大家来讨论: Dupont PA66 (101F) 是否适合用做变压器胶芯/骨架?

anquanbiao

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RTI str 这个应该不需要, 应该看RTI (Elec)...

Collin

引用第20楼anquanbiao于2008-03-03 16:58发表的  :
5 ^; f4 @: l# t( g- bRTI str 这个应该不需要, 应该看RTI (Elec)...

UL 1446中要求替代绝缘要考虑电气的和机械的温度指数(见附文), 但是在实际的UL绝缘系统中，则不一定. 比如P LEO(E20050)的B81绝缘系统，是Class B的， 但是包含Dupont的101F这种材料. 这个怎么理解?
( b4 j3 f" T1 a' n1 ~8 i+ P) P% |附:
1 v* @; E. G; @" M! n; a8.5.4 An encapsulant, ground, or interwinding insulation whose principal constituents (base resin, filler,
reinforcement, flame retardant, heat stabilizer, and anti-oxidant) are found, based on documentation, to
be identical in composition and proportion to those of an encapsulant, ground, or interwinding insulation
- ]' ^1 O6 w( `6 ^% Mpresently specified in an insulation system shall be accepted in the system without additional tests when
5 q5 z  d9 k& V/ t8 A6 j; @1 ^8 mboth the following conditions are met:
a) The assigned relative thermal indices (electrical and mechanical) and minimum thickness of
. p5 D& q+ w- J5 ]& ythe substitute material are equal to or greater than those of the presently specified material;
b) The substitute material differs from the presently specified material only with respect to
/ f3 m  Z* e) ~# T3 Cmolecular weight, lubricant, nucleating agent, anti-static agent, colorant, or particle size.