IEC 60439-3 Edition 1.2-2001
低压开关设备和控制设备装置.第3部分:对安装在不熟练人员使用场所的低压开关设备和控制设备装置的特殊要求.配电盘
Low-voltage switchgear and controlgear assemblies - Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use - Distribution boards
- 标准号
- IEC 60439-3 Edition 1.2-2001
- 发布日期
- 2001年05月
- 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 61439-3-2012
- 适用范围
- Replace the second note by: This standard gives supplementary requirements for such enclosed distribution boards (DBU), which are stationary, type tested assemblies (TTA) for indoor use, containing protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use. Control and/or signalling devices may also be included. They are for use on a.c., with a nominal voltage to earth not exceeding 300 V. The outgoing circuits contain short-circuit protective devices, each having a rated current not exceeding 125 A with a total incoming load current not exceeding 250 A. NOTE The nominal voltage to earth in an IT system is taken as the nominal voltage of the system. Unskilled persons normally have access to these assemblies, e.g. for switching operations and for replacing fuse-links.