绝缘系统UL1446 OBJY2 UL认证: Class A, Class B, Class E, Class F, Class H

魔兽

UL 1446 Standard for Systems of Insulating Materials - General

These requirements cover test procedures to be used in the evaluation of Class 120(E) or higher electrical insulation systems (EIS) where the thermal factor is the dominating aging factor. These requirements also cover the investigation of the substitution of non-electrical insulating materials (NIM) components of insulation in a previously evaluated insulation system and also the test procedures to be used in the evaluation of magnet wire coatings, magnet wires, and varnishes.

绝缘系统(Electrical Insulation System，简称EIS)是多种绝缘材料相互搭配从而达到一定耐温等级的材料组合体，通常组成一个绝缘系统的材料有：漆包线，三层绝缘线，骨架，绝缘胶带，凡立水，挡片，绝缘导管，封装材料等。而绝缘系统被广泛地应用到的诸如电子元器件(如马达，变压器，镇流器等).

根据温度等级不同，UL将绝缘系统的认证等级分为:Class Y 90℃ class A 105℃， Class E 120℃， Class B 130℃， Class F 155℃ Class H 180℃， Class N 200℃， Class R 220℃， class S 240℃。

通常UL认证的起点是Class B 130℃，而在130℃以下不需要认证.

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