Single Core Medium Cable to IEC 60502-2

Single Core Cables to IEC 60502

Application:

The single core cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 1.8/3KV to 26/35KV and frequency 50Hz. They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.
Standards: IEC 60502 Part 1(1.8/3KV)
IEC 60502 Part 2(3.6/6KV to 18/30KV
Conductor: Plain annealed copper or aluminium complying with IEC 60228/BS 6360. Copper conductors shall be stranded (class 2) and aluminium conductors shall be either solid or stranded (class 2).
Conductor Screen: The conductor screen consists of an extruded layer of non metallic, semi-conducting compound firmly bonded to the insulation to exclude all air voids. The conductor screen is not necessary for both PVC and EPR/HEPR insulated 1.8/3KV and 3.6/6KV cables.
Insulation: Insulation is of polyvinyl chloride (PVC) intended for 1.8/3KV and 3.6/6KV cables, cross-linked polyethylene compound (XLPE) or ethylene propylene rubber (EPR/HEPR).

Table 1. Insulation Thickness Of XLPE Or EPR/HEPR Insulation

Nom. CrossSection Area Insulation Thickness at Nominal Voltage
1.8/3KV (Um=3.6KV) 3.6/6KV (Um=7.2KV) 6/10KV (Um=12KV) 8.7/15KV (Um=17.5KV) 12/20KV (Um=24KV) 18/30KV (Um=36KV) 21/35KV (Um=42KV) 26/35KV (Um=42KV)
mm2 mm mm mm mm mm mm mm mm
  XLPE/EPR XLPE EPR XLPE/EPR XLPE/EPR XLPE/EPR XLPE/EPR XLPE/EPR XLPE/EPR
  Unscreened Screened
10 2.0 2.5 3.0 2.5 - - - - - -
16 2.0 2.5 3.0 2.5 3.4 - - - - -
25 2.0 2.5 3.0 2.5 3.4 4.5 - - - -
35 2.0 2.5 3.0 2.5 3.4 4.5 5.5 - - -
50 – 185 2.0 2.5 3.0 2.5 3.4 4.5 5.5 8.0 9.3 10.5
240 2.0 2.6 3.0 2.6 3.4 4.5 5.5 8.0 9.3 10.5
300 2.0 2.8 3.0 2.8 3.4 4.5 5.5 8.0 9.3 10.5
400 2.0 3.0 3.0 3.0 3.4 4.5 5.5 8.0 9.3 10.5
500 - 1600 2.2-2.8 3.2 3.2 3.2 3.4 4.5 5.5 8.0 9.3 10.5

*Insulation Thickness of PVC is 3.4mm (1- 1600mm sq) for 3.6/6KV cables.

Insulaton Screen: The insulation screen consists of an extruded layer of non metallic, semi- conducting compound extruded over the insulation. The extruded semi-conducting layer shall consist of bonded or cold strippable semi-conducting compound capable of removal for jointing or terminating. As an option, a semi-conducting tape may be applied over the extruded semi-conducting layer as a bedding for the metallic layer. The minimum thickness is 0.3 mm and the maximum resistivity is 500 Ohm-m at 90°C. The screen is tightly fitted to the insulation to exclude all air voids and can be easily hand stripped on site. The insulation screen is not necessary for both PVC and EPR/HEPR insulated 1.8/3KV and 3.6/6KV cables. The screen may be covered by semi-conductive water blocking swellable tape to ensure longitudinal watertightness.Metallic Layer: The metallic layer may be applied over the individual cores or the core assembly collectively.The following types of metallic layers are provided:1) Metallic Screen2) Concentric Conductor3) Metallic Sheath4) Metallic armourThe metallic screen shall consist of either copper tapes or a concentric layer of copper wires or a combination of tapes and wires to provide an earth fault current path. The concentric conductor is applied directly either over the insulation, or over the insulation screen or over an inner covering. The metallic sheath consists of lead or lead alloy applied as a tightly fitting seamless tube. The metallic armour consists of either flat wire armour, round wire armour, and double tape armour.

Table 2. Minimum Total Cross Section Of Metallic Screen

Nom. Cross-Section Area of Cable Min. Cross-Section of Metallic Screen DC Resistance of the Copper Wire Screen
mm² mm² mm
up to 120 16 1.06
150-300 25 0.72
400-630 35 0.51
800-1000 50 0.35

Separation Sheath (for armoured cable): The separation sheath comprises a layer of extruded PVC, PE or LSZH, applied under the armour .The nominal thickness is calculated by 0.02Du + 0.6mm where Du is the fictitious diameter under the sheath in mm. For cables without a lead sheath, the nominal separation sheath thickness shall not be less than 1.2mm. For cables where the separation sheath is applied over the lead sheath, the nominal separation sheath thickness shall not be less than 1.0mm.Lapped Bedding (for armoured lead sheathed cable): The lapped bedding consists of either impregnated/synthetic compounded paper tapes or a combination of two layers of these paper tapes followed by a few layers of compounded fabulous materials. The thickness is around 1.5mm.Armour (for armoured cable): The armour consists of round aluminium wire armour applied helically over an extruded separation sheath.Table 3. Round Armour Wire Diameter

