IEC 61061-1:2006 includes the definitions required for the understanding of all three parts of the standard, the designation of the material types and the general requirements applicable to non-impregnated densified laminated wood for electrical purposes includes the definitions required for the understanding of all three parts of the standard, the designation of the material types and the general requirements applicable to non-impregnated densified laminated wood for electrical purposes. This specification is intended to cover only sheets and rings of nominal thicknesses between 6 mm and 100 mm, inclusive. The main changes from the previous edition are as follows: - addition of application use and safety statements; - redefinition of ring and sheet; - appropriate additions to the subclauses; - reformatting of text to bring it in line with the IEC document format.