IEC 60947-9-1-2019 pdf download

IEC 60947-9-1-2019 pdf download.Low-voltage switchgear and controlgear – Part 9-1: Active arc-fault mitigation systems – Arc quenching devices. This part of IEC 60947 covers low-voltage arc quenching devices, hereinafter referred to as AQDs, which are intended to eliminate arc-faults in low-voltage assemblies (typically low- voltage switchgear and controlgear assemblies in...