1、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 d
2、ition 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 CORRIGENDUM 1 Page 12 9.2 Electrical diagnostic procedure Replace the existing
3、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 U r3 U r / 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 U r3 U r / Temps IEC 215/10 Figure 3 Essai de tension de tenue frquence industrielle sous forte humidit, aprs essai de vieillissement
