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  :
7 h4 A! A# d" \7 g% r3 ]RTI 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?
( H; J: ^1 T2 z附:
8.5.4 An encapsulant, ground, or interwinding insulation whose principal constituents (base resin, filler,
: E5 h1 X$ k. C% i% ?; Y9 }reinforcement, flame retardant, heat stabilizer, and anti-oxidant) are found, based on documentation, to
3 `( ^# K  t" b7 b7 l: Vbe identical in composition and proportion to those of an encapsulant, ground, or interwinding insulation
presently specified in an insulation system shall be accepted in the system without additional tests when
7 X, `" _, g# hboth the following conditions are met:
a) The assigned relative thermal indices (electrical and mechanical) and minimum thickness of
the 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
) u7 }3 G: }; `9 Kmolecular weight, lubricant, nucleating agent, anti-static agent, colorant, or particle size.