Fictitious Diameter Under the Armour Armour Wire Diameter
mm mm
> <  
- 10 0.8
10 15 1.25
15 25 1.6
25 35 2.0
35 60 2.5
60 - 3.15

Over Sheath: Overall sheath comprises a layer of extruded thermoplastic compound (PVC, PE or LSZH can be offered as an option.) or elastomeric compound (polychlorprene CSP or chlorosulfonated PE). The nominal oversheath thickness is calculated by 0.035D+1 where D is the fictitiuous diameter immediately under the oversheath in mm. For unarmoured cables and cables with the oversheath not applied over the armour, metallic screen or concentric conductor, the nominal oversheath thickness shall not be less than 1.4mm. And for cables with oversheath applied over the armour, metallic screen or concentric conductor, the nominal oversheath thickness shall not be less than 1.8mm.

PHYSICAL PROPERTIES:

Operating Temperature: up to 70°C (PVC insulation); up to 90°C (XLPE or EPR insulation)Temperature Range: -5°C ( PVC sheath ); -20°C ( PE sheath )Short Circuit Temperature( 5 seconds maximum duration ): 140-160°C (PVC insulation);250°C (XLPE or EPR insulation)Bending Radius: 12 x OD

Table 4. Nominal /Operating /Testing Voltages

Rated Voltage Uo/U Operating Voltage (Um) Testing Voltage (rms)
1.8/3KV 3.6KV 6.5KV
3.6/6KV 7.2KV 12.5KV
6/10KV 12KV 21KV
8.7/15KV 17.5KV 30.5KV
12/20KV 24KV 42KV
18/30KV 36KV 63KV
21/35KV 42KV 73.5(53)*KV
26/35KV 42KV 91(65)*KV

*21/35KV and 26/35kV power frequency voltage test can be made under the following conditions: 2.5Uo x 30mins or 3.0Uo x 15mins. Numbers in brackets refer to the test values for 3.0Uo x 1.5mins.

Single Core 1.8/3KV (Um=3.6KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Steel Wire Armoured Cables
Nom. Insulation Thickness Copper Tape  Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
CU AL CU AL
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
10 2.0 0.1 16 1.8 13 240 180 1.2 1.6 1.8 18 460 400
16 2.0 0.1 16 1.8 13 300 200 1.2 1.6 1.8 19 530 430
25 2.0 0.1 16 1.8 15 410 250 1.2 1.6 1.8 20 650 500
35 2.0 0.1 16 1.8 16 510 300 1.2 1.6 1.8 21 780 560
50 2.0 0.1 16 1.8 17 640 350 1.2 1.6 1.8 22 930 640
70 2.0 0.1 16 1.8 19 850 440 1.2 1.6 1.8 24 1170 750
95 2.0 0.1 16 1.8 20 1130 540 1.2 1.6 1.8 26 1460 870
120 2.0 0.1 16 1.8 22 1370 630 1.2 1.6 1.8 27 1730 990
150 2.0 0.1 25 1.8 23 1650 730 1.2 1.6 1.8 29 2030 1110
185 2.0 0.1 25 1.8 25 2010 860 1.2 1.6 1.9 30 2430 1280
240 2.0 0.1 25 1.8 27 2570 1050 1.2 1.6 2.0 33 3040 1530
300 2.0 0.1 25 1.8 29 3160 1250 1.2 2.0 2.1 36 3760 1860
400 2.0 0.1 35 1.9 33 3980 1560 1.2 2.0 2.2 39 4660 2230
500 2.2 0.1 35 2.1 35.5 4910 1905 1.3 2.5 2.5 43 5930 2930
630 2.4 0.1 35 2.2 39.7 6340 2420 1.4 2.5 2.6 49 7370 3430
800 2.6 0.1 50 2.3 44.5 7890 2980 1.4 2.5 2.7 52 9070 4230
1000 2.8 0.1 50 2.5 49.4 9890 3700 1.5 2.5 2.9 56 11100 4950

