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12.7/22kV Three Core URD 10kA Fault Level
12.7/22kV Three Core URD 10kA Fault Level
12.7/22kV Three Core, Individually Screened PVC/HDPE Sheathed URD Aluminium Conductors up to 10kA fault level
Read more- Nexans ref. : XLNA25AA003
Description
Description
Standards
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ProductAS/NZS 1125; AS/NZS 1429.1; IEC 60228; IEC 60502-2
Stranded compacted aluminium conductor, triple extruded conductor screen, insulation and insulation screen, copper wire screened, PVC/HDPE sheathed.
XLMA - 3kA fault level
XLNA - up to 10kA fault level as standard
Characteristics
Characteristics
Construction characteristics
Construction characteristics
Conductor flexibility
Class 2
Conductor material
Aluminum
Conductor shape
Circular
Insulation
XLPE
Outer sheath
PVC/HDPE
Screen
Copper wire
Type of conductor
Stranded compacted
Dimensional characteristics
Dimensional characteristics
Approximate weight
485.0 kg/100m
Conductor cross-section
185 mm²
Conductor diameter
15.67 mm
Diameter over insulation
27.943 mm
Diameter over screen
31.243 mm
Nominal Duct Diameter
125 mm
Nominal Screen Area on each core
68.09 mm²
Nominal insulation thickness
5.5 mm
Nominal overall diameter
74.9 mm
Number of screen wires (nb x mm Ø)
40 x 0.85 mm Ø
Electrical characteristics
Electrical characteristics
A.C. Conductor resist. 50Hz and at 90 °C
0.211 Ohm/km
Capacitance (All Main Cores - Screen)
0.269 µF / km
Charging current per phase
1.073 A/km
DC Resistance of the Screen at 20°C
0.26 Ohm/km
Dielectric loss per phase
54.5 W/km
Inductive reactance at 50Hz
0.106 Ohm/km
Insulation resistance at 20°C
9000 MOhm.km
Max. DC resistance of the conductor at 20°C
0.164 Ohm/km
Maximum electric stress
3 kV/mm
Permissible short circuit current conductor 1s
17.5 kA
Rated Voltage Uo/U (Um)
-
Screen fault current carrying capacity for 1 second
10.098 kA
Zero sequence reactance at 50HZ
0.059 Ohm/km
Zero sequence resistance at 20°C
0.961 Ohm/km
Mechanical characteristics
Mechanical characteristics
Maximum Pulling Tension
27.75 kN
Usage characteristics
Usage characteristics
Minimum Bend Radius - During Installation (under Tension)
1870 mm
Minimum Bend Radius - Installed
1120 mm
Resources
Resources
Current carrying capacity table (in Amps) - 12.7/22kV Three Core URD
Current carrying capacity table (in Amps) - 12.7/22kV Three Core URDConductor cross-section |
|
|
|
|
|
---|---|---|---|---|---|
mm² | Al | Al | Al | Al | Al |
185.0 | 350.0 | 378.0 | 336.0 | 264.0 | 283.0 |
In air touching (3 core) |
In air spaced from surface (3 core) |
In air enclosed (3 core) |
Underground Direct Buried (3 core) |
Underground ducts (3 core) |
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