IEC 60947-4-3 Edition 1.1-2007
低压开关设备和控制设备.第4-3部分:电流接触器和电动机起动器 非电动机负载用交流半导体控制器和电流接触器

Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - AC semiconductor controllers and contactors for non-motor loads

IEC 60947-4-3 Edition 1.1-2007 发布历史

This part of IEC 60947 applies to a.c. semiconductor non-motor load controllers and contactors intended for performing electrical operations by changing the state of a.c. electric circuits between the ON-state and the OFF-state. Typical applications are given in table 2. As controllers, they may be used to reduce the amplitude of the r.m.s. a.c. voltage on the load terminals from that of the applied voltage – either continuously or for a specified period of time. The half-wave period of the a.c. wave form remains unchanged from that of the applied voltage. They may include a series mechanical switching device and are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. This standard characterizes controllers and contactors for use with or without bypass switching devices. The semiconductor controllers and contactors dealt with in this standard are not normally intended to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 8.2.5) should form part of the installation but not necessarily of the controller itself. In this context, this standard gives requirements for semiconductor controllers and contactors associated with separate short-circuit protective devices. This standard does not apply to ? operation of a.c. and d.c. motors; ? low-voltage a.c. semiconductor motor controllers and starters covered by IEC 60947-4-2; ? electronic a.c. power controllers covered by IEC 60146; ? all-or-nothing solid-state relays. Contactors and control-circuit devices used in semiconductor controllers and contactors should comply with the requirements of their relevant product standard. Where mechanical switching devices are used, they should meet the requirements of their own IEC product standard and the additional requirements of this standard.

IEC 60947-4-3 Edition 1.1-2007由国际电工委员会 IX-IEC 发布于 2007-01-01。

IEC 60947-4-3 Edition 1.1-2007 在中国标准分类中归属于: K31 低压配电电器，在国际标准分类中归属于: 29.130.20 低压开关装置和控制器。

IEC 60947-4-3 Edition 1.1-2007的历代版本如下：

• 2007年01月01日 IEC 60947-4-3 Edition 1.1-2007 低压开关设备和控制设备.第4-3部分:电流接触器和电动机起动器 非电动机负载用交流半导体控制器和电流接触器

IEC 60947-4-3 Edition 1.1-2007 低压开关设备和控制设备.第4-3部分:电流接触器和电动机起动器 非电动机负载用交流半导体控制器和电流接触器 于 2014-05-01 变更为 IEC 60947-4-3-2014 低压开关装置和控制装置.第4-3部分:接触器和电动机起动器.非电动机负载用交流半导体控制器和接触器。

非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 IEC 60947-4-3 Edition 1.1-2007 前三页，或者稍后再访问。

注意： 点击下载后，生成下载文件时间比较长，请耐心等待......

标准号

IEC 60947-4-3 Edition 1.1-2007

发布日期

2007年01月01日

实施日期

废止日期

无

中国标准分类号

K31

国际标准分类号

29.130.20

发布单位

IX-IEC

代替标准

IEC 60947-4-3-2014

适用范围

This part of IEC 60947 applies to a.c. semiconductor non-motor load controllers and contactors intended for performing electrical operations by changing the state of a.c. electric circuits between the ON-state and the OFF-state. Typical applications are given in table 2. As controllers, they may be used to reduce the amplitude of the r.m.s. a.c. voltage on the load terminals from that of the applied voltage – either continuously or for a specified period of time. The half-wave period of the a.c. wave form remains unchanged from that of the applied voltage. They may include a series mechanical switching device and are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. This standard characterizes controllers and contactors for use with or without bypass switching devices. The semiconductor controllers and contactors dealt with in this standard are not normally intended to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 8.2.5) should form part of the installation but not necessarily of the controller itself. In this context, this standard gives requirements for semiconductor controllers and contactors associated with separate short-circuit protective devices. This standard does not apply to ? operation of a.c. and d.c. motors; ? low-voltage a.c. semiconductor motor controllers and starters covered by IEC 60947-4-2; ? electronic a.c. power controllers covered by IEC 60146; ? all-or-nothing solid-state relays. Contactors and control-circuit devices used in semiconductor controllers and contactors should comply with the requirements of their relevant product standard. Where mechanical switching devices are used, they should meet the requirements of their own IEC product standard and the additional requirements of this standard.

IEC 60947-4-3 Edition 1.1-2007 中可能用到的仪器设备