R22b1_mainrept

R22b1_mainrept - Uncertainties of immunity measurements Tim...

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Unformatted text preview: Uncertainties of immunity measurements Tim Williams Stan Baker DTI-NMSPU project R2.2b1 Main report 2 This document is the final report of Project R2.2b1 of the National Measurement System Policy Unit’s programme for electrical measurement. The central aim of this programme is to provide a minimum national measurement infrastructure for electrical and related quantities in support of trade, quality assurance in industry, innovation and a range of important social activities. The aim of the project was to review and investigate the uncertainties associated with the test methods for conducted and radiated immunity to radio frequency interference. The project partners were Schaffner EMC Systems Ltd and Elmac Services. Schaffner are a leading manufacturer of EMC test equipment and operate a UKAS accredited calibration laboratory. They are represented on international standards committees concerned with EMC measurements. Elmac Services operate as a consultancy on all aspects of EMC, including test, measurement and design. Their principal is an EMC technical assessor for UKAS and SWEDAC. The project team and their responsibilities were as follows: • The project was managed by Ray Hughes of Schaffner EMC Systems. • The work programme and report were written and reviewed by Tim Williams of Elmac Services, and Stan Baker and Alex Piper of Schaffner EMC Systems. • The bulk of the experimental work was carried out by Dave Feasey of Schaffner EMC Systems. Grateful acknowledgement is made to Heinrich Ryser, Prof. Johan Catrysse and Monica Lüthi for their help with sources of other research, and to the UK EMC Test Laboratories Association for help in disseminating the results. © Schaffner EMC Systems 2002 Schaffner EMC Systems Ltd, Broadwood Test Centre, Rusper Road, Capel, Dorking, Surrey RH5 5HF Elmac Services, PO Box 111, Chichester, West Sussex PO19 5ZS Copies of this report are available for download from: http://www.schaffner.com http://www.elmac.co.uk http://www.emctla.org Main report Table of contents (The executive summary and best practice guide is distributed separately) 1 Introduction ...........................................................................................4 1.1 Background ...............................................................................4 1.2 Critical technical issues .............................................................4 1.2.1 Uncertainty sources ...................................................................5 1.2.2 Investigation of uncertainties ......................................................5 1.3 Areas not covered by this study .................................................6 1.4 Recommendations for further research ......................................6 2 Conducted immunity: IEC 61000-4-6...................................................7 2.1 A description of the standard .....................................................7 2.1.1 Test equipment: Clause 6 ..........................................................72....
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This note was uploaded on 06/07/2011 for the course EE 11 taught by Professor D during the Spring '11 term at Central Lancashire.

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R22b1_mainrept - Uncertainties of immunity measurements Tim...

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