PC电源侧面网状风孔要求
据IEC609504.6.1对侧面开孔的要求，说是需要设计成百叶窗之类的结构，来防止外来物的进入，
但现在的PC电源网状出风散热孔都垂直的，为什么也可以符合要求呢？求各位大神指点
垂直有尺寸要求的吧 4.6.1顶部与侧面开孔有5条要求是或的关系，如果不满足百叶窗，可以按照5mm开孔或者5°投影来判定 是不是PC电源是内装的，开孔的问题应该有外部外壳保证 垂直的开孔尺寸符合标准要求也是可以接受的 Compliance is checked by inspection and measurement. Except for that portion of the side of
a FIRE ENCLOSURE that is subject to the requirements of 4.6.2 (see above paragraph), any one
of the following is considered to satisfy the requirements (other constructions are not
excluded):
− openings that do not exceed 5 mm in any dimension;
− openings that do not exceed 1 mm in width regardless of length;
− top openings in which vertical entry is prevented (see Figure 4B for examples);
− side openings provided with louvres that are shaped to deflect outwards an external
vertically falling object (see Figure 4C for examples);
− top or side openings, as shown in Figure 4D, that are not located vertically, or within a
volume V bounded by a 5° vertical projection up to the size of opening L, above bare
conductive parts:
• at HAZARDOUS VOLTAGE, or
• that present an energy hazard within the meaning of 2.1.1.5.
画重点：
any one
of the following is considered to satisfy the requirements (other constructions are not
excluded)
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