High-voltage switchgear and controlgear - Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and includuing 52 kV to be used in severe climatic conditions

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IEC/TS 62271-304

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IEC/TS 62271-304 Cor 1

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IEC/TS 62271-304:2008 applies to indoor enclosed switchgear and controlgear complying with IEC 62271-200 and IEC 62271-201, intended to be used in service conditions more severe with respect to condensation and pollution than the normal service conditions specified in IEC 62271-1. This technical specification covers equipment where any of the insulation is e

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Appareillage à haute tension - Partie 304: Classes de construction pour l'appareillage d'intérieur sous enveloppe pour tensions assignées à partir de 1 kV jusqu'à 52 kV inclus pour usage sous conditions climatiques sévères