1. DESCRIPTION
The high voltage cable paper is made from superior sulfate insulating wood pulpunbleacheduncoated and no any adhesive or filling material. The thickness and texture are uniform. Pinhole, undispersed fiber agglomerates and local defects are allowed by security requirements of transformer and cable manufacture.
2. FEATURES
High physical performance
High Electrical insulation
Chemical stability
3. APPLICATIONS
Magnet wire of 110-330kV transformer
High voltage Power cable
Insulating parts of high voltage equipment
4. TECHNICAL PARAMETER
|
ITEM |
UNIT |
STANDARD VALUE |
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|
Thickness
|
μm |
50±3.0 |
75±5.0 |
125±7.0 |
175±10.0 |
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|
Apparent density |
g/cm3 |
0.85±0.05 |
|||||||
|
Tensile strength |
MD |
kN/m |
≥3.9 |
≥6.4 |
≥10.0 |
≥12.8 |
|||
|
TD |
≥1.9 |
≥2.8 |
≥4.8 |
≥6.4 |
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|
Elongation |
MD |
% |
≥1.8 |
≥2.0 |
|||||
|
TD |
≥4.0 |
≥5.0 |
|||||||
|
Conductivity of water extract |
mS/m |
≦4.0 |
|||||||
|
Dielectric strength |
kV/mm |
≥9.5 |
≥8.5 |
≥8.0 |
≥7.4 |
||||
|
Tear strength (TD) |
mN |
≥220 |
≥500 |
≥1200 |
≥1800 |
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|
Air permeability |
μm/(Pa.s) |
≦0.255 |
≦0.340 |
≦0.425 |
≦0.425 |
||||
|
Ash content |
% |
≦0.28 |
|||||||
|
factor( tan δ) 100 ℃ |
% |
≦0.22 |
|||||||
|
Na content of ash |
mg/kg |
≦34.0 |
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|
Water content |
% |
6.0～9.0 |
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