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A C Resistance CU / AL Short Circuit Rating of Conductor CU / AL1 sec Capaci-tance Charging  Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat Spaced
cu AL cu AL
mm2 µΩ/m µΩm kA pF/m mA/m kA kA µΩ/m nH/m µΩ/ m µΩ/ m
10 1830/3080 2330/3920 1.4/0.9 182 0.27 2.6 0.2 151 201 384 558 2332 3846 2332 3840
16 1150/1910 1460/2420 2.2/1.4 201 0.29 2.6 0.3 140 193 362 546 1462 2411 1478 2420
25 727/1200 927/1538 3.6/2.3 222 0.32 2.6 0.3 131 185 345 535 936 1544 952 1554
35 524/868 668/1113 5.0/3.2 251 0.35 2.6 0.4 122 178 327 524 679 1121 695 1131
50 387/641 494/822 6.8/4.4 281 0.39 2.6 0.4 116 172 313 514 511 834 527 844
70 268/443 343/568 9.8/6.3 341 0.45 2.6 0.5 110 165 300 495 364 583 386 597
95 193/320 248/410 13.3/8.5 397 0.50 2.6 0.5 104 160 287 485 272 427 300 446
120 153/253 196/325 17.2/11.0 430 0.55 2.6 0.6 104 159 283 480 225 345 257 367
150 124/206 159/266 21.2/13.5 464 0.59 4.3 0.6 100 156 280 475 193 287 229 313
185 99.1/164 128/211 26.6/17.0 513 0.65 4.3 0.7 98 154 274 465 165 237 206 267
240 75.4/125 98/161 34.9/22.3 573 0.70 4.3 0.9 94 150 267 459 140 191 185 226
300 60.1/100 80/130 43.8/28.0 652 0.72 4.3 1.0 91 147 260 455 128 163 174 203
400 47.0/77.8 64/102 57.3/36.6 727 0.75 5.8 1.1 90 147 253 445 113 141 164 184
500 36.6/60.5 51/81 72.3/46.2 754 0.79 5.8 1.2 89 145 248 435 105 124 158 171
630 28.3/46.9 42/64 91.2/58.3 786 0.87 5.8 1.3 86 143 245 425 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 846 0.91 8.2 1.4 85 142 243 415 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 916 0.99 8.2 1.5 83 141 239 405 88 95 144 148

Single Core 3.6/6KV (Um=7.2KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom .Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
CU AL CU AL
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
10 2.5 0.1 16 1.8 16 320 260 1.2 1.6 1.8 22 610 550
16 2.5 0.1 16 1.8 16 390 290 1.2 1.6 1.8 22 680 580
25 2.5 0.1 16 1.8 18 500 340 1.2 1.6 1.8 23 810 660
35 2.5 0.1 16 1.8 19 610 400 1.2 1.6 1.8 24 940 730
50 2.5 0.1 16 1.8 20 750 450 1.2 1.6 1.8 26 1100 810
70 2.5 0.1 16 1.8 22 970 550 1.2 1.6 1.8 27 1350 930
95 2.5 0.1 16 1.8 23 1250 660 1.2 1.6 1.9 29 1670 1080
120 2.5 0.1 16 1.8 25 1500 760 1.2 1.6 1.9 31 1950 1200
150 2.5 0.1 25 1.8 26 1790 860 1.2 1.6 2.0 32 2270 1350
185 2.5 0.1 25 1.8 28 2150 1000 1.2 2.0 2.1 35 2770 1620
240 2.6 0.1 25 1.9 31 2770 1250 1.2 2.0 2.2 38 3440 1930
300 2.8 0.1 25 2.0 34 3400 1500 1.2 2.0 2.2 41 4120 2210
400 3.0 0.1 35 2.1 38 4280 1850 1.3 2.5 2.4 46 5250 2820
500 3.2 0.1 35 2.1 41.5 5325 2240 1.4 2.5 2.6 50 6520 3520
630 3.2 0.1 35 2.2 45.3 6745 2750 1.5 2.5 2.7 56 7960 4020
800 3.2 0.1 50 2.4 49.9 8290 3310 1.5 2.5 2.8 59 9660 4820
1000 3.2 0.1 50 2.5 54.2 10255 3990 1.6 2.5 3.0 63 11690 5540

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A C Resistance CU / AL Short Circuit Rating ofConductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Ratingof Copper Wire Screen1 sec Short Circuit Ratingof Copper TapeScreen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat Spaced
CU AL CU AL
mm2 µΩ/m µΩm kA pF/m mA/m kA kA µΩ/m nH/m µΩ/m µΩ/m
10 1830/3080 2330/3920 1.4/0.9 202 0.26 2.6 0.4 160 214 420 610 2332 3846 2345 3840
16 1150/1910 1460/2420 2.2/1.4 232 0.29 2.6 0.4 152 205 410 600 1462 2411 1478 2421
25 727/1200 927/1538 3.6/2.3 262 0.32 2.6 0.4 142 196 400 590 936 1544 952 1554
35 524/868 668/1113 5.0/3.2 291 0.35 2.6 0.5 133 187 390 580 679 1121 695 1131
50 387/641 494/822 6.8/4.4 321 0.39 2.6 0.5 121 179 380 570 511 834 527 844
70 268/443 343/568 9.8/6.3 371 0.45 2.6 0.6 115 173 370 550 364 583 386 597
95 193/320 248/410 13.3/8.5 417 0.50 2.6 0.6 110 168 350 540 272 427 300 446
120 153/253 196/325 17.2/11.0 459 0.55 2.6 0.7 107 165 340 520 225 345 257 367
150 124/206 159/265 21.2/13.5 494 0.59 4.3 0.7 103 161 330 510 193 287 229 313
185 99.1/164 128/211 26.6/17.0 543 0.65 4.3 0.8 100 158 320 500 165 237 206 267
240 75.4/125 98/161 34.9/22.3 583 0.70 4.3 0.9 97 155 310 490 140 191 185 226
300 60.1/100 80/130 43.8/28.0 602 0.72 4.3 1.0 95 153 300 490 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 627 0.75 5.8 1.1 92 150 290 480 113 141 164 184
500 36.6/60.5 51/81 72.3/46.2 654 0.79 5.8 1.2 90 147 290 470 105 124 158 171
630 28.3/46.9 42/64 91.2/58.3 726 0.87 5.8 1.3 87 145 280 460 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 786 0.91 8.2 1.4 85 143 270 460 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 856 0.99 8.2 1.5 83 141 260 450 88 95 144 148

