Brief Introduction
Description
1.Electrical grade insulating cable paper is manufactured from 100% high-quality sulfate insulating wood pulp. Our ordinary insulating papers are available in nominal thicknesses from 50 to 250 microns,
and in continuous rolls up to the widths of 625, 960mm and 1200mm (the roll diameter being 680 to 730mm),
or other customized diameters and widths on request.
2.Insulation Press Paper Board is appropriated for uses as electric industrial board for motors, electric device, instruments, switch board, transformer for insulation and assembly pieces. 100%(wood/cotton) thick board is characterized by its high density, good mechanical strength, low compression coefficient and high electric strength.
3.This paper is highly refined and cleaned to ensure uniform thickness and free from formation Pinholes, un-dispersed fiber bundles and tiny defects
It is a low-voltage grade insulating paper well suited for making electromagnetic wires, power cables of transformers below 35kV and other electrical insulating equipments below 35kV. This paper has stable electrical and chemical properties, and high physical strength to meet the exacting
needs of our valued customers.
Specified Properties |
Units |
Values Specified |
|
|
|
2mil |
2.5mil |
3mil |
4mil |
5 mil |
Thickness Tolerance |
Micron |
|
50+/-10% |
64+/-10% |
75+/-10% |
100+/-10% |
125+/-10% |
Substance (Grammage) |
g / m^2 |
|
40+/-10% |
51+/-5% |
61+/-5% |
76+/-5% |
100+/-5% |
Apparent Density |
g / m^3 |
0.8 +/- 0.05 |
Moisture Content |
% |
8 Max |
Moisture content |
% |
5 - 9 |
Water Absorption MD
CD |
Mm |
10 Min. |
Air Permeability |
m/Pa.Sec |
0.5 to 1.0 |
Tensile Index MD
CD |
Nm/g |
78 Min
28 Min |
Elongation MD
CD |
% |
2.0 Min
4.0 Min |
Tear Index MD
CD |
mN m^2/g |
5 Min
6 Min |
Electric Strength in Air |
KV/mm |
7.0 Min |
Ash Content |
% |
1.0 Max |
Conductivity of 5% Aqueous Extract |
Ms/m |
10 Max |
Ph of 5% Aqueous Extract |
|
6 - 8 |
Heat Stability (150degC,24hrs) |
% |
20 Max |
Features
| Properties | Unit | Testing value |
| Thickness | mm | 0.8~1.0mm | 1.5~2.0mm | 2.5mm | 3.0mm |
| Thickness Tolerance | % | ±7 | ±5 |
| Density | g/cm3 | 1.00~1.25 | 1.10~1.25 |
| Tensile Strength, Min. | Cross | N/mm2 | 50 |
| Longitudinal | 90 |
| contraction, Max. | Cross | % | 1.4 |
| Longitudinal | 1.0 |
| Vertical | 6.0 |
| Elongation, Min. | Cross | % | 4.0 |
| Longitudinal | 35 |
| Dielectric Strength, Min. | KV/mm | 35 | 30 | 27 | 24 |
| Humidity | % | 4~9 | 5~9 |
| PH of Aqueous Extract |
| 6.0~8.0 |
| Oil-absorbency, Min. | % | 9 |
Used widely as electrical insulation wrap on aluminium and copper wires by conductor manufacturers,
electrical insulation between layers of wound coils in electrical motors, in capacitors, transformers & such
other electrical equipment.
