IEC 60667-3-1 specifies requirements for flat vulcanized fibre sheets. Not applicable to material made by combining with an adhesive several thicknesses of vulcanized fibre sheet.
IEC 60667-3-1 Ed. 2.0 b:2020
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Vulcanized fibre for electrical purposes – Part 3: Specifications for individual materials – Sheet 1: Flat sheets
Category: IEC