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1. Easily touched surfaces of equipment RATED for a maximum ambient temperature above 40 °C+ T7 v& F* _' e8 h
are permitted to exceed the values of Table 19 in NORMAL CONDITION, and to exceed 105 °C in
4 ~) t( N6 ]; Y) YSINGLE FAULT CONDITION, by not more than the amount by which the maximum RATED% ~+ E" i! T0 p) ^. v8 F
temperature exceeds 40 °C.* i$ q E: P3 w# O" F
2.If easily touched heated surfaces are necessary for the processing or heating of materials, or) u+ L6 B* v5 o
where otherwise not avoidable, they are permitted to exceed the values of Table 19 in NORMAL4 J( w" m9 U) V: `8 I+ y
CONDITION and to exceed 105 °C in SINGLE FAULT CONDITION, provided that they are) m' N- o" ^- G8 B
recognizable as such by appearance or function or are marked with symbol 13 of Table 1.
$ q' F1 ?% q' O5 w9 ^. _Equipment heated by its environment to temperature values exceeding the values in Table 19
8 \- ]+ p2 w; k4 C3 P+ C, @+ Din NORMAL CONDITION and 105 °C in SINGLE FAULT CONDITION need not to be marked with/ G* u& i* _: I& R7 r! z1 }) T! w
symbol 13" K) n, m: ~1 v# n. Y8 L: s
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- Q8 z: h+ B* P9 e+ y: P. f4 Y
( g4 V; t% k0 U% ?2 l @ |
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