiang (Guangdong Institute of Metrology) He Yun (Guangdong Institute of Metrology) Participate in the drafters. Wang Wei (China Institute of Metrology) Cao Yunfei (Wuhan Longcheng Electrical Equipment Factory)

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 Maximum allowable error (1) 4.2 Accuracy level (2) 4.3 Resolution (2) 4.4 Alarm Preset Error (3) 4.5 Test current setting (adjustment) error (3) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Structure (3) 5.3 Leakage current (3) 5.4 Dielectric strength (3) 6 measuring instrument control (3) 6.1 Verification conditions (3) 6.2 Verification project (4) 6.3 Verification method (4) 6.4 Processing of verification results (9) 6.5 Verification cycle (10) Grounding resistance tester verification procedure

1 Scope

This procedure is applicable to the first verification, subsequent verification and in-use inspection of AC and DC grounding resistance testers. This procedure also applies to the verification of the grounding resistance test portion of the integrated tester. This procedure does not apply to measurement connections Grounding resistance meter for resistance between ground conductor and earth and verification of grounding resistance meter for similar purposes.

2 Citations

This procedure refers to the following documents. JJF1059-1999 "Measurement and Expression of Measurement Uncertainty" JJF1015-2002 "General Specification for Type Evaluation and Type Approval of Measuring Instruments" GB/T 4793.1-1995 "Safety requirements for electrical equipment for measurement, control and laboratory use, Part 1. General Claim" GB/T 4706.1-1998 "General requirements for safety of household and similar electrical appliances" JJF1001-1998 "General Terms and Definitions of Measurement" When using this procedure, care should be taken to use the current valid version of the above cited documents.

3 Overview

Grounding resistance tester is an electrical device used to measure AC power supply (such as household appliances, electric power) Accessible metal housings for thermal appliances, medical electrical equipment, electrical equipment for measurement, control and laboratory, etc. An instrument that draws on the on-resistance between the safety ground (wire). The grounding resistance tester is an accessible metal shell that is applied to the object to be tested by outputting an alternating current or direct current. Between the body and its safety ground (line), and measure the voltage drop generated by the current flowing through the body, and then pass the voltage and The ratio of the currents gives the value of the grounding resistance of the body to be tested. It is mainly composed of current source, voltage measurement, and output current. Or adjustment, sound and light alarm, indicating device and other components. According to the indicating device, it can be divided into digital and analog. In this regulation In the process, the grounding resistance tester is referred to as a digital tester and an analog tester.

4 Metrological performance requirements

4.1 Maximum allowable error 4.1.1 The maximum allowable error of the digital tester resistance indication is expressed in the following form. 4.1.1.1 expressed in the form of absolute error Δ=± (a%Rx b%Rm) (1) Where. Δ---the maximum allowable error expressed in the form of absolute error; Rx---tester resistance indication value; Rm---tester full scale value; a---the coefficient related to the resistance value of the tester;

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