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Australian Standard (Medium Voltage)

12.7/22kV Single Core Screened & PVC Sheathed (Cu Conductor)

Application

12.7/22kV Single Core Screened & 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 Single Core Screened & 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 Single Core Screened & 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: 3kA for nominal 1 second(LIGHT DUTY) Plain annealed copper wire: 10kA for nominal 1 second(HEAVY DUTY)

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

LIGHT DUTY

Nominal condu
ctor area
Maximum Condu
ctor
Cond. AC resistance at 50Hz
and 90°C
Inductive
reactance at 50Hz and 90°C
Insulation resistance at 20°C Conductor to screen capaci
tance
Maximum Current Rating
DC resistance at 20°C Trefoil or Flat touch
ing
flat spaced Trefoil touch
ing
flat touc
hing
flat spaced diaele
ctric stress
Unencl
osed In Air
Buried Direct Buried In Ducts (c)
mm Ohm/km Ohm/km Ohm/km Ohm/km Ohm
/km
Ohm/km MegOhm. km µF x km kV x mm A A A
35 0.524 0.668 0.668 0.159 0.174 0.219 16000 0.156 3.63 202 183 156
50 0.387 0.494 0.494 0.151 0.166 0.212 14000 0.171 3.48 242 216 183
70 0.268 0.342 0.342 0.143 0.158 0.204 13000 0.192 3.31 299 263 227
95 0.193 0.247 0.247 0.132 0.147 0.193 11000 0.216 3.16 365 314 271
120 0.153 0.196 0.195 0.127 0.143 0.188 10000 0.236 3.07 419 355 307
150 0.124 0.159 0.159 0.123 0.138 0.184 9500 0.254 3 476 398 343
185 0.0991 0.128 0.127 0.119 0.135 0.18 8800 0.274 2.93 546 448 386
240 0.0754 0.0978 0.0972 0.115 0.13 0.176 7900 0.305 2.85 644 517 455
300 0.0601 0.0788 0.078 0.112 0.127 0.172 7200 0.334 2.79 737 581 511
400 0.047 0.0628 0.0617 0.107 0.122 0.168 6500 0.371 2.73 855 658 579
500 0.0366 0.0503 0.0488 0.104 0.119 0.165 5900 0.407 2.69 986 740 651
630 0.0283 0.0407 0.0388 0.101 0.117 0.162 5300 0.453 2.64 1132 829 758

Cable Parameter

LIGHT DUTY

Sectional Area of Conductor Nom. Conductor Diameter Nom. Insulation Thickness Nom. Diamete Over insulation Screen Area on Each core No. and Diamter of Screened Wires Nom. Diamete Over Screened Wires Nom. Overall Diameter Approx. mass
mm2 mm mm mm mm2 no x mm mm mm kg/100m
35 6.8 5.5 19.1 20 36 x 0.85 20.1 26.3 98
50 8 5.5 20.3 20 36 x 0.85 21.4 27.6 112
70 9.6 5.5 21.9 20 36 x 0.85 22.8 29.0 135
95 11.5 5.5 23.8 20 36 x 0.85 24.5 30.7 164
120 13.1 5.5 25.3 20 36 x 0.85 25.9 32.1 191
150 14.5 5.5 26.8 20 36 x 0.85 27.3 33.5 220
185 16.1 5.5 28.4 20 36 x 0.85 29.1 35.5 260
240 18.5 5.5 30.8 20 36 x 0.85 31.4 37.8 319
300 20.7 5.5 33.2 20 36 x 0.85 33.6 40.2 383
400 23.6 5.5 36.1 20 36 x 0.85 37.0 43.8 473
500 26.5 5.5 39 20 36 x 0.85 40.3 47.3 575
630 29.9 5.5 42.7 20 36 x 0.85 43.9 51.2 720

