Complaint
Standard:GB/T19264.3-2003 & IEC60641-3-1992 | |||||||||
Properties | Electrical Paperboard | T4 Paperboard | |||||||
1mm | 2mm | 3mm | 4mm | 5mm | ≤1.6mm | >1.6~3mm | >3~6mm | >1.6~8mm | |
Values | |||||||||
Thickness & Tolerance(%) | ±7.5 | ±5.0 | ±5.0 | ±5.0 | ±5.0 | ±7.5 | ±5.0 | ±5.0 | ±5.0 |
Apparent Density(g/m2) | 1.0~1.2 | 1.0~1.2 | 1.10~1.25 | 1.15~1.3 | 1.20~1.3 | ||||
Moisture Content(%) | ≤8 | ≤6.0 | |||||||
Water Extraction PH | 6.5-8.5 | ||||||||
Ash Content(%) | ≤1.0 | ||||||||
Oil Absorbency(%) | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥11 | ≥9 | ≥7 | ≥7 |
Contamination to Transformer Oil | No Contamination | ||||||||
Tensile Strength MD(N/10mm) | ≥110 | ≥110 | ≥110 | ≥110 | ≥110 | ≥100 | ≥105 | ≥110 | ≥110 |
Tensile Strength CD(N/10mm) | ≥80 | ≥85 | ≥80 | ≥80 | ≥80 | ≥75 | ≥80 | ≥85 | ≥85 |
Elongation MD(%) | ≥7.0 | ≥7.0 | ≥7.0 | ≥7.0 | ≥7.0 | ≥3.0 | ≥3.0 | ≥3.0 | ≥3.0 |
Elongation CD(%) | ≥9.0 | ≥9.0 | ≥9.0 | ≥9.0 | ≥9.0 | ≥4.0 | ≥4.0 | ≥4.0 | ≥4.0 |
Shrinkage MD(%) | ≤0.7 | ≤0.7 | ≤0.7 | ≤0.7 | ≤0.7 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 |
Shrinkage CD(%) | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤0.7 | ≤0.7 | ≤0.7 | ≤0.7 |
Shrinkage Thickness(%) | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 | ≤5.0 |
Compressibility,C(%) | - | - | - | - | - | ≤10.0 | ≤7.5 | ≤5.0 | ≤4.0 |
Crve pevereible part of coompressibility(%) | - | - | - | - | - | ≥45 | ≥50 | ≥50 | ≥50 |
Conductivity of aqueous extract(mS/m) | - | - | - | - | - | ≤5.0 | ≤6.0 | ≤8.0 | ≤10 |
Electric Strength In the Air(KV/mm) | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥12 | ≥11 | ≥10 | ≥9 |
Electric Strength In the Oil(KV/mm) | ≥40 | ≥30 | ≥25 | ≥25 | ≥25 | ≥40 | ≥35 | ≥30 | - |
