IEC_TS_62271-304-2008_cor1-2010.pdf

January 2010 January 2010 IEC/TS 62271-304(First edition 2008)High-voltage switchgear and controlgear Part 304:Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV to be used in severe climatic conditions CEI/TS 62271-304(Premire dition 2008)Appareillage haute tension Partie 304:Classes de construction pour lappareillage dintrieur sous enveloppe pour tensions assignes partir de 1 kV jusqu 52 kV inclus pour usage sous conditions climatiques svres C O R R I G E N D U M 1 Page 12 9.2 Electrical diagnostic procedure Replace the existing Figure 3 by the following new figure:Phase A Phase B Phase C 30 s 30 s 30 s 1 h 1 h 1 h Voltage 3 Ur 3 Ur/Time IEC 215/10 Figure 3 Power-frequency withstand voltage test with high humidity after ageing test January 2010 January 2010 Page 28 9.2 Mthode de diagnostic lectrique Remplacer la Figure 3 existante par la nouvelle figure suivante:Phase A Phase B Phase C 30 s 30 s 30 s 1 h 1 h 1 h Tension 3 Ur 3 Ur/TempsIEC 215/10 Figure 3 Essai de tension de tenue frquence industrielle sous forte humidit,aprs essai de vieillissement