IEC 60947-9-1:20 19涵盖低压灭弧装置，以下简称AQD，旨在消除低压组件（通常是根据IEC？61439系列的低压开关设备和控制设备组件）中的电弧故障，通过创建较低阻抗的电流路径，使起弧电流转移到新的电流路径。这个新的电流路径被维持，直到短路保护装置（SCPD）中断短路电流。 AQD安装在低压组件中，连接到主电路，最好尽可能靠近所有主电源。 它们的额定电压不超过1？000？V？AC还是1？500？V？DC.

IEC 60947-9-1:2019 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 accordance with the IEC？61439 series), by creating a lower impedance current path, to cause the arcing current to transfer to the new current path. This new current path is maintained until a short-circuit protection device (SCPD) interrupts the short-circuit current.
AQDs are installed in low-voltage assemblies, connected to the main circuit, preferably as close as possible to all primary power sources.
Their rated voltage does not exceed 1？000？V？AC or 1？500？V？DC.