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1. Easily touched surfaces of equipment RATED for a maximum ambient temperature above 40 °C
* Q7 i, N9 A6 j" \$ y- @" o v, ?are permitted to exceed the values of Table 19 in NORMAL CONDITION, and to exceed 105 °C in
) O1 a- J% E! q7 BSINGLE FAULT CONDITION, by not more than the amount by which the maximum RATED
i& f/ y% d1 y2 Btemperature exceeds 40 °C.: z% B8 J" }! c2 w; }
2.If easily touched heated surfaces are necessary for the processing or heating of materials, or5 J( y) k* `0 |# B7 j# w
where otherwise not avoidable, they are permitted to exceed the values of Table 19 in NORMAL$ J( @3 i6 C2 z+ r
CONDITION and to exceed 105 °C in SINGLE FAULT CONDITION, provided that they are7 G4 W, [; i0 ~ o/ p9 y5 t
recognizable as such by appearance or function or are marked with symbol 13 of Table 1.
/ t7 W* E+ Z! u9 hEquipment heated by its environment to temperature values exceeding the values in Table 19
) N/ a0 {; L' \! @7 Qin NORMAL CONDITION and 105 °C in SINGLE FAULT CONDITION need not to be marked with1 z. c' m6 g0 h' j U
symbol 13
3 w& k# q8 t6 a$ T$ m! x# p我就想问下红色的两句是什么意思，谢谢,理解起来很纠结$ D) U" a0 ^; f- ]& U' T" b
1 {/ `* r5 Q; a7 Y
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发表于 2016-5-3 17:58
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