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本帖最后由 tsunn 于 2013-2-2 11:59 编辑
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IEC60335-1的3.6.6对small parts的定义应该怎么理解?/ U* H$ x) U* S) X
small part, @3 X. ]0 s& c: \" }4 N$ G
part, where each surface lies completely within a circle of 15 mm diameter, or a part where/ ?( d3 e9 v( Y: a* A6 b% C; h
some of the surface lies outside a 15 mm diameter circle but in such a way that it is not$ n& N9 P8 K7 r! a* U( @9 ?
possible to fit a circle of 8 mm diameter on any of the surfaces" \. l, P& d3 w5 K2 u; f4 q
% x. u, A% \5 t3 m- `) ]! ^NOTE A part that is too small to grip and at the same time to be able to apply the glow-wire tip is shown in) ^) D! V& H9 [; C [9 w& f- ~$ ]5 [
example A in Figure 5. A part that is large enough to grip but that is too small to be able to apply the glow-wire tip/ y3 q p3 v4 j5 r
is shown in example B in Figure 5. A part that is not a small part is shown in example C in Figure 5.
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