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1. Easily touched surfaces of equipment RATED for a maximum ambient temperature above 40 °C' R9 m, u$ L! ]) h d' V# g, I0 n
are permitted to exceed the values of Table 19 in NORMAL CONDITION, and to exceed 105 °C in* h2 _- o6 g9 S7 x
SINGLE FAULT CONDITION, by not more than the amount by which the maximum RATED6 M9 f5 P# i3 N( N! a5 U
temperature exceeds 40 °C.
0 E c3 k1 v+ j1 P2.If easily touched heated surfaces are necessary for the processing or heating of materials, or
. M% {% }/ E) g4 H. _where otherwise not avoidable, they are permitted to exceed the values of Table 19 in NORMAL. [% w8 p0 J- ^3 A, P
CONDITION and to exceed 105 °C in SINGLE FAULT CONDITION, provided that they are5 c2 T( P$ r" f. L) j/ G
recognizable as such by appearance or function or are marked with symbol 13 of Table 1.* k7 B. d9 z u. f2 j
Equipment heated by its environment to temperature values exceeding the values in Table 190 W i1 P) v1 _8 ~+ ?" B
in NORMAL CONDITION and 105 °C in SINGLE FAULT CONDITION need not to be marked with. _4 i7 Y3 E& g+ b7 @- h
symbol 135 f9 R. N% T0 Q) @
我就想问下红色的两句是什么意思,谢谢,理解起来很纠结
' U G Y7 r* s' ]6 W$ f0 l+ D8 R* h/ W4 u; o* D
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