DIN IEC 17B-893-CDV (1998-08)被替代
Low-voltage Switchgear And Controlgear - Part 4: Contactors And Motor-starters; Section 2: Ac Semiconductor Motor Controllers And Starters; Draft Amendment To Iec 60947-4-2:1996
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
