Technical parameters of electrical insulating cardboard

Executive standard: GB/T19264.3-2003
Indicator value 1
Nominal thickness mm0.8-5.02
Thickness deviation (limit) ≤ 1.6mm>1.6mm% ± 7.5 ± 5.03
Tightness ≤ 1.6mm>1.6-3.0mm>3.0-6.0mmg/cm3 1.00 1.201.10 1.251.15 1.304
Tensile strength (minimum) longitudinal ≤ 1.6mm>1.6-3.0mm>3.0-6.0mmMpa 1001051105
Tensile strength (minimum) transverse ≤ 1.6mm>1.6-3.0mm>3.0-6.0mmMpa 7580856
Elongation (minimum) longitudinal% 3.07
Elongation (minimum) Lateral% 4.08 Shrinkage (limit) Longitudinal transverse thickness% 0.50.75.09 Moisture (limit)% 610 Ash (limit)% 11
Electrical strength (minimum) ≤ 1.6mm>1.6-3.0mm>3.0-6.0mmKV/mm 40353012 water extract conductivity (limit) ms/m813 water extract pH value/6-9 as insulation material in equipment such as transformers and transformers.