The Detail Information Of Transformer Electric Insulation Diamond Dotted Paper  Item Property Unit Requirement 1 Appearance - The single and double sides have uniform rhombus coating, flat , smooth and no impurities 2 Thickness and Tolerance mm 0.08 ± 0.005 0.13 ±0.007 0.17±0.01 3 Breakdown voltage v ≥800 ≥1100 ≥1400 4 tensile strength MD A Mpa ≥74 ≥80 ≥76     CD A   ≥36 ≥38 ≥38 5 Bond strength Kpa ≥380 double side 6 Width mm 625 ± 5    960± 5  1020 ± 5