12.7/22kV URD Triplex

Description

Description

Standards

  • International
    IEC 60228; IEC 60502-2
  • National
    AS/NZS 1125; AS/NZS 1429.1

Aluminium conductors, triple extruded conductor screen, insulation and insulation screen, copper wire screened, water blocking taped, HDPE sheathed, laid up 'Triplex' cables.

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Armour type
-
Conductor material
Aluminum
Insulation
XLPE
Outer sheath
HDPE
Screen
Copper wire
Type of conductor
Stranded compacted

Dimensional characteristics

Dimensional characteristics

Approximate weight
305.0 kg/100m
Conductor cross-section
95 mm²
Conductor diameter
11.36 mm
Diameter over insulation
23.633 mm
Diameter over screen
26.933 mm
Nominal Duct Diameter
100 mm
Nominal Screen Area on each core
20.43 mm²
Nominal insulation thickness
5.5 mm
Nominal overall diameter of each phase cable
31.7 mm
Nominal overall diameter of triplex
68.2 mm
Number of screen wires (nb x mm Ø)
36 x 0.85 mm Ø

Electrical characteristics

Electrical characteristics

A.C. Conductor resist. 50Hz and at 90 °C
0.41 Ohm/km
Capacitance (All Main Cores - Screen)
0.214 µF / km
Charging current per phase
0.855 A/km
DC Resistance of the Screen at 20°C
0.88 Ohm/km
Dielectric loss per phase
43.4 W/km
Inductive reactance at 50Hz
0.125 Ohm/km
Insulation resistance at 20°C
11000 MOhm.km
Max. DC resistance of the conductor at 20°C
0.32 Ohm/km
Maximum electric stress
3.2 kV/mm
Permissible short circuit current conductor 1s
9 kA
Permissible short circuit current screen 1s
3.03 kA
Rated Voltage Uo/U (Um)
-
Zero sequence reactance at 50HZ
0.07 Ohm/km
Zero sequence resistance at 20°C
1.203 Ohm/km

Mechanical characteristics

Mechanical characteristics

Maximum Pulling Tension
14.25 kN

Usage characteristics

Usage characteristics

Minimum Bending Radius of Cable Bundle During Pulling
1020 mm
Minimum Bending Radius of Cable Bundle Set in Position
680 mm
Minimum Bending Radius of Phase Cable During Pulling
790 mm
Minimum Bending Radius of Phase Cable Set in Position
470 mm

Resources

Resources

Current carrying capacity table (in Amps) - 12.7/22kV URD Triplex

Current carrying capacity table (in Amps) - 12.7/22kV URD Triplex
Conductor cross-section
mm² Al Al Al Al Al
95.0 242.0 257.0 181.0 234.0 196.0
In air touching
In air spaced from surface
In air enclosed
Underground direct touching
Underground ducts

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