IEC 60947-4-3:2020 低压开关设备和控制设备第4-3部分:接触器和电动机起动器半导体控制器和半导体 非电机负载用接触器

标准编号：IEC 60947-4-3:2020

中文名称：低压开关设备和控制设备第4-3部分:接触器和电动机起动器半导体控制器和半导体非电机负载用接触器

英文名称：Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - Semiconductor controllers and semiconductor contactors for non-motor loads

发布日期：2020-07-14

标准范围

IEC 60947-4-3:20 20（E）适用于用于连接到额定电压不超过1 000 V AC的电路的非电机负载的半导体控制器和半导体接触器。它涵盖了它们的用途:-用于在接通状态和断开状态之间改变AC电路的状态的操作；-有或没有旁路开关装置；-作为控制器，用于减小RMS AC电压的幅度。这第三版取消并取代了2014年出版的第二版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)范围排除；(b)对说明和执行段落的编辑更正；c)与以下相关的安全性方面:-一般方面；-有限能量电路；-电子电路；d)提及专用接线附件；e)功耗测量；f)符合IEC 60947-1:20 20；g)适当时与IEC 60947-4-2保持一致。

IEC 60947-4-3:2020(E) applies to semiconductor controllers and semiconductor contactors for non-motor load intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC.
It covers their use:
– for operations of changing the state of AC electric circuits between the ON-state and the OFF-state;
– with or without bypass switching devices;
– as controller, for reducing the amplitude of the RMS AC voltage.
This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) scope exclusions;
b) editorial correction of notes and hanging paragraphs;
c) safety aspects related to:
- general aspects;
- limited energy circuits;
- electronic circuits;
d) mention of dedicated wiring accessories;
e) power consumption measurement;
f) alignment to IEC 60947-1:2020;
g) alignment with IEC 60947-4-2 when appropriate.

标准预览图