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哇!機會難得!請教開孔的問題
& |: r+ V( N. x; i) b) a如何判定頂or側部開孔滿足5angle(UL60950 Figure 4E)?! Q) o3 P- h/ R. n( B
0 ?) A. z" X( n/ h& D
UL60950-1 4.6.1 提到:- N2 h3 a1 H: |, I7 L/ [5 ], [7 C' ~
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.
% ?. W, T, O5 _+ _' b- a5 F; S如何判定頂部開是否滿足 5angle(UL60950 Figure 4E)呢?
& S- n$ n) n, U- r" m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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