Power Cables
PVC Insulated & Sheathed Unarmoured XLPE Insulated PVC/LSOH Sheathed LSOH Insulated Conduit Wires Fire Resistant Medium Voltage

Power Cables

BS 6622 Single Core Unarmoured (Copper Wire Screen) 15KV XLPE Stranded Copper Conductors

Construction

Cross-sectional area mm2 Minimum average thickness of insulation mm Nominal diameterover insulation
mm		 Nominal area of copper wire screen
mm2		 Nominal thickness of PVC oversheath
mm 		Nominal overall diameter of cable mm
70 4.5 21.2 16 1.8 28.1
95 4.5 22.9 16 1.9 30.1
120 4.5 24.4 16 1.9 31.8
150 4.5 25.7 16 2 33.1
185 4.5 27.5 16 2 35.1
240 4.5 29.7 25 2.1 37.3
300 4.5 32.0 25 2.2 39.8
400 4.5 34.7 35 2.3 42.7
500 4.5 37.6 35 2.4 45.9
630 4.5 41.5 35 2.5 50.0

Installation

cross-sectional area mm2 Approximate cable weight kg/m Nominal drum length
m 		Minimum bending radius mm Nominal internal diameter of ducts mm
70 0.9 1000 550 100
95 1.1 500 550 100
120 1.2 500 600 100
150 1.3 500 600 100
185 1.5 500 650 100
240 1.8 500 700 100
300 2 500 750 100
400 2.5 500 800 100
500 2.9 500 850 100
630 3.4 400 900 100

Electrical Performance

cross-sectional area mm2 Maximum DC resistance of conductor at 20 ℃ uohms/m Maximum AC resistance of conductor at 90 ℃ uohms/m Reactance at 50Hz
uohms/m 		Impedance at 50Hz uohms/m Maximum Capacitace PF/m Maximum charging current at normal voltage and frequency mA/m
70 443.0 568 127 582 232 0.63
95 320.0 410 120 427 258 0.70
120 253.0 325 116 345 281 0.77
150 206.0 365 112 288 301 0.82
185 164.0 211 109 237 329 0.9
240 125.0 161 105 192 363 0.99
300 100.0 130 101 165 398 1.09
400 77.8 102 97.9 141 439 1.2
500 60.5 81 95.1 125 483 1.32
630 46.9 64 91.5 112 542 1.46

Ratings

Cross-sectional area
mm2		 Laid direct in ground
Amps		 Drawn into ducts
Amps		 Laid in air
Amps 		One second short circuit rating of conductor
KA		 One second short circuit rating of copper per core
KA
70 210 215 240 6.3 2.6
95 250 255 300 8.5 2.6
120 280 285 355 11 2.6
150 320 315 380 13.5 2.6
185 360 350 435 17 2.6
240 415 405 510 22.3 4.3
300 475 455 600 28 4.3
400 540 510 700 36.6 5.8
500 610 570 810 46.2 5.8
630 680 640 930 58.3 5.8