ARE4H5EEX 18/30kV 3x1x70 SK2

Description

Description

Standards

  • Product
    CEI 20-68; HD 620; IEC 60502-2

Helically bundled tripolar cables with aluminium conductor, reduced thickness XLPE insulation, aluminium tape screen, double shock resistant PE sheath.

Application:

Suitable for fixed installation indoor or outdoor, laying in air or directly or indirectly buried. The two special sheaths provide 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).
  • First sheath: extruded polyethylene (PE) compound.
  • Second sheath: extruded polyethylene (PE) compound. Colour: red.

Functional characteristics:

  • Rated voltages U0/U: 18/30 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: 21 Dphase

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Aluminum
Conductor shape
Round, stranded and compacted
Conductor flexibility
Class 2 acc. to IEC 60228
Material of the inner semi-conductor
Extruded semiconducting compound
Insulation
Extruded XLPE compound
Material of the external semi-conductor
Extruded semiconducting compound - fully bonded
Material used for longitudinal water tightness
Semiconducting swellable tape
Screen
Aluminium tape
Inner sheath
Extruded PE compound - impacts resistant
Outer sheath
Extruded PE compound - impacts resistant
Sheath colour
Red
Lay Up
Twisted single cores

Dimensional characteristics

Dimensional characteristics

Number of phases
3
Phase Conductor Cross Section
70 mm²
Phase Conductor Diameter
9.8 mm
Minimum insulation thickness
7.1 mm
Diameter over insulation
25.8 mm
Screen thickness
200 µm
Inner sheath thickness
2.0 mm
Nominal outer sheath thickness
2.0 mm
Nominal overall diameter of each phase cable
38.6 mm
Nominal overall diameter
83.3 mm
Approximate weight
3440 kg/km

Electrical characteristics

Electrical characteristics

Rated Voltage Uo/U (Um)
18 / 30 (36) kV
Max. DC resistance of the conductor at 20°C
0.443 Ohm/km
A.C. Conductor resist. 50Hz and at 90 °C
0.568 Ohm/km
Perm. current rating buried 20°C - trefoil formation
186 A
Perm. current rating in air 30°C - trefoil formation
238 A
Permissible short circuit current conductor 1s
6.6 kA
Permissible short circuit current screen 0.5s
1.9 kA
Thermal soil resistivity dry zone
1.5 °K.m/W
Grounding type
Solid bonding

Mechanical characteristics

Mechanical characteristics

Mechanical resistance to impacts
Shocks resistant, acc. to CEI 20-68

Usage characteristics

Usage characteristics

Laying depth, center of system
800 mm

Resources

Resources

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