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The coming into force of the new IEC 61439 series of international standards, adopted in Europe (with possible variations) as EN 61439, has changed the requirements for low-voltage power distribution boards in the European Economic Area. It significantly impacts electrical power distribution in buildings and industrial applications. The entirely restructured series of standards came into force on June 1, 2010. After the end of the transition period, the IEC 61439 series replaced the previous IEC 60439 series of standards. == General information == The new IEC 61439 series of international standards defines clear regulations for low-voltage switchgear and controlgear assemblies. It specifies the safety requirements for the electrical equipment of planners, system engineers, electricians and end users in order to define protection objectives for people and industrial plants with regards to electrical installations.thumb A low-voltage switchgear and controlgear assembly is defined as the combination of one or more low-voltage switching devices and associated equipment for control, measuring, signaling, protecting and switching. Low-voltage switchgear and controlgear assemblies includes: Arc fault detection device (AFDD), circuit breakers, miniature circuit breakers, residual current protective devices, cables, terminals, etc. The standard applies for power distribution boards, switching and control systems, meter cabinets and distribution cabinets in residential and non-residential buildings, distribution boards for construction sites and power distribution cabinets as well as for controlgear assemblies in special areas. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IEC 61439 standard」の詳細全文を読む スポンサード リンク
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