IEC 60449 Amd.1 Ed. 1.0被替代
Amendment 1 - Voltage bands for electrical installations of buildings
出版：International Electrotechnical Committee
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基本信息
标准编号： IEC 60449 Amd.1 Ed. 1.0
发布时间：1979/1/1 0:00:00
标准类别：Amendment
出版单位：International Electrotechnical Committee
标准页数：3
标准简介
Classification of d.c. installations according to their nominal voltage. As for a.c. a distinction has been made between two bands when the lower band relates mainly to installations whose voltages are restricted for safety reasons. Covers all voltages from zero up to and including 120 V ripple-free d.c.
本标准修订后的版本