Single Core 6/10KV (Um=12KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
CU AL CU AL
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
16 3.4 0.1 16 1.8 18 450 350 1.2 1.6 1.8 24 770 670
25 3.4 0.1 16 1.8 20 560 400 1.2 1.6 1.8 25 910 750
35 3.4 0.1 16 1.8 21 680 460 1.2 1.6 1.8 26 1040 820
50 3.4 0.1 16 1.8 22 810 520 1.2 1.6 1.8 28 1190 900
70 3.4 0.1 16 1.8 24 1050 620 1.2 1.6 1.9 29 1470 1040
95 3.4 0.1 16 1.8 25 1320 730 1.2 1.6 2.0 31 1780 1190
120 3.4 0.1 16 1.8 27 1580 840 1.2 2.0 2.0 34 2150 1410
150 3.4 0.1 25 1.9 28 1880 960 1.2 2.0 2.1 35 2480 1560
185 3.4 0.1 25 1.9 30 2250 1100 1.2 2.0 2.1 37 2890 1730
240 3.4 0.1 25 2.0 33 2870 1350 1.2 2.0 2.2 40 3570 2050
300 3.4 0.1 25 2.1 35 3490 1580 1.2 2.0 2.3 42 4230 2330
400 3.4 0.1 35 2.2 39 4350 1920 1.3 2.5 2.4 47 5320 2890
500 3.4 0.1 35 2.2 39.9 5235 2240 1.4 2.5 2.5 51 6510 3530
630 3.4 0.1 35 2.3 43.7 6675 2765 1.5 2.5 2.6 56 7960 4050
800 3.4 0.1 50 2.5 48.6 8225 3330 1.5 2.5 2.7 59 9670 4850
1000 3.4 0.1 50 2.6 52.9 10210 4030 1.6 2.5 2.9 63 11710 5570

* For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A C Resistance CU / AL ShortCircuit Rating ofConductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat spaced
CU AL CU AL
mm2 µΩ/m µΩm kA pF/m mA/m kA kA µΩ/m nH/m µΩ/m µΩ/m
16 1150/1910 1460/2420 2.2/1.4 187 0.39 2.6 0.5 152 216 480 680 1462 2411 1478 2421
25 727/1200 927/1538 3.6/2.3 208 0.42 2.6 0.5 144 210 460 660 936 1544 952 1554
35 524/868 668/1113 5.0/3.2 229 0.46 2.6 0.6 136 200 440 640 679 1121 695 1131
50 387/641 494/822 6.8/4.4 252 0.50 2.6 0.6 131 195 420 620 511 834 527 844
70 268/443 343/568 9.8/6.3 288 0.58 2.6 0.7 122 188 390 600 364 583 386 597
95 193/320 248/410 13.3/8.5 323 0.65 2.6 0.7 122 182 390 580 272 427 300 446
120 153/253 196/325 17.2/11.0 353 0.71 2.6 0.8 116 172 370 550 225 345 257 367
150 124/206 159/265 21.2/13.5 380 0.76 4.3 0.8 110 166 350 530 193 287 229 313
185 99.1/164 128/211 26.6/17.0 416 0.83 4.3 0.9 107 166 340 530 165 237 206 267
240 75.4/125 98/161 34.9/22.3 460 0.92 4.3 0.9 104 163 330 520 140 191 185 226
300 60.1/100 80/130 43.8/28.0 506 1.01 4.3 1.0 100 157 320 500 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 561 1.12 5.8 1.1 94 154 300 490 113 141 164 184
500 36.6/60.5 51/81.0 72.3/46.2 619 1.24 5.8 1.2 91 151 290 480 105 124 158 171
630 28.3/46.9 42/64.0 91.2/58.3 698 1.37 5.8 1.3 91 148 290 470 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 780 1.39 8.2 1.4 88 144 280 470 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 860 1.54 8.2 1.5 85 143 270 460 88 95 144 148

 * For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.

