IEC 62271-203-ed.3.0

Detail information

Designation: IEC 62271-203-ed.3.0

Publication date: 30/05/2022

Pages: 157

Country: International technical standard

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Anotation

IEC 62271-203:2022 specifies requirements for gas-insulated metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating gas or gas mixture other than air at atmospheric pressure, for alternating current of rated voltages above 52 kV, for indoor and outdoor installation, and for service frequencies up to and including 60 Hz. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the document has been aligned with IEC 62271-1:2017; - beside SF6 also alternative gases have been implemented where needed; - the terms and definitions have been updated and terms not used have been removed; - Subclause 6.16 “Gas and vacuum tightness” has been updated; - Subclause 6.16.3 “Closed pressure systems”: Two classes of gas has been introduced: - GWP <= 1 000 - GWP > 1 000 and the tightness requirements for type tests for gasses with GWP > 1 000 has been reduced from 0,5 % to 0,1 % per year per gas compartment; - Subclause 6.108 “Interfaces”: Typical maximum pressures in service for interfaces connected to GIS have been defined; - Subclauses 7.102 through 7.108 have been restructured; - Subclause 7.107 “Corrosion test on earthing connections” has been updated; - Subclause 7.108 “Corrosion tests on sealing systems of enclosures and auxiliary equipment” has been updated; - Annex F ‘Service Continuity’ has been modified and aligned with the recommendations of CIGRE WG B3.51. LIEC 62271-203:2022 specifie les exigences pour lappareillage sous enveloppe metallique a isolation gazeuse dont lisolation est realisee, au moins partiellement, par un gaz isolant ou un melange de gaz autre que lair a la pression atmospherique, pour courant alternatif de tensions assignees superieures a 52 kV, pour linstallation a linterieur et a lexterieur, et pour des frequences de service inferieures ou egales a 60 Hz. Cette troisieme edition annule et remplace la deuxieme edition parue en 2011. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: - le document a ete aligne sur l’IEC 62271-1:2017; - outre le SF6, des gaz alternatifs ont egalement ete mis en ouvre lorsque necessaire; - les termes et definitions ont ete actualises et les termes non employes ont ete supprimes; - le paragraphe 6.16 “Etancheite au gaz et au vide” a ete actualise; - paragraphe 6.16.3 ‘’Systemes a pression autonome’’: Deux classes de gaz ont ete presentees: - PRC <= 1 000 - PRC > 1 000 et les exigences detancheite relatives aux essais de type pour des gaz avec PRC > 1 000 ont ete reduites de 0,5 % a 0,1 % par an et par compartiment de gaz; - paragraphe 6.108 “Interfaces”: des pressions maximales types en service pour les interfaces reliees au PSEM ont ete definies; - les paragraphes 7.102 a 7.108 ont ete restructures; - le paragraphe 7.107 “Essai de corrosion sur les connexions de terre” a ete actualise; - le paragraphe 7.108 ‘’Essais de corrosion sur les systemes detancheite des enveloppes et des equipements auxiliaires’’ a ete actualise; - l’Annexe F ‘’Continuite de service’’ a ete modifiee et alignee sur les recommandations du groupe de travail B3.51 du CIGRE.