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Description
Description
Standards
-
ProductCEI 20-68; HD 620; IEC 60502-2
Description
Single core cables with aluminium conductor, reduced thickness XLPE insulation, aluminium tape screen, shock resistant PE outer sheath.
Application:
Suitable for fixed installation indoor or outdoor, laying in air or directly or indirectly buried. The special outer sheath provides an excellent protection against impacts and mechanical stress. Cables shock resistance has been evaluated by the abrasion and impact tests included in CEI 20-68 standard. This type of cable can be directly buried, without additional protections, because it is comparable to an armoured cable.
Construction
- Conductor: stranded, compacted, round aluminium – Cl. 2 (IEC 60228).
- Conductor screen: extruded semiconducting compound.
- Insulation: extruded polyethylene (XLPE) compound.
- Insulation screen: extruded semiconducting compound – fully bonded.
- Longitudinal watertightness: semiconducting water blocking tape.
- Screen and radial watertightness: aluminium tape longitudinally applied (nominal thickness: 0,2 mm).
- Outer sheath: extruded polyethylene (PE) compound. Colour: red.
Functional characteristics
- Rated voltages U0/U: 12/20 kV
- Max. operating temperature of conductor: 90°C
- Max. short circuit temperature of conductor: 250°C (max 5s)
- Max. short circuit temperature of screen: 150°C
- Min. installation temperature: -25°C
- Max. tensile strength on the conductor during installation: 50 N/mm2
- Min. bending radius during installation: 14 Dcable
Characteristics
Characteristics
Construction characteristics
Construction characteristics
Conductor material
-
Conductor shape
-
Conductor flexibility
-
Material of the inner semi-conductor
-
Insulation
-
Material of the external semi-conductor
-
Material used for longitudinal water tightness
-
Screen
-
Outer sheath
-
Sheath colour
-
Dimensional characteristics
Dimensional characteristics
Number of cores
-
Conductor cross-section
- mm²
Conductor diameter
- mm
Minimum insulation thickness
- mm
Diameter over insulation
- mm
Screen thickness
- µm
Nominal outer sheath thickness
- mm
Nominal outer diameter
- mm
Approximate weight
- kg/km
Electrical characteristics
Electrical characteristics
Rated Voltage Uo/U (Um)
-
Max. DC resistance of the conductor at 20°C
- Ohm/km
A.C. Conductor resist. 50Hz and at 90 °C
- Ohm/km
Perm. current rating buried 20°C - trefoil formation
- A
Perm. current rating in air 30°C - trefoil formation
- A
Permissible short circuit current conductor 1s
- kA
Permissible short circuit current screen 0.5s
- kA
Thermal soil resistivity dry zone
- °K.m/W
Grounding type
-
Mechanical characteristics
Mechanical characteristics
Mechanical resistance to impacts
-
Usage characteristics
Usage characteristics
Laying depth, center of system
- mm
Resources
Resources
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