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给出结论要有理有据。下面是引用UL标准中的一段话：
7 b% k& p! l7 H8 p+ Z0 a1 W1 J2 Felectrical (prevention of dielectric breakdown and
0 q# r& k7 I( Y a0 h' O ~. ]* Wexcessive leakage current), mechanical without impact (functional support of electrical conductors and
, k5 M8 a- o5 t% m3 F1 o( d, ssupporting members), mechanical with impact (for prevention of accessibility to live parts and for
( [2 L- l6 u& @% Y, Ocontinued maintenance of electrical spacings)$ `1 j z4 [, j& G
下面的是引用UL网站的：" V. y1 m" J+ F* K H, z: I
Relative temperature index (RTI)! {3 t1 L. G0 n5 o0 [6 [' G
/ t3 c+ l0 k5 d+ j% e( G7 m- n7 o
Maximum service temperature for a material where a class of critical property will not be unacceptably compromised through chemical thermal degradation. This spans over the reasonable life of an electrical product, relative to a reference material having a confirmed, acceptable corresponding performance defined RTI.
+ f9 D% n4 x- c3 w( K3 A9 L; Z2 ZRTI electrical
' N7 ^$ ]: k0 v# ^3 v3 A" f. K4 E+ }& w: b/ a5 j2 d
The electrical RTI is associated with critical electrical insulating properties.; M r) _$ I6 w2 K" v9 j
RTI mechanical impact* @( ]$ A5 t* M
' g) a2 y$ u) H0 b8 M+ v EThe mechanical impact RTI is associated with critical impact resistance, resilience and flexibility properties., B. I( ~% @) o, c! L. |; i
RTI mechanical strength
/ m+ n+ U0 E7 f! ~
8 r& ^' j% F) P+ t0 UThe mechanical strength (mechanical without impact) RTI is associated with critical mechanical strength where impact resistance, resilience and flexibility are not essential. |
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发表于 2010-10-20 17:31
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