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EN IEC 60947-3-2021
中文名称：低压开关柜和控制柜 - 第3部分:开关 隔离开关 隔离开关和保险丝组合单元
英文名称：Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
| 中国标准分类(CCS)： | K43 |
| 国际标准分类(ICS)： | 29.130.20 |
| 发布日期： | 2020-5-27 |
| 实施日期： | |
| 页数： | |
| 标准状态： | 现行 |
| 点击数： | 0 |
| 更新日期： | 2021-09-18 |
| 适用范围： | IEC 60947-3:2020 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC. This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:;addition of critical load current tests for DC switches (see 9.3.9);addition of requirements for a conditional short-circuit rating for disconnectors, switches, and switch-disconnectors protected by circuit-breakers (see 9.3.7.2);addition of new categories for high-efficiency motors switching (see Annex A);addition of new Annex E for connection to aluminium conductors;addition of new Annex F for power losses measurement. |
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