IEC 60947-4-2:2011 pdf – Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters

IEC 60947-4-2:2011 pdf – Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters. 5.3.4.5 Periodic duty Subclause 4.3.4.5 of IEC 60947-1:2007 applies. 5.3.4.6 Duty cycle values and symbols For the purpose of...