JJG 546-2010 English PDF

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JJG 546-2010: Verification regulation of DC comparison bridges
Status: Valid

JJG 546: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 546-2010	789	Add to Cart	6 days	Verification regulation of DC comparison bridges	Valid
JJG 546-1988	999	Add to Cart	6 days	Verification Regulation of DC Comparison Bridge	Obsolete

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Basic data

Standard ID: JJG 546-2010 (JJG546-2010)
Description (Translated English): Verification regulation of DC comparison bridges
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Classification of International Standard: 17.220
Word Count Estimation: 34,373
Date of Issue: 2010-01-05
Date of Implementation: 2010-07-05
Older Standard (superseded by this standard): JJG 546-1988
Quoted Standard: JJF 1059-1999; JJF 1015-2002; GB/T 4793-2008; GB 3930-2008; JJG 166-1993; JJG 125-2004; IEC 60564-1997
Regulation (derived from): AQSIQ Announcement No. 3 of 2010
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to direct comparison bridge (hereinafter referred to compare the bridge) initial verification, testing and use of follow-up inspection. This procedure does not apply to ordinary single and double bridge, the bridge automatically, semi-bridge DC comparator bridge, numbers and other special-purpose DC bridge bridge of the test.

JJG 546-2010: Verification regulation of DC comparison bridges

---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 DC comparison bridges State verification procedures People's Republic of China DC Comparator Bridge Issued on. 2010-01-05 2010-07-05 implementation The State Administration of Quality Supervision, Inspection and Quarantine released DC Comparator Bridge test procedures ComparisonBridg es Replacing JJG 546-1988 The test procedures by the State Administration of Quality Supervision, Inspection and Quarantine on January 5, 2010, approved and It shall come into force July 5, 2010. Focal point. the National Technical Committee on Electromagnetic measurement Participated in the drafting unit. China Testing Technology Research Institute The measurement procedure commissioned the National Technical Committee is responsible for interpreting electromagnetic The main drafters of this procedure. Li Shu Wei (China Testing Technology Research Institute) Hou Xiaojing (China Testing Technology Research Institute) Drafters participate. LI Xiu-fen (China Testing Technology Research Institute)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 3.1 Principle of Comparative bridge (1) 3.2 Comparison of the bridge structure (3) 4 metering performance requirements (3) 4.1 accuracy class (3) The basic error structure and each arm resistance 4.2 compare the bridge (4) 4.3 The impact on the overall insulation resistance error (4) 5 General technical requirements (4) 5.1 Appearance and line inspection (4) 5.2 Insulation resistance (4) 5.3 Dielectric strength test (5) 6 Control of measuring instruments (5) 6.1 Verification condition (5) 6.2 Verification Project (6) 6.3 Verification Methods (6) 6.4 Verification Results Processing (9) 6.5 test cycle (9) Appendix A principle of derivation (10) Appendix B ratio arm ratio derivation (13) Appendix C Σ ri calculated (see Table) (14) Appendix D DC Comparator Bridge Assay method (15) Appendix E DC Comparator Bridge overall calibration method (23) Appendix F test original record format (24) Appendix G Verification Certificate page format (26) Appendix H test results in the notice page format (28) DC Comparator Bridge test procedures

1 Scope

The order applies to DC Comparator Bridge (hereinafter referred to as comparative bridge) initial verification, subsequent verification and use of test. This procedure does not apply to ordinary single and double bridge, bridge automatic, semi-bridge DC comparator bridge, digital direct Verification galvanic bridges and other special purpose bridge.

2 Citations

The regulations cited in the following documents. JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF1015-2002 measuring equipment type evaluation and type approval - Generic specification GB/T 4793-2008 Measurement, Control and Laboratory Safety Requirements for Electrical Equipment GB 3930-2008 resistance measurement with DC bridge JJG 166-1993 DC resistance test procedures JJG 125-2004 DC bridge test procedures IEC 60564-1997 measuring resistance with a DC bridge When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Overview

3.1 Comparison of the bridge principle Comparison of the bridge is designed for single-use special test laboratory and DC bridge DC resistance DC resistance boxes and other equipment bridge. The principle circuit shown in Fig. Figure 1. Rx --- measured resistance; RN --- included standard resistor having a nominal value of. 1Ω ~ 0.1MΩ; R1 --- ratio arm resistance by six measuring plate. 10 × (1000 100 10 1 0.1 0.01) Ω consisting of reading discs M1; m1 --- equivalent balance disc, measured by the three discs. 10 × (1 0.1 0.01) Ω composition; R2 --- ratio arm resistance by six measuring plate. 10 × (1000 100 10 1 0.1 0.01) Ω composition ratio arm M2; K0 --- arm changer switch, in comparison bridge arm equivalent adjustment to make R1 and R2 are reversed; Kr --- top of the bridge for access switch, Kr were measured twice conductor resistance can be obtained at position 1 and 2 rx resistance; KE --- Power reversing switch; C1, P1, P2, C2 --- measured resistance Rx current and voltage terminals button; ......

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