Technical Characteristics

HEAVY DUTY

Nominal cond
uctor area
Maximum Condu
ctor DC resistance at 20°C
Cond. AC resistance at 50Hz and 90°C Inductive reactance at 50Hz and 90°C Insulation resistance at 20°C Conductor to screen capacitance Maximum diaelectric stress Current Rating
Trefoil or Flat touc
hing
flat spa
ced
Trefoil touc
hing
flat touc
hing
flat spaced Unencl
osed I
n Air
Buried Direct Buried In Ducts (c)
mm2 Ohm/km Ohm/km Ohm
/km
Ohm/km Ohm
/km
Ohm
/km
MegOhm. km µF x km kV x mm A A A
35 0.524 0.668 0.668 0.159 0.174 0.219 16000 0.156 3.63 202 183 156
50 0.387 0.494 0.494 0.151 0.166 0.212 14000 0.171 3.48 244 216 187
70 0.268 0.342 0.342 0.143 0.158 0.204 13000 0.192 3.31 301 262 226
95 0.193 0.247 0.247 0.132 0.147 0.193 11000 0.216 3.16 365 311 269
120 0.153 0.196 0.195 0.127 0.143 0.188 10000 0.236 3.07 419 351 303
150 0.124 0.159 0.159 0.123 0.138 0.184 9500 0.254 3 474 392 338
185 0.0991 0.128 0.127 0.119 0.135 0.18 8800 0.274 2.93 541 440 387
240 0.0754 0.0978 0.0972 0.115 0.13 0.176 7900 0.305 2.85 635 504 444
300 0.0601 0.0788 0.078 0.112 0.127 0.172 7200 0.334 2.79 722 563 496
400 0.047 0.0628 0.0617 0.107 0.122 0.168 6500 0.371 2.73 832 633 556
500 0.0366 0.0503 0.0488 0.104 0.119 0.165 5900 0.407 2.69 953 707 621
630 0.0283 0.0407 0.0388 0.101 0.117 0.162 5300 0.453 2.64 1083 783 716
800 0.0221 0.0341 0.0317 0.096 0.111 0.157 4600 0.528 2.58      
1000 0.0182 0.0246 0.024 0.0948 0.11 0.156 4000 0.597 2.54      
1200 0.015 0.0208 0.0201 0.0932 0.108 0.154 3700 0.646 2.51      

Cable Parameter

HEAVY DUTY

Sectional Area of Conductor Nom. Conductor Diameter Nom. Insulation Thickness Nom. Diamete Over insulation Screen Area on Each core No. and Diamter of Screened Wires Nom. Diamete Over Screened Wires Nom. Overall Diameter Approx. mass
mm2 mm mm mm mm2 no x mm mm mm kg/100m
35 6.8 5.5 19.1 34.4 24 x 1.35 23.4 27.5 115
50 8 5.5 20.3 48.7 34 x 1.35 24.6 28.7 140
70 9.6 5.5 21.9 68.7 48 x 1.35 26.2 30.5 185
95 11.5 5.5 23.8 68.7 48 x 1.35 28.1 32.4 215
120 13.1 5.5 25.3 68.7 48 x 1.35 29.6 34.1 245
150 14.5 5.5 26.8 68.7 48 x 1.35 31.1 35.6 275
185 16.1 5.5 28.4 68.7 48 x 1.35 32.7 37.4 310
240 18.5 5.5 30.8 68.7 48 x 1.35 35.1 40 375
300 20.7 5.5 33.2 68.7 48 x 1.35 37.7 42.6 440
400 23.6 5.5 36.1 68.7 48 x 1.35 40.6 46.1 535
500 26.5 5.5 39 68.7 48 x 1.35 43.5 49 640
630 29.9 5.5 42.7 68.7 48 x 1.35 47.2 53.4 765
800 35.9 5.5 48.8 68.7 48 x 1.35 53.3 59.7 965
1000 40.2 5.5 54.3 68.7 48 x 1.35 58.8 65.4 1160
1200 43.8 5.5 58.3 68.7 48 x 1.35 62.8 69.6 1360