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
Thickness
μm
50±3.0
75±5.0
125±7.0
175±10.0
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
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
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
Water content
%
6.0~9.0