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Australian Standard (Medium Voltage)

12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Cu Conductor)

Application

12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Cu 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 (Cu Conductor) cables are suitable for use in distribution installation, electrical power station , they are applied for installation, outdoors, underground where subject to mechanical damage.

Standard
AS/NZS 1429.1

Cable Construction

12.7/22kV Three Core Individual Screened & PVC PVC/SWA/PVC Sheathed (Cu Conductor)

CONDUCTOR: Plain circular compacted copper 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 capaci
tance
Charging current per phase Diele
ctric loss per phrase
Maxi
mum diaele
ctric stress
ScreenDC resistance 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 0.524 0.668 0.141 16000 0.156 0.622 31.6 3.63 0.531 0.487 1.29 0.0923
50 0.387 0.494 0.134 14000 0.171 0.682 34.7 3.48 0.367 0.465 1 0.0858
70 0.268 0.342 0.127 13000 0.192 0.765 38.9 3.31 0.265 0.438 0.763 0.0786
95 0.193 0.247 0.117 11000 0.216 0.862 43.8 3.16 0.265 0.408 0.675 0.0693
120 0.153 0.196 0.112 10000 0.236 0.942 47.8 3.07 0.265 0.302 0.577 0.0648
150 0.124 0.16 0.109 9500 0.254 1.01 51.5 3 0.266 0.288 0.54 0.0615
185 0.0991 0.128 0.105 8800 0.274 1.09 55.6 2.93 0.266 0.276 0.506 0.0582
240 0.0754 0.0981 0.101 7900 0.305 1.22 61.8 2.85 0.265 0.257 0.468 0.0542
300 0.0601 0.0792 0.0988 7200 0.334 1.33 67.8 2.79 0.265 0.241 0.44 0.0519
400 0.047 0.0633 0.0944 6500 0.371 1.48 75.1 2.73 0.265 0.224 0.413 0.0477
500 0.0373 0.0518 0.0915 5900 0.407 1.62 82.4 2.69 0.265 0.209 0.39 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 6.8 5.5 19.1 34 20 x 0.85 22.4 52.1 2.5 57.1 63.2 610
50 8 5.5 20.3 49.4 29 x 0.85 23.6 54.8 2.5 59.8 66 685
70 9.6 5.5 21.9 68.1 40 x 0.85 25.2 58.5 2.5 63.5 70.1 810
95 11.5 5.5 23.8 68.1 40 x 0.85 27.1 62.6 2.5 67.6 74.4 935
120 13.1 5.5 25.3 68.1 40 x 0.85 28.6 66.3 3.15 72.6 79.6 1140
150 14.5 5.5 26.8 68.1 40 x 0.85 30.1 69.6 3.15 75.9 83.1 1270
185 16.1 5.5 28.4 68.1 40 x 0.85 31.7 73 3.15 79.3 87 1400
240 18.5 5.5 30.8 68.1 40 x 0.85 34.1 78.5 3.15 84.8 92.6 1640
300 20.7 5.5 33.2 68.1 40 x 0.85 36.7 84.2 3.15 90.5 98.8 1900
400 23.6 5.5 36.1 68.1 40 x 0.85 39.6 90.7 3.15 97 105.6 2260
500 26.5 5.5 39 68.1 40 x 0.85 42.5 97.1 3.15 103.4 112.5 2640