|
给出结论要有理有据。下面是引用UL标准中的一段话:
3 C- U2 g# Z. g8 celectrical (prevention of dielectric breakdown and
, n/ A1 {. ^- `9 z1 q2 Y+ o7 Wexcessive leakage current), mechanical without impact (functional support of electrical conductors and& _% z q V+ P/ ~
supporting members), mechanical with impact (for prevention of accessibility to live parts and for
/ U: ?/ C8 u6 e! y, wcontinued maintenance of electrical spacings). K: I k# Q1 v& a& u9 f, w- R
下面的是引用UL网站的:" J9 V( Y1 M6 r; E
Relative temperature index (RTI)6 l @, h7 C* z" B0 F& f
, r* H$ O% C% U1 mMaximum 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.
- L9 f8 U' Z6 J1 K) p1 {6 _7 BRTI electrical7 v7 ?/ w1 s% x- R
: w, F; v3 {4 t$ W4 j
The electrical RTI is associated with critical electrical insulating properties.; a! y8 m3 G9 B( o: S; b, R$ v' X
RTI mechanical impact/ l4 F' D6 t- ^" N9 d/ n
3 x" P8 R8 `' S, w
The mechanical impact RTI is associated with critical impact resistance, resilience and flexibility properties.# }- l* q( p3 J( L5 \# ^3 L/ f8 O
RTI mechanical strength& n8 ?- z2 H+ R5 n5 \6 R* `
* h$ V4 I/ S. \& }5 v" oThe mechanical strength (mechanical without impact) RTI is associated with critical mechanical strength where impact resistance, resilience and flexibility are not essential. |
|