低压开关设备和控制设备.第1部分:总则

[中文适用范围]： 注 1：在本标准中，术语“组件”（见 3.1.1）用于低压开关设备和控制设备组件。 IEC 61439 的这一部分规定了低压开关设备和控制设备组件的定义并规定了使用条件、结构要求、技术特性和验证要求。本标准仅适用于低压开关设备和控制设备组件（组件），仅当相关组件标准要求如下时： ?C 组件，其额定电压在交流时不超过 1000V，在交流时额定电压不超过 1500V。直流； ?C 带或不带外壳的固定或可移动组件； ?C 组件，用于与电能的发电、传输、分配和转换以及电能消耗设备的控制； ?C 组件设计用于特殊使用条件@例如船舶@铁路车辆@用于爆炸性环境中的设备@和家庭应用（由非技术人员操作）@，前提是遵守相关的具体要求；注 2：IEC 60092-302 涵盖了船舶组件的补充要求。注 3：IEC 60079 系列和 IEC 61241 系列涵盖了爆炸性环境中成套设备的补充要求。 ?C 组件设计用于机器的电气设备。 IEC 60204 系列涵盖了构成机器一部分的组件的补充要求。本标准适用于所有组件，无论它们是一次性设计、制造和验证的，还是完全标准化和批量制造的。制造和/或组装可以由原始制造商以外的地方进行（见 3.10.1）。本标准不能单独用于指定组件或用于确定符合性的目的。本标准不适用于符合相关产品标准的单个装置和独立部件@，例如电机启动器@熔断器开关@电子设备@等。 [外文原描述]： IEC 61439-1:2009 lays down the definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies. This standard applies to low-voltage switchgear and controlgear assemblies (ASSEMBLIES) only when required by the relevant ASSEMBLY standard. This first edition of IEC 61439-1 standard cancels and replaces the fourth edition of IEC 60439-1:1999. Significant technical changes with respect to the last edition of IEC 60439-1. IEC 61439-1 is a pure "general rules" standard to be referred to by subsidiary product parts of the IEC 61439 series; the product standard replacing IEC 60439-1 is IEC 61439-2; the discrimination between type-tested assemblies (TTA) and partially type-tested assemblies (PTTA) is eliminated by the verification approach; three different but equivalent types of verification of requirements are introduced: verification by testing, verification by calculation/measurement, or verification by satisfying design rules; the requirements regarding temperature rise have been clarified; the rated diversity factor (RDF) is covered in more detail; requirements from the standard for empty enclosures for assemblies (IEC 62208) have been incorporated; the whole structure of the standard is aligned with its new function as "general rules" standard. However, when a dated reference to IEC 60439-1 is made in another Part of the IEC 60439 series of assembly standards not yet transferred into the new IEC 61439 series, the superseded IEC 60439-1 still applies.