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 o; c: [- H& F% E  Q2 Q3 ARTI 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?
) N1 L; }' @2 {& Y; r( z; L: }- A. {附:
8.5.4 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
$ R1 Q& o  }3 Tbe identical in composition and proportion to those of an encapsulant, ground, or interwinding insulation
# w1 T9 k: f2 d7 o% b0 c7 y1 d& `presently specified in an insulation system shall be accepted in the system without additional tests when
8 E2 {- ^: h; \' Z1 G1 [6 fboth the following conditions are met:
! U' z3 D( P  Ia) 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
molecular weight, lubricant, nucleating agent, anti-static agent, colorant, or particle size.