China Pressboard Strip and Spacer for Making The Oils Transformer, Find details about China Pressboard Strip and Spacer, Pressboard Strip from Pressboard Strip and Spacer for Making The Oils Transformer
Index. | Unit | Values | ||||
≤1.6 | >1.6~3.0 | >3.0 | ||||
1 | Nominal thickness tolerance | % | ≤10(±) | |||
2 | Nominal Grammage | g/cm3 | 1.00~1.20 | 1.00~1.25 | 1.15~1.30 | |
3 | Shear strength ,M.D. | Mpa | ≥100 | ≥105 | ≥110 | |
4 | Shear strength, C.M.D. | Mpa | ≥75 | ≥80 | ≥85 | |
5 | Elongation (M.D.) | % | ≥3.0 | |||
6 | Elongation (C.M.D.) | % | ≥4.0 | |||
7 | Shrinkage | % | ≤10.0 | ≤7.5 | ≤5.0 | |
8 | Shrinkage which would resume | % | ≥45 | ≥50 | ≥50 | |
11 | Shrinkage: | M.D. | % | ≤0.5 | ||
C.M.D. | ≤0.7 | |||||
Thickness direction | ≤4.0 | |||||
12 | Moisture content | % | ≤6.0 | |||
13 | Ash content | % | ≤1.0 | |||
14 | Electrical conductivity of aqueous extract | ms/m | ≤1.6 | >1.6~3.0 | >3.0 | |
15 | Aquesous extract (PH) | - | 6~9 | |||
16 | Oil absorption | % | ≥11.0 | ≥9.0 | ≥7.0 | |
17 | Voltage resistant strength(In air) | MV/m | ≥12 | ≥11 | ≥10 | |
18 | Voltage resistant strength(In oil) | MV/m | ≥40 | ≥35 | ≥30 |