FR-N20XA8E-R 3x1x240 Eca N/G BGN8 EDRMAX

Description

Description

Standards

  • International
    HD 620
  • National
    NF C 33-226

Usage

EDRMAX® NF C 33-226 Direct Buried cables are the new generation of cables for public power distribution network 12/20 kV. Re-enforced burying resistance (EDR) is ensured with an extruded polyethylene protection. They are flame retardant according to NF EN 60332-1-2. They are AD8 (water pressure < 0,2 bar), AF2 and AN3 complying with NF C 13-200 standard. Both sheaths are anti-termite resistant.

 

Design

The cable is made of 1 or 3 bunched cores.

 

Commercial designation

EDRMAX® by Nexans

 

Laying condition

Burial depth : 0.80 m

Soil thermal resistivity : 1.2 K m/W

 

Electrical caracteristics

 

Calculated from IEC 60949, permissible short circuit current is applicable for the conductor during 1s.

 

Options

NF C 33-226 cables can be manufactured with the following options:

  • Copper conductor
  • Bunch

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Bare copper
Conductor flexibility
Stranded class 2
Conductor shape
Circular stranded (RM)
Material of the inner semi-conductor
conductive rubber
Insulation
XLPE (chemical)
Material of the external semi-conductor
Extruded strippable smooth elastomer
Material used for longitudinal water tightness
Swellable tape
Screen
ALU/PET tape screening foil
Outer sheath
PE
Sheath colour
Black + 2 Grey Lines
Protection
PE oversheath

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
240 mm²
Number of cores
3
Conductor diameter
18.2 mm
Diameter over insulation
28.0 mm
Maximum diameter over insulation
- mm
Screen thickness
150 µm
Average sheath thickness
5.0 mm
Nominal outer diameter
85.1 mm
Aluminium (or alloy) area
- mm²
Approximate diameter of the bunched cable
- mm
Approximate weight
9210 kg/km
Nominal insulation thickness
4.5 mm

Electrical characteristics

Electrical characteristics

A.C. Conductor resist. at 90 °C - trefoil formation
0.098 Ohm/km
Capacity of phase cores approx.
- µF / km
Inductive resistance at 50Hz
- Ohm/km
Max. DC resistance of the conductor at 20°C
0.075 Ohm/km
Nominal inductance
- mH/km
Perm. current rating buried 20°C - trefoil formation
588 A
Perm. current rating in air 30°C - trefoil formation
646 A
Permissible short circuit current
- A
Permissible short circuit current screen 1s
2.43 kA
Rated Voltage Uo/U (Um)
12 / 20 (24) kV
Voltage drop, single phase
0.13 V/A.km

Mechanical characteristics

Mechanical characteristics

Mechanical resistance to impacts
AG4
Maximum admissible traction load (Tm)
- daN

Usage characteristics

Usage characteristics

Ambient installation temperature, range
-10 ... 50 °C
Weather resistance
AN3 / AF2
Resistant to termites
Yes
Flame retardant
C2, NF C 32-070
Minimum static operating bending radius
553 mm
Water proof
AD8

Resources

Resources

Documentation

Selling & delivery Information

Marking

Example NEXANS - plant number- BGN7 NF C 33-226 int. designation- section - AL - 12/20 (24) kV - EDR - year - month -  installation guide type - G sheath thickness - SC semi-conductor thickness - EC screen thickness - C2 RT installation temperature Commercial marking is ink marqued

Core identification: 1, 2, 3 engraved on each phase.

The marking is metric over one core sheath, as well as a tracing mark.

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