Single Core 8.7/15KV (Um=17.5KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
CU AL CU
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
25 4.5 0.1 16 1.8 22 640 480 1.2 1.6 1.8 28 1020
35 4.5 0.1 16 1.8 23 760 540 1.2 1.6 1.9 29 1170
50 4.5 0.1 16 1.8 24 900 610 1.2 1.6 1.9 30 1340
70 4.5 0.1 16 1.8 26 1140 710 1.2 1.6 2.0 32 1610
95 4.5 0.1 16 1.8 27 1420 830 1.2 2.0 2.1 35 2020
120 4.5 0.1 16 1.9 29 1700 950 1.2 2.0 2.1 36 2310
150 4.5 0.1 25 1.9 31 1990 1070 1.2 2.0 2.2 38 2660
185 4.5 0.1 25 2.0 32 2380 1230 1.2 2.0 2.2 39 3070
240 4.5 0.1 25 2.1 35 3010 1490 1.2 2.0 2.3 42 3750
300 4.5 0.1 25 2.1 37 3620 1720 1.3 2.5 2.4 46 4590
400 4.5 0.1 35 2.2 41 4490 2070 1.3 2.5 2.5 49 5550
500 4.5 0.1 35 2.3 43 5460 2460 1.3 2.5 2.6 52 6590
630 4.5 0.1 35 2.4 48 6790 2590 1.4 2.5 2.7 57 8060
800 4.5 0.1 50 2.6 52 8420 3570 1.5 2.5 2.8 61 9800
1000 4.5 0.1 50 2.7 55 10330 4180 1.6 2.5 3.0 65 10850

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A C Resistance CU / AL ShortCircuit Rating ofConductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat spaced
CU AL CU AL
mm2 µΩ/m µΩm kA pF/m mA/m kA kA µΩ/m nH/m µΩ/m µΩ/m
25 727/1200 927/1538 3.6/2.3 171 0.47 2.6 0.6 150 210 480 680 936 1544 952 1554
35 524/868 668/1113 5.0/3.2 187 0.51 2.6 0.6 141 207 460 660 679 1121 695 1131
50 387/641 494/822 6.8/4.4 204 0.57 2.6 0.7 138 195 440 640 511 834 527 844
70 268/443 343/568 9.8/6.3 232 0.63 2.6 0.7 132 188 420 600 364 583 386 597
95 193/320 248/410 13.3/8.5 258 0.71 2.6 0.8 126 182 400 580 272 427 300 446
120 153/253 196/325 17.2/11.0 281 0.74 2.6 0.8 119 179 380 570 225 345 257 367
150 124/206 159/265 21.2/13.5 301 0.79 4.3 0.9 113 176 360 560 193 287 229 313
185 99.1/164 128/211 26.6/17.0 329 0.87 4.3 0.9 110 170 350 540 165 237 206 267
240 75.4/125 98/161 34.9/22.3 363 0.96 4.3 1.0 107 166 340 530 140 191 185 226
300 60.1/100 80/130 43.8/28.0 398 1.03 4.3 1.1 104 160 330 510 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 439 1.17 5.8 1.2 97 157 310 500 113 141 164 184
500 36.6/60.5 51/81 72.3/46.2 483 1.28 5.8 1.3 94 154 300 490 105 124 158 171
630 28.3/46.9 42/64 91.2/58.3 534 1.42 5.8 1.4 91 151 290 480 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 590 1.61 8.2 1.4 91 147 290 470 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 640 1.75 8.2 1.5 88 144 280 460 88 95 144 148

Single Core 12/20KV (Um=24KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
Cu AL Cu AL
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
25 5.5 0.1 16 1.8 24 720 560 1.2 1.6 1.8 29 1200 980
35 5.5 0.1 16 1.8 25 840 620 1.2 1.6 1.9 30 1350 1070
50 5.5 0.1 16 1.8 26 990 690 1.2 2.0 2.0 33 1550 1250
70 5.5 0.1 16 1.8 28 1230 800 1.2 2.0 2.1 35 1840 1420
95 5.5 0.1 16 1.9 30 1530 940 1.2 2.0 2.1 37 2160 1570
120 5.5 0.1 16 2.0 31 1810 1050 1.2 2.0 2.2 38 2470 1730
150 5.5 0.1 25 2.0 33 2110 1190 1.2 2.0 2.2 40 2810 1890
185 5.5 0.1 25 2.1 35 2510 1360 1.2 2.0 2.3 42 3240 2090
240 5.5 0.1 25 2.1 38 3130 1610 1.3 2.5 2.4 45 4150 2580
300 5.5 0.1 25 2.2 40 3760 1860 1.3 2.5 2.5 48 4800 2890
400 5.5 0.1 35 2.3 43 4650 2220 1.4 2.5 2.6 52 5780 3350
500 5.5 0.1 35 2.4 46 5530 2545 1.5 2.5 2.7 55 6850 3850
630 5.5 0.1 35 2.5 50 6700 3100 1.5 2.5 2.9 60 8380 4400
800 5.5 0.1 50 2.6 55 8580 3690 1.6 2.5 3.0 64 10130 5270
1000 5.5 0.1 50 2.7 59 10620 4445 1.7 2.5 3.1 68 12180 6000

