标准摘要
[中文适用范围]: IEC 60364 第 4-43 部分描述了如何通过一个或多个设备保护带电导体,以便在发生过载(参见第 433 条)和短路(参见第 434 条)时自动中断供电,但过流情况除外。根据第 436 条或满足第 433.4、443.5 或 443.3 条中描述的条件进行限制。此外,过载保护和短路保护应根据第 436 条进行协调。 注 1:根据第 434 条对带电导体进行过载保护,也应考虑对可能导致类似于以下幅度的过电流的故障进行保护:过载电流。注2:本标准的要求没有考虑外部影响。对于与外部影响条件相关的保护措施的应用,请参见 IEC 60364-4-41 的 410.3.4 和 IEC 60364-4-42 的第 422 条。注3:根据本标准对导体的保护并不一定保护连接到导体的设备。 [外文原描述]: Describes how live conductors are protected by one or more devices for automatic interruption of the supply in the event of overload (see clause 433) and short-circuits (see clause 434) except in cases where the overcurrent is limited in accordance with clause 436 or by the conditions described in 433.4, 443.5 or 443.3 are met. Further, protection against overload and against short-circuits shall be co-ordinated in accordance with clause 436. The contents of the corrigendum of August 2002 have been included in this copy.
英文名称Electrical installations of buildings - Part 4-43: Protection for safety - Protection against overcurrent