IEC 61643-12-2020 低壓電涌保護器--第12部分：低壓配電系統的電涌保護器--選擇和應用原則 Low-voltage surge protective devices – Part 12: Surge protective devices connected to low-voltage power systems – Selection and application principles

This part of IEC 61643 describes the principles for the selection, operation, location and
coordination of SPDs to be connected to 50/60 Hz AC power circuits, and equipment rated up to
1 000 V RMS.
These devices contain at least one non-linear component and are intended to limit surge
voltages and divert surge currents.
NOTE 1 Additional requirements for special applications are also applicable, If required.
NOTE 2 IEC 60364 and IEC 62305-4 are also applicable.
NOTE 3 This document deal only with SPDs and not with surge protection components (SPC) integrated inside equipment.dition 3.0 2020-05 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Low-voltage surge protective devices – Part 12: Surge protective devices connected to low-voltage power systems – Selection and application principles Parafoudres à basse tension – Partie 12: Parafoudres connectés aux réseaux à basse tension – Principes de choix et de mise en ？uvre IEC 61643-12:2020-05(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Co