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A C Resistance CU / AL ShortCircuit Rating ofConductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat spaced
Cu AL Cu AL
mm2 µΩ/m µΩm kA pF/m mA/m kA kA µΩ/m nH/m µΩ/ m µΩ/m
25 727/1200 927/1538 3.6/2.3 142 0.62 2.6 0.6 162 214 490 680 936 1544 952 1554
35 524/868 668/1113 5.0/3.2 162 0.65 2.6 0.7 150 207 470 660 679 1121 695 1131
50 387/641 494/822 6.8/4.4 177 0.71 2.6 0.8 141 201 450 640 511 834 527 844
70 268/443 343/568 9.8/6.3 200 0.80 2.6 0.8 135 195 430 620 364 583 386 597
95 193/320 248/410 13.3/8.5 222 0.89 2.6 0.9 129 188 410 600 272 427 300 446
120 153/253 196/325 17.2/11.0 241 0.96 2.6 0.9 122 182 390 580 225 345 257 367
150 124/206 159/265 21.2/13.5 257 1.03 4.3 1.0 116 176 370 560 193 287 229 313
185 99.1/164 128/211 26.6/17.0 280 1.12 4.3 1.0 116 173 370 550 165 237 206 267
240 75.4/125 98/161 34.9/22.3 307 1.23 4.3 1.1 110 170 350 540 140 191 185 226
300 60.1/100 80/130 43.8/28.0 336 1.34 4.3 1.2 107 166 340 530 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 370 1.48 5.8 1.3 100 160 320 510 113 141 164 184
500 36.6/60.5 51/81 72.3/46.2 406 1.62 5.8 1.4 97 154 310 490 105 124 158 171
630 28.3/46.9 42/64 91.2/58.3 449 1.80 5.8 1.5 94 151 300 480 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 490 1.85 8.2 1.6 91 151 290 480 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 540 2.03 8.2 1.7 87 148 280 470 88 95 144 148

* For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.

Single Core 18/30KV (Um=24KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
Cu AL Cu AL
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
25 5.5 0.1 16 1.8 24 720 560 1.2 1.6 1.8 29 1200 980
35 5.5 0.1 16 1.8 25 840 620 1.2 1.6 1.9 30 1350 1070
50 5.5 0.1 16 1.8 26 990 690 1.2 2.0 2.0 33 1550 1250
70 5.5 0.1 16 1.8 28 1230 800 1.2 2.0 2.1 35 1840 1420
95 5.5 0.1 16 1.9 30 1530 940 1.2 2.0 2.1 37 2160 1570
120 5.5 0.1 16 2.0 31 1810 1050 1.2 2.0 2.2 38 2470 1730
150 5.5 0.1 25 2.0 33 2110 1190 1.2 2.0 2.2 40 2810 1890
185 5.5 0.1 25 2.1 35 2510 1360 1.2 2.0 2.3 42 3240 2090
240 5.5 0.1 25 2.1 38 3130 1610 1.3 2.5 2.4 45 4150 2580
300 5.5 0.1 25 2.2 40 3760 1860 1.3 2.5 2.5 48 4800 2890
400 5.5 0.1 35 2.3 43 4650 2220 1.4 2.5 2.6 52 5780 3350
500 5.5 0.1 35 2.4 46 5530 2545 1.5 2.5 2.7 55 6850 3850
630 5.5 0.1 35 2.5 50 6700 3100 1.5 2.5 2.9 60 8380 4400
800 5.5 0.1 50 2.6 55 8580 3690 1.6 2.5 3.0 64 10130 5270
1000 5.5 0.1 50 2.7 59 10620 4445 1.7 2.5 3.1 68 12180 6000

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A CResistance CU / AL ShortCircuit Rating of Conductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat spaced Trefoil Flat spaced Trefoil Flat spaced
Cu AL Cu AL
mm2 µΩ/m µΩ/m kA pF/m mA/m kA kA µΩ/m nH/m µΩ/ m µΩ/ m
50 387/641 494/822 6.8/4.4 138 0.83 2.6 1.0 151 214 480 680 511 834 527 844
70 268/443 343/568 9.8/6.3 154 0.92 2.6 1.0 144 201 460 640 364 583 386 597
95 193/320 248/410 13.3/8.5 169 1.01 2.6 1.1 138 195 440 620 272 427 300 446
120 153/253 196/325 17.2/11.0 183 1.10 2.6 1.1 132 188 420 600 225 345 257 367
150 124/206 159/265 21.2/13.5 194 1.16 4.3 1.2 126 182 400 580 193 287 229 313
185 99.1/164 128/211 26.6/17.0 210 1.26 4.3 1.2 122 182 390 580 165 237 206 267
240 75.4/125 98/161 34.9/22.3 229 1.37 4.3 1.3 119 176 380 560 140 191 185 226
300 60.1/100 80/130 43.8/28.0 249 1.49 4.3 1.4 113 173 360 550 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 273 1.64 5.8 1.5 107 163 340 520 113 141 164 184
500 36.6/60.5 51/81 72.3/46.2 298 1.79 5.8 1.6 104 163 330 520 105 124 158 171
630 28.3/46.9 42/64 91.2/58.3 327 1.96 5.8 1.7 100 160 320 510 97 110 151 160
800 22.1/36.7 35/55 114.4/75.0 350 1.98 8.2 1.8 97 154 310 490 92 101 147 153
1000 17.6/29.1 30/46 143.0/94.0 380 2.15 8.2 1.9 94 149 300 490 88 95 144 148

* For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.

