Specifications
SpecificationsThickness: 0.05mm - 4mm
Colour: brown,red,blue
width:1000-1050MM
Uses and character of the product:
Electrical insulation kraft paper for transformer
kraft paper
kraft paper for transfomer
Made with 100% unbleached sulphate wood pulp,with characteristics of high tensile strength,high elongation,low compressibility.
Transformer Press Paperboard
Product accord IEC60641-3-1:1992 quality standard
Technical Data
| Properties | Unit | Min/max or range | Index | |||||
| ≤1.6mm | >1.6mm-3.0mm | >3.0mm-6.0mm | ||||||
| Thickness Deviation | % | Max | ±7.5 | ±5.0 | ||||
| Apparent density | g/cm3 | Range | 1.00-1.20 | 1.10-1.25 | 1.15-1.30 | |||
| Tensile Strength | MD | Mpa | Min | 100 | 105 | 110 | ||
| CMD | 75 | 80 | 85 | |||||
| Shrinkage | MD | % | Max | 0.5 | ||||
| CMD | 0.7 | |||||||
| Thickness | 5.0 | |||||||
| Moisture content | % | Max | 6.0 | |||||
| Ash content | % | Max | 1.0 | |||||
| Conductivity of Aqueous extract | mS/m | Max | 5.0 | 6.0 | 8.0 | |||
| Electrical strength in oil | kV/mm | Min | 40 | 35 | 3.0 | |||
| StandardSize | 1100x2200 1000×2000mm 1000×1000mm | |||||||
High Density Transformer Press Paperboard
| Type | B3.1 | |||||||
| Apparent Density | 1.0-1.30g/cm3 | |||||||
| Thickness | 0.8-8.0mm | |||||||
| Moisture content | 6% | |||||||
| Special | Free of strains,very flat,hightest mechanical and electrical strength,little shrinkage | |||||||
| standard size | 2200x4400mm | |||||||