|
这个不需要认证的,直接可以作为绝缘材料,在标准中叫vulcanized fiber。* F7 B/ U) E8 K# z( ~
UL153:
* I/ q% {* X. m- f2 i& @25 Insulating Materials
/ Y6 T3 S. _' F5 u( g+ x, V25.2 An insulating lining or barrier of vulcanized fiber or similar materials used where spacing does not, l. B1 q& D \/ _
otherwise comply with the requirement shall not be less than 1/32 inch (0.8 mm) thick, and shall be so
% H0 h6 W6 U( L5 J0 h* F! ^) H3 Jlocated that it is not adversely affected by arcing, except that vulcanized fiber not less than 1/64 inch (0.4 mm) thick is able to be used in addition to an air spacing of not less than 50 percent of the spacing required for air alone. |
评分
-
查看全部评分
|