Power distribution cable: high-voltage
max. 132 kV
CABELTE
Cabelte began the manufacturing of high voltage cables in 2006, following a Project involving the purchase of an insulation manufacturing line, "dry curing" reticulation process, and the completion of a set of prototypes and tests aiming products approval and homologation.
Similarly, internal technical competences were strengthened, covering the areas usually involved in High Voltage Projects, from cable dimensioning and design up to its installation.
The 1st phase of this Project covered the cables up to 60kV, manufactured in accordance with the main national and international standards and also with customers own standards connected to installations for high voltage projects.
The 2nd phase of the Project is now being prepared and will include the production of cables up to 132kV.
General Outline
For standard high voltage cables it is possible to identify 4 parts with different function characteristics:
Conductors ensuring electric power transmission;
Insulation coverings and internal / external semiconductors, simultaneously extruded, ensuring the appropriate level of electrical safety for the specified rated voltage;
Metallic screens discharging defect current, to restrain the electric field and, in certain types of cables, for mechanical protection and water blocking proof;
The sheaths suitable to external cable protection considering, namely, the installation conditions.
