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Australian Standard (Medium Voltage)
12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Al Conductor)
Application
12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Al Conductor) cables are designed to
be used for the supply of electrical energy in fixed applications up to the rated voltages at a nominal power
frequency between 49Hz and 61Hz., 12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed
(Al Conductor) cables are suitable for use in distribution installation, electrical power station ,12.7/22kV Three
Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Al Conductor) cables are applied for installation,
outdoors, underground where subject to mechanical damage.
Standard
AS/NZS 1429.1
Cable Construction
CONDUCTOR: Plain circular compacted aluminium to AS/NZS1125 Maximum Continuous
Operating Temperature: 90°C
CONDUCTOR SCREEN: Extruded semi-conducting compound, bonded to the insulation and applied in the same
operation as the insulation
INSULATION: Cross Linked Polyethylene (XLPE) – standard Ethylene Propylene Rubber (EPR) – alternative
INSULATION SCREEN: Extruded semi-conducting compound
METALLIC SCREEN: Plain annealed copper wire: 10kA for nominal 1 second(HEAVY DUTY)
BEDDING: PVC
ARMOURING: Galvanised steel wires
SHEATH: Black 5V-90 polyvinyl chloride (PVC) – standard
Orange 5V-90 PVC inner plus black high density polyethylene (HDPE) outer – alternative Low smoke zero
halogen (LSOH) – alternative
Technical Characteristics
Nominal conductor area | Maximum Conductor DC resistance at 20°C | Cond. AC resistance at 50Hz and 90°C | Inductive reactance at 50Hz | Insulation resistance at 20°C | Conductor to screen capacitance | Charging current per phase | Dielectric loss per phrase | Maxi mum diael ectric stress |
Scree nDC resista nce at 20°C |
ArmourDC resistance at 20°C | Zero sequence resistance at 20°C | Zero seq. react. at 50Hz |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm2 | Ohm/km | Ohm/km | Ohm/km | MegOhm. km | µF x km | A x km | W x km | kV x mm |
Ohm /km |
Ohm/km | Ohm/km | Ohm/km |
35 | 0.868 | 1.11 | 0.14 | 15000 | 0.157 | 0.626 | 31.8 | 3.62 | 0.759 | 0.487 | 1.76 | 0.0919 |
50 | 0.641 | 0.821 | 0.134 | 14000 | 0.172 | 0.685 | 34.8 | 3.47 | 0.56 | 0.465 | 1.4 | 0.0855 |
70 | 0.443 | 0.568 | 0.124 | 13000 | 0.192 | 0.768 | 39 | 3.3 | 0.393 | 0.431 | 1.06 | 0.0757 |
95 | 0.32 | 0.41 | 0.117 | 11000 | 0.214 | 0.855 | 43.4 | 3.17 | 0.294 | 0.408 | 0.833 | 0.0697 |
120 | 0.253 | 0.325 | 0.113 | 10000 | 0.232 | 0.926 | 47 | 3.08 | 0.265 | 0.307 | 0.68 | 0.0657 |
150 | 0.206 | 0.265 | 0.11 | 9700 | 0.25 | 0.997 | 50.7 | 3.01 | 0.266 | 0.293 | 0.624 | 0.0622 |
185 | 0.164 | 0.211 | 0.106 | 9000 | 0.269 | 1.07 | 54.5 | 2.95 | 0.265 | 0.28 | 0.573 | 0.0591 |
240 | 0.125 | 0.161 | 0.102 | 8100 | 0.298 | 1.19 | 60.4 | 2.87 | 0.265 | 0.261 | 0.52 | 0.055 |
300 | 0.1 | 0.13 | 0.0996 | 7400 | 0.327 | 1.3 | 66.3 | 2.81 | 0.265 | 0.244 | 0.482 | 0.0527 |
400 | 0.0778 | 0.102 | 0.0951 | 6700 | 0.363 | 1.45 | 73.5 | 2.75 | 0.266 | 0.226 | 0.446 | 0.0484 |
500 | 0.0617 | 0.0819 | 0.0915 | 5900 | 0.407 | 1.62 | 82.4 | 2.69 | 0.265 | 0.209 | 0.414 | 0.045 |
Cable Parameter
Sectional Area of Conductor | Nom. Conductor Diameter | Nom. Insulation Thickness | Nom. Diamete Over insulation | Screen Area on cores | No. and Diamter of Screened Wires | Nom. Diamete Over Screened Wires | Nom. Diamete Over Bedding | Nom. Diamete of Armour | Nom. Diamete Over Armour | Nom. Overall Diameter | Approx. mass |
---|---|---|---|---|---|---|---|---|---|---|---|
mm2 | mm | mm | mm | mm2 | no x mm | mm | mm | mm | mm | mm | kg/100m |
35 | 6.9 | 5.5 | 19.2 | 23.8 | 14 x 0.85 | 22.5 | 52.3 | 2.5 | 57.3 | 63.3 | 535 |
50 | 8.1 | 5.5 | 20.3 | 32.3 | 19 x 0.85 | 23.6 | 54.9 | 2.5 | 59.9 | 66.1 | 585 |
70 | 9.6 | 5.5 | 21.9 | 46 | 27 x 0.85 | 25.2 | 58.6 | 2.5 | 63.6 | 70 | 665 |
95 | 11.4 | 5.5 | 23.6 | 61.3 | 36 x 0.85 | 26.9 | 62.3 | 2.5 | 67.3 | 74.1 | 750 |
120 | 12.8 | 5.5 | 25 | 68.1 | 40 x 0.85 | 28.3 | 65.5 | 3.15 | 71.8 | 78.8 | 900 |
150 | 14.2 | 5.5 | 26.4 | 68.1 | 40 x 0.85 | 29.7 | 68.7 | 3.15 | 75 | 82.3 | 975 |
185 | 15.7 | 5.5 | 27.9 | 68.1 | 40 x 0.85 | 31.2 | 72 | 3.15 | 78.3 | 85.9 | 1040 |
240 | 18 | 5.5 | 30.3 | 68.1 | 40 x 0.85 | 33.6 | 77.1 | 3.15 | 83.4 | 91.3 | 1160 |
300 | 20.1 | 5.5 | 32.6 | 68.1 | 40 x 0.85 | 36.1 | 82.8 | 3.15 | 89.1 | 97.3 | 1300 |
400 | 23 | 5.5 | 35.4 | 68.1 | 40 x 0.85 | 38.9 | 89.3 | 3.15 | 95.6 | 104.2 | 1480 |
500 | 26.5 | 5.5 | 39 | 68.1 | 40 x 0.85 | 42.5 | 97.1 | 3.15 | 103.4 | 112.5 | 1700 |