Verified Company
Ningbo Leadwin International Trade Co., Ltd.
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Insulation transformer paperboard
1 .Description: Insulation transformer paperboard is made of 100% sulfate wood pulp, mainly applicable to electric insulation.and its components such as motor, electric apparatus, meter, switch, transformer, etc. It hvae high chemical purity, excellent elongation, good Mechanical and dielectric Strength.
2.Specifications:
1).1000mm*2000mmm 2000mm*4000mm (the roll diameter being 1000mm)
2). nominal thicknesses:0.1-0.5mm 0.8-3.0mm
3).widths : 1000mm 2000mm
4).roll diameter :1000mm
3. Color:Natural,red
4) Applications: it is suited for oil-immersed transformers, capacitors, reactors and switches.
Techical Data sheet of thick insulation paperboard | |||||
Index name | Unit | Inedx requirement | |||
Thickness tolerance | % | ±7 | ±5 | ||
Tightness | g/m2 | 1.00-1.25 | 1.10-1.25 | ||
Tensile Strength(min) | N/mm2 | length:90 | breadth:50 | ||
Elongation rate(min) | % | length:3.5 | breadth:4.0 | ||
shrinking rate (max) | % | length:1.0 breadth:4.0 Thickness:6.0 | |||
absorption of oil(min) | % | 9 | |||
Electricity strength | KV/mm | 0.8-1.0mm | 1.5-2.0mm | 2.5 | 3 |
35 | 30 | 27 | 24 | ||
water content | % | 0.8-1.5mm | 2.0-3.0mm | ||
4~9 | 5~9 | ||||