|
1. Easily touched surfaces of equipment RATED for a maximum ambient temperature above 40 °C3 ~6 J+ p8 D# }- N) b3 _' ^' w
are permitted to exceed the values of Table 19 in NORMAL CONDITION, and to exceed 105 °C in
/ a, s0 ]- W0 T- `1 M1 cSINGLE FAULT CONDITION, by not more than the amount by which the maximum RATED! A0 Q) L& f6 A3 _- E* {1 |
temperature exceeds 40 °C.' R! i _' o5 f7 Z
2.If easily touched heated surfaces are necessary for the processing or heating of materials, or1 m3 N8 J% D' n: r% j+ u% Y4 t
where otherwise not avoidable, they are permitted to exceed the values of Table 19 in NORMAL, a, E* t" T" v6 E1 p
CONDITION and to exceed 105 °C in SINGLE FAULT CONDITION, provided that they are
1 |+ O# Q8 s# m( nrecognizable as such by appearance or function or are marked with symbol 13 of Table 1.+ C' I1 a1 C8 P1 a3 j7 l0 x, x9 B, N
Equipment heated by its environment to temperature values exceeding the values in Table 19* p: {1 u; P+ o! k
in NORMAL CONDITION and 105 °C in SINGLE FAULT CONDITION need not to be marked with2 \& a: Z& M) f6 P U N
symbol 13
0 v$ ~" Z" T( u/ L) Y, n我就想问下红色的两句是什么意思,谢谢,理解起来很纠结
( B) B2 Q: p9 I% n; |1 { G4 i' T8 E1 ]+ k
|
|