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| add time： | 2016-01-26 15:00:57 |
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XLPE insulated cable is using chemical method or physical method, the cable insulation polyethylene molecules by the transformation of linear molecular structure as the main molecular structure of mesh, hot plastic of polyethylene into thermosetting XLPE, so as to greatly improve the heat resistance and mechanical properties, reduce its shrinkage and the thermal no longer after melting, and keep the excellent electrical performance. ?
nature
XLPE insulated cables using peroxide crosslinking method, the polyethylene molecules by the linear molecular structure variable is the three-dimensional reticular structure, by thermal plastic material into thermosetting material and working temperature from 70 DEG C to 90 DEG C, significantly increase the cable load flow capacity. Cross linked polyethylene insulated cables have the following advantages:
1, heat resistant properties: the XLPE structure of the mesh has a very excellent heat resistance. Below 300 degrees Celsius will not be decomposed and carbonization, long-term working temperature of up to 90 degrees Celsius, thermal life of up to 40 years.
2, insulation performance: XLPE to maintain the original good insulation characteristics of PE, and further increase the insulation resistance. The dielectric loss tangent is very small, and the temperature has little effect.
3, mechanical properties: because the intermolecular built a new chemical bond, XLPE hardness, stiffness, wear resistance and impact resistance were improved, which make up the PE is vulnerable to the shortcomings of environmental stress cracking.
4, resistant to chemical characteristics: XLPE has a strong acid and alkali resistance, and its combustion products mainly for water and carbon dioxide, less harm to the environment, to meet the requirements of modern fire safety,
application
XLPE insulated cable is used in the distribution network, industrial installations or other large capacity electric field for fixed laying in AC 50Hz, rated voltage of 6kV ~ 35kV Power Transmission Distribution Line Road, the main function is to transport the electric power.
