Certification of Electrical Insulation Systems according to UL Standard 1446 Ed.8

UL 1446 is an administrative test standard that is primarily concerned with the chemical compatibility of the materials used at a given continuous operating temperature.
Edition 7 of the UL 1446 standard, published in November 2016, brought some innovations and more clarity to the certification process for electrical insulation systems (EIS) at UL. The focus is on the thermal load of the EIS, which is the decisive factor for ageing. For the first time, IEC (International Electrotechnical Commission) standards were given preference for the test procedures. The previously common North American ASTM (American Society for Testing and Materials) standards are listed as technically equivalent. 

Edition 8 has been valid since November 2019, which refers to the latest ANSI and SCC approval data and requirements for thermal ageing testing with a defined service life. The corresponding test method is described in this brochure.
 

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This publication is also available in German