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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。
2 |$ |, o; i6 H1 kUL153:" A M# x) ^) m ^( P' f
25 Insulating Materials
( f" Z! e. _; C' R# @2 ]* f7 i25.2 An insulating lining or barrier of vulcanized fiber or similar materials used where spacing does not
4 }* z; c. K8 Q6 Z# [. Gotherwise comply with the requirement shall not be less than 1/32 inch (0.8 mm) thick, and shall be so% p; S! K( h& o4 h) S M
located 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. |
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