Historical
IEC 60819-3-3 Ed. 2.0 b:2006
Non-cellulosic papers for electrical purposes - Part 3: Specifications for individual materials - Sheet 3: Unfilled aramid (aromatic polyamide) papers
This sheet of IEC 60819-3 specifies requirements for four types of unfilled aramid papers: Type 1: Calendered paper, Type 2: Calendered paper with improved tearing resistance and conformability, Type 3: Uncalendered paper, Type 4: Calendered paper with lower density for laminating.
International Electrotechnical Commission [iec]