Single Core 21/35KV (Um=42KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
Cu Al Cu Al
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
50 9.3 0.1 16 2.0 35.7 1526 1239 1.2 2.0 2.3 43.5 2331 2116
70 9.3 0.1 16 2.1 37.6 1809 1393 1.2 2.5 2.4 46.6 2680 2325
95 9.3 0.1 16 2.2 39.4 2123 1555 1.2 2.5 2.5 48.4 2981 2482
120 9.3 0.1 16 2.2 40.8 2405 1688 1.4 2.5 2.5 49.8 3487 2867
150 9.3 0.1 25 2.2 42.3 2733 1838 1.4 2.5 2.6 51.5 3870 3055
185 9.3 0.1 25 2.3 44.7 3216 2082 1.4 2.5 2.6 53.5 4420 3370
240 9.3 0.1 25 2.4 46.9 3766 2333 1.4 2.5 2.7 55.8 4981 3676
300 9.3 0.1 25 2.4 49.3 4408 2605 1.4 2.5 2.8 58.5 5661 3971
400 9.3 0.1 35 2.5 52.3 5473 3057 1.6 2.5 2.9 61.7 6865 4550

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A CResistance CU / AL ShortCircuit Ratingof Conductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat spaced
Cu Al Cu Al
mm2 µΩ/m µΩ/m kA pF/m mA/m kA kA µΩ/m nH/m µΩ/ m µΩ/ m
50 387/641 494/822 6.8/4.4 130 0.89 2.6 1.1 156 220 495 700 511 834 527 844
70 268/443 343/568 9.8/6.3 144 0.98 2.6 1.1 150 204 475 650 364 583 386 597
95 193/320 248/410 13.3/8.5 159 1.06 2.6 1.2 142 198 455 630 272 427 300 446
120 153/253 196/325 17.2/11.0 171 1.18 2.6 1.2 137 191 435 610 225 345 257 367
150 124/206 159/265 21.2/13.5 180 1.26 4.3 1.3 131 185 415 590 193 287 229 313
185 99.1/164 128/211 26.6/17.0 193 1.34 4.3 1.3 125 185 400 590 165 237 206 267
240 75.4/125 98/161 34.9/22.3 210 1.45 4.3 1.4 123 179 390 570 140 191 185 226
300 60.1/100 80/130 43.8/28.0 228 1.57 4.3 1.5 116 176 370 560 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 249 1.74 5.8 1.6 110 166 350 530 113 141 164 184

* For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.

Single Core 26/35KV (Um=42KV) Dimensional Data

Nom. Cross-Section Area   Unarmoured Cables Aluminium Wire Armoured Cables
Nom. Insulation Thickness Copper Tape Thickness Copper Wire Screen Area* Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight Nom. Bedding Thickness Armour Wire Size Nom. Sheath Thickness Approx. Overall Diameter Approx. Weight
Cu Al Cu Al
mm2 mm mm mm2 mm mm kg/km mm mm mm mm kg/km
50 10.5 0.1 16 2.1 38.3 1689 1402 1.2 2.5 2.5 46.8 2580 2395
70 10.5 0.1 16 2.2 40.2 1980 1564 1.2 2.5 2.5 48.8 2937 2611
95 10.5 0.1 16 2.2 41.8 2283 1714 1.2 2.5 2.6 50.9 3206 2737
120 10.5 0.1 16 2.3 43.4 2588 1871 1.4 2.5 2.6 51.5 3753 3177
150 10.5 0.1 25 2.3 44.9 2923 2028 1.4 2.5 2.7 53.8 4143 3371
185 10.5 0.1 25 2.4 47.3 3415 2281 1.4 2.5 2.7 55.6 4694 3693
240 10.5 0.1 25 2.5 49.5 3975 2542 1.4 2.5 2.8 57.6 5258 4005
300 10.5 0.1 25 2.5 51.9 4625 2822 1.4 2.5 2.9 60.8 5940 4301
400 10.5 0.1 35 2.6 54.9 5704 3288 1.6 2.5 3.0 63.6 7155 4894

