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Even nowadays, conductors for MV cables to Swiss standards are made of braided round copper wires. The inner and outer cross-linked semiconductor is welded permanently with the XLPE insulation. For EPR insulation, on the other hand, the outer semiconductor is glued.
The screening is formed by the outer semiconductor layer, together with a layer of round copper wires. A suitable screening cross-section is assigned to each conductor cross-section. The copper wire screening is held together by a copper band, also ensuring the electrical cross-connection between the copper wires. Lengthwise water-tightness is guaranteed by embedding the copper sheath in expansion strips.
Protection against corrosion is provided by a halogen-free black outer casing with two lengthwise red stripes.
Three single conductor cables can be braided together to make a triple-conductor or triple-casing cable. If cable laying conditions are difficult, it is also possible to lap the cables with tensile and protective armouring which consists of a layer of galvanised flat steel wires.
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Cables for power distribution for medium voltage outdoor, cased or underground installations.
Abrasion and tear-resistant jacket. Easier slide.
Reticulating process: The three extruded layers (semi-conductors and insulation) are extruded at the same time in a triple head. The tube is kept under controlled inert gas (N2) pressure to prevent the formation of vacuoles. The temperature profile of the tube is carefully controlled to ensure the correct level of reticulation in the cable core.
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Medium Voltage Power Cables up to 30 kV with XLPE-insulation
The XLPE-insulation possesses very good electrical, mechanical and thermal characteristics in medium voltage networks. This type of insulation is excellent chemical resistant and also resistant to cold. Due to various advantages, the XLPEinsulated type has vastly displaced the traditional classical paper insulated types in many sectors.
The XLPE-insulated medium voltage cables are designed with longitudinally water-proof. In comparison to PVC and paper-insulated cables, the advantages of XLPE-insulated medium voltage power cables are possessing a low dielectric factor.
The good properties of XLPE-insulated cables remain constant at a long temperature range. These cables can be laid in earth, in air or in tubes.
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Cabelte produces, since 1983, medium voltage cables up to 36 kV. The cables with copper or aluminium conductors can be insulated with cross-linked polyethylene or polyolefin, according to the configurations adequate to the standards requirements and constructive applications demanded for each situation.
Cabelte uses in the insulation production the triple extrusion technique, with inner and outer insulating and semiconducting layers, simultaneously extruded, avoiding this way contamination risks and presence of impurities.
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Cabelte produces, since 1983, medium voltage cables up to 36 kV. The cables with copper or aluminium conductors can be insulated with cross-linked polyethylene or polyolefin, according to the configurations adequate to the standards requirements and constructive applications demanded for each situation.
Cabelte uses in the insulation production the triple extrusion technique, with inner and outer insulating and semiconducting layers, simultaneously extruded, avoiding this way contamination risks and presence of impurities.
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Cabelte began the manufacturing of medium voltage power cables in 1983 for a Project which required the strengthening of internal technical staff and a significant investment with new buildings and equipment for production and testing.
By that time, the range of products included, namely, cables to be used on low voltage power transmission public networks and in some industrial networks.
Throughout the years, new types of cables were developed – with more demanding technical requirements, having different design characteristics and cables for different markets. One should remark, those to be applied on airports, underground railways and wind farms.
The company has been following this evolution and, nowadays, it has a wide range of references covering the different rated voltages, several national and the most important international standards and also particular specifications adopted by some customers. Additional technical requirements may also be considered to comply, for instance, with applications in harsh environment.
In 2005 Cabelte invested in new production machinery allowing to double its capacity for supplying medium voltage cables.
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- Hose reels for oil pressure, hydraulics, gas, and pneumatics;
- Electrical cable reels for power, auxiliary, and signal machines;
- Combined electrical-fluid reels, measurement, angle and length transducers;
- Reels with an electronic traction control;
- Automatic spring operated cable and hose reels for feeding moving machines;
- EExd anti-deflagration reels for use in potentially explosive environments;
- Manual reels of small, medium, and large dimensions;
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Metal Cable Reels
Hot-dipped galvanized steel plate drum, stable zink coated foot frame, drum brake. Ergonomic handle. Overheating protection by thermal switch. 4 socket outlets 2PE 16A/250V, shock and splash proof. Yellow cable colour for user´s safety. Appropriate for construction sites and industrial use. Packed in cardboard boxes, easily stackable. Labeled with EAN code and descriptive specifications.
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| ... products without technical information |
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