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发表于 2018-5-21 10:54
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8 X9 H1 Y+ L* O1 M: f首先确定, I 类灯具 和 I类结构是不同概念,一类灯具是要把metal enclosure 接到 保护接地terminals 上(定义),
. X' T% R6 ~2 z7 e+ g- ]I 类 结构说个例子,驱动,全部是塑料外壳,有保护接地terminal 接到SPD,没有接到塑料外壳上,这种情况是可能的' F! t, {/ w% Z+ O; J: a- @% }
Controlgear with an integrated SPD requiring connection to earth shall be marked with the
' K, |4 Q4 n6 M; qprotective earth symbol according to IEC 60417-5019: 2006-08.
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, R3 c% ? ^$ }" {. f! V2 A4 |" m$ ]60598-1 中class II 中的定义 Note,也说这情况是存在的
. l2 f- g2 r8 a* C0 iNote 4 to entry: If a luminaire with double insulation and/or reinforced insulation throughout has a protective earthing terminal or a protective earthing contact, it is class I construction
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