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

Nom. Cross-Section Area D C Resistance CU / AL A CResistance CU / AL ShortCircuit Ratingof Conductor CU / AL1 sec Capaci-tance Charging Current Short Circuit Rating of Copper Wire Screen1 sec Short Circuit Rating of Copper Tape Screen1 sec Reactance Inductance Impedance
Trefoil Flat Spaced Trefoil Flat Spaced Trefoil Flat spaced
Cu Al Cu Al
mm2 µΩ/m µΩ/m kA pF/m mA/m kA kA µΩ/m nH/m µΩ/ m µΩ/ m
50 387/641 494/822 6.8/4.4 126 0.95 2.6 1.2 161 227 510 720 511 834 527 844
70 268/443 343/568 9.8/6.3 138 1.04 2.6 1.2 154 207 490 660 364 583 386 597
95 193/320 248/410 13.3/8.5 151 1.13 2.6 1.3 147 202 470 640 272 427 300 446
120 153/253 196/325 17.2/11.0 161 1.24 2.6 1.3 142 194 450 620 225 345 257 367
150 124/206 159/265 21.2/13.5 169 1.36 4.3 1.4 136 188 430 600 193 287 229 313
185 99.1/164 128/211 26.6/17.0 176 1.40 4.3 1.4 128 188 410 600 165 237 206 267
240 75.4/125 98/161 34.9/22.3 192 1.51 4.3 1.5 128 183 400 580 140 191 185 226
300 60.1/100 80/130 43.8/28.0 209 1.64 4.3 1.6 119 180 380 570 126 163 174 203
400 47.0/77.8 64/102 57.3/36.6 227 1.80 5.8 1.7 114 170 360 540 113 141 164 184

* For capacitance & charging current values, multiply values shown by 1.2 for EPR insulated cables.

Current Rating for Single Core 1.8/3KV(Um=3.6KV ) to 26/35KV(Um=42KV) XLPE Insulation

Nom. Cross-Section Area Buried direct in Ground Laid in Single Way Duct Laid in Air
Trefoil Flat spaced Trefoil Flat Touching Trefoil Flat Touching Flat spaced
CU AL CU AL CU AL CU AL CU AL CU AL CU AL
mm2 A A A A A A A
10 84 59 87 62 78 55 98 56 103 75 106 77 122 88
16 109 84 113 88 103 80 104 81 125 97 128 99 150 116
25 140 108 144 112 132 102 133 103 163 127 167 130 196 153
35 166 129 172 134 157 122 159 123 198 154 203 157 238 185
50 196 152 203 157 186 144 188 146 238 184 243 189 286 222
70 239 186 246 192 227 176 229 178 296 230 303 236 356 278
95 285 221 293 229 271 210 274 213 361 280 369 287 434 338
120 323 252 332 260 308 240 311 242 417 324 426 332 500 391
150 361 281 366 288 343 267 347 271 473 368 481 376 559 440
185 406 317 410 324 387 303 391 307 543 424 550 432 637 504
240 469 367 470 373 447 351 453 356 641 502 647 511 745 593
300 526 414 524 419 504 397 510 402 735 577 739 586 846 677
400 590 470 572 466 564 451 571 457 845 673 837 676 938 769
500 650 530 672 546 604 504 661 537 935 773 938 776 1118 919
630 700 600 882 646 654 554 771 617 1045 883 1048 886 1318 1089
800 750 660 1002 756 694 594 871 717 1145 983 1148 986 1528 1279
1000 800 720 1112 856 724 644 971 807 1235 1083 1238 1086 1738 1469

Current Rating for Single Core 1.8/3KV(Um=3.6KV) to 26/35KV(Um=42KV) EPR Insulation

Nom. Cross-Section Area Buried direct in Ground Laid in Single Way Duct Laid in Air
Trefoil Flat spaced Trefoil Flat Touching Trefoil Flat Touching Flat spaced
CU AL CU AL CU AL CU AL CU AL CU AL CU AL
mm2 A A A A A A A
10 81 57 83 58 74 52 94 53 94 68 97 70 110 79
16 106 82 109 84 99 77 100 78 116 90 119 92 138 107
25 136 105 140 109 128 99 129 100 153 119 156 121 181 141
35 162 126 167 130 153 118 154 120 186 144 190 147 221 171
50 192 149 198 153 181 140 183 142 224 174 229 178 266 207
70 234 182 242 188 222 172 224 174 280 218 287 223 334 259
95 280 217 289 224 266 206 269 208 343 266 352 273 409 317
120 319 247 329 256 303 235 306 238 398 309 407 317 474 368
150 357 277 369 287 341 264 344 267 454 352 465 361 540 419
185 403 314 417 325 386 300 390 303 522 406 534 417 621 484
240 467 364 484 377 449 350 454 354 619 483 634 495 736 575
300 526 411 545 426 509 397 515 401 712 556 728 570 843 659
400 597 471 618 487 580 456 588 462 825 651 843 667 977 770
500 657 531 718 567 620 509 678 542 915 751 849 767 1157 920
630 707 601 928 667 670 559 788 622 1025 862 1054 876 1357 1090
800 757 661 1048 777 710 599 888 722 1125 961 1154 977 1567 1280
1000 807 721 1158 877 740 649 988 812 1215 1061 1244 1077 1777 1470

Current Rating Conditions:

Ground Temperature: 20°CAmbient Temperature (air): 30°CDepth of Soil: 0.8mThermal Resistance of Soil: 1.5K•m/W

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