Changes in IEC MV metal-enclosed switchgear standard Revision currently at FDIS stage will be published under new number IEC 62271-200 instead of IEC 60298 introduces new definitions and designations cancels widely-used categories as "cubicle", "compartmented" & "metal-clad" will be more "customer value oriented"

Main reasons for the revision current issue is 13 years old based on technologies more than 30 years old A revision to better cover some solutions on the market to improve wording of basic requirements to value experience gained on internal arc

Schedule and miscellaneous topics Start early in year 2000 (decided in Kyoto 1999) introduction of characteristics for enclosure clarification of: compartments and their access partitions, shutters, bushings... pressure test when pressure relief device

User's values classifications Service continuity level when opening accessible compartment sorted considering "Loss of Service Continuity" without reference to technological solutions "metal-enclosed" conditions when opened provided by metallic partitions (PM class)

Internal Arc Classification Optionnal rating, to be declared by manufacturer (no more "agreement") current, duration, accessibility (faces, type) Type test completely defined from ratings and installation instructions keeping the well known acceptance criteria providing rules on all test parameters

Changes on the market How to define the needs: need for compartments? access to some functions? continuity of service while accessing? How to describe an offer: existing and accessible compartments classifications (LSC1-2A- 2B, PI-M, IAC...)