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引用第0楼安规007于2011-03-31 10:14发表的 讨论:EN60950-1:2006 顶部开孔问题 :
8 H. C7 i; Q, q0 A0 f9 ? K+ s在4.6.2章节中有如下内容:
2 ^# @5 g' e, C) _1 z8 Q! ~4 b* JCompliance is checked by inspection and measurement. Except for that portion of the side of# F1 ]$ {9 G$ n% c8 l% j! B8 Q
a FIRE ENCLOSURE that is subject to the requirements of 4.6.2 (see above paragraph), any one. T7 j% d' [, N
of the following is considered to satisfy the requirements (other constructions are not$ X6 E' ]+ ~+ k$ R5 O( j) M
excluded):
5 u8 q: C, `2 C$ ^9 N, Z....... $ E) m% o5 Z6 _8 V8 ]* K
纠正一下LZ说的章节,这段描述应该是4.6.1章节。这段要求是针对外壳的顶部和侧面开孔,只要符合其中一条都可以认为满足标准要求,但是侧面开孔还有附加的要求就是如果防火防护外壳侧面的某一部分是在按图4E以5°夹角投影出的面积内,则4.6.2关于防火防护外壳底部开孔的尺寸限制也适用于防火防护外壳侧面上的这一部分。' s! D; u% k; z: Z. M4 O! p
+ d6 P) C( F; ?+ W以上仅代表个人意见 |
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