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哇!機會難得!請教開孔的問題- J- Q' Q, ?/ Q8 i9 s3 @+ V3 V
如何判定頂or側部開孔滿足5angle(UL60950 Figure 4E)?$ r! Y& p# x5 |+ w1 _
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UL60950-1 4.6.1 提到:# b! W6 d. ?$ f1 E+ \5 C N8 X
Where a portion of the side of a FIRE ENCLOSURE falls within the area traced out by the 5 angle in figure 4E, the limitation in 4.6.2 on sizes of openings in bottoms of FIRE ECLOSURES also apply to this portion of the side.
8 @" n6 }% j; O W, f. D如何判定頂部開是否滿足 5angle(UL60950 Figure 4E)呢?
+ M! a. t8 E9 C* k! l/ t有相關的軟件嗎?還是用目測拉5度的方法。請賜教。 |
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