TXRA 24kV 3x240Cu GS48 Zn

Description

Description

Standards

  • Product
    IEC 60228; IEC 60502-2; Nexans specification

Armored PEX insulated submarine cables for utilities.

 

Construction:
 

Conductor:
Round multiple wire, compressed copper conductor

Conductor screen:
Extruded layer of semi-conductive cross-linked polyethylene.

Insulation:
Extruded insulation of cross-linked polyethylene.

Insulation screen:

Extruded insulation of cross-linked polyethylene.

Twisting and bonding:
Three insulated conductors are twisted together and bonded with semiconducting bands.
Fillers are installed in the winding rooms.
If desired, fiber cables can also be inserted into the winding rooms.

Armouring:
A layer of galvanized steel wires.
Zinc wires can be inserted into the reinforcement if desired.

Outer corrosion protection:
Two layers of polypropylene yarn with bitumen.

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Annealed copper
Conductor shape
Circular compacted
Material of the inner semi-conductor
Extruded
Insulation
XLPE (Cross-linked Polyethylene)
Material of the external semi-conductor
Extruded
Armour type
Galvanised round steel wires
Conductor flexibility
Stranded class 2

Dimensional characteristics

Dimensional characteristics

Conductor diameter
18.4 mm
Diameter over insulation
30.9 mm
Nominal insulation thickness
5.5 mm
Diameter of steel wires
4.2 mm
Nominal outer diameter
88.1 mm
Approximate weight
16000 kg/km
Approximate weight in seawater
10500 kg/km
Conductor cross-section
240 mm²
Number of cores
3
Number of optical fibres
48

Electrical characteristics

Electrical characteristics

Max. DC resistance of the conductor at 20°C
0.0754 Ohm/km
Maximum operating voltage
24 kV
Permissible current rating when buried
515 A
Permissible current rating in open air
570 A
Permissible current rating submerged in water, 15°C ambient temperature
555 A
Nominal phase capacitance
0.326 µF / km
Nominal inductance
0.332 mH/km
Permissible short circuit current conductor 1s
35.3 kA
Permissible short circuit current screen 1s
4.0 kA
Rated Voltage Uo/U (Um)
12 / 20 (24) kV
Reactance at 50 Hz
0.104 Ohm/km
Zero sequence reactance at 50HZ
- Ohm/km
Zero sequence resistance at 20°C
- Ohm/km

Mechanical characteristics

Mechanical characteristics

Maximum pulling force by laying
68.1 kN

Usage characteristics

Usage characteristics

Max. conductor temperature in service
90 °C
Short-circuit max. conductor temperature
250 °C
Bending factor when laying
15 (xD)
Minimum installation temperature
-10 °C

Resources

Resources

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