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如题,在IEC 60335最新的标准里面,对于回形符号只说明是 引用 IEC 60417-5172(2003-02)。; }8 R5 O6 {. b
但是IEC 60417里面没有关于尺寸的任何描述,
) k7 k) C1 Y/ H3 m5 K5 yTo identify equipment meeting the safety requirement specified for Class II equipment according to IEC 61140
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' d' s, O4 B' O( L" i \后来查看了IEC 61140,发现里面说明是引用 symbol no. 5172 of IEC 60417-2.
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Clas II equipment shall be marked with the graphical symbol no.5172 of IEC 60417-2,placed adjacent to the supply informaiton , e.g. on the rating label ,in such a way that it is obvious that the symbol is part of the technical information and can in no way be confused with the manufacturer's name or other identification marks P$ G& l; C8 |; u
6 T) @/ Q# }) i4 v) h6 v/ [继续查阅IEC 60417-2,找到尺寸描述." O! h4 d C. u! {% U2 O v
1 \; H! h K5 `4 ^* [" [问题来了, 按照IEC 60417-2的要求 ,回形符号的真实尺寸 长=宽=52mm .这么大的:funk:,而且没说内部与外部的比例关系。 O3 E$ ~5 Q7 o& R; r" ^6 W1 J) F4 ^# j/ e
貌似所有产品标记这个符号的时候不是按照这样的,问过别人,得到的答案是 内外长度比例1:2,。偶翻了家电标准也没找到这个说法,只在电动工具IEC 60745-1 里面找到关于这个符号的详细尺寸,但是人家这个标准压根就没提参考IEC 604173 k: R* z$ ^, z; x2 T
The dimensions for the symbol for class II tool shall be such that the length of the sides of the outer square is about twice the length of the sides of the inner square.The length of the sides of the outer square shall not be less than 5mm, unless the largest dimension of the tool does not exceed 15cm, in which case the dimensions of the symbol may be reduced , but the length of the sides of the outer square shall not be less than 3mm' M1 H! o5 \7 ?
& S/ q5 R) D( h2 C- Z |所以在家电产品上,这个尺寸要求从哪能查到依据?[s:44][s:44]" B$ c0 {5 w$ m. M; v
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