Ptt 大爆卦 | IEC 61439-2:2011 - 前往 https://standards.globalspec.com/std/14385888/en-iec-61439-2

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CENELEC - EN IEC 61439-2 | GlobalSpec

This part of IEC 61439 defines the specific requirements for the power switchgear and controlgear assembly (abbreviated 'PSC-assembly' ...

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