NEMA FI 3-2004适用于厚度不超过30密耳（0.76毫米）的压延芳纶纸作为电绝缘材料的鉴定和测试。芳纶和云母的混合物包含在FI 1中。出于美国政府采购目的，本标准取代军用标准MIL-I-24204A

NEMA FI 3-2004 applies to qualification and testing of calendered aramid papers in thicknesses up to 30 mils (0.76 mm) for use as electrical insulation. Blends of aramid and mica are covered in FI 1. For U.S. Government procurement purposes, this standard replaces Military Standard MIL-I-24204A