BS 6622 Single Core Unarmoured (Copper Wire Screened) 11kV XLPE Stranded Aluminium Conductors

Construction

cross-sectional area mmsq
Minimum average thickness of insulation mm

Nominal diameter over insulation
mm

 
Nominal area of copper wire screen
mm sq
Nominal average thickness of PVC oversheath
mm
Nominal overall diameter of cable mm
70
3.4
18.8
16
1.7
25.7
95
3.4
20.5
16
1.8
27.4
120
3.4
22.0
16
1.8
29.2
150
3.4
23.3
16
1.9
30.5
185
3.4
25.1
16
1.9
32.5
240
3.4
27.3
25
2
34.9
300
3.4
29.6
25
2.1
37.2
400
3.4
32.3
35
2.2
40.1
500
3.4
35.2
35
2.3
13.2
630
3.4
39.1
35
2.4
17.4

Installation

cross-sectional area mmsq
Approximate cable weight kg/m
Nominal drum length
m
Minimum bending radius mm
Nominal internal diameter of ducts mm
70
0.8
1000
400
100
95
0.9
1000
450
100
120
1.1
500
450
100
150
1.2
500
450
100
185
1.3
500
500
100
240
1.7
500
550
100
300
1.9
500
600
100
400
2.3
500
650
100
500
2.7
500
650
100
630
3.2
400
750
100

Electrical Performance

cross-sectional area mmsq
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
568
121
581
288
0.58
95
320
410
114
426
323
0.65
120
253
325
110
343
353
0.71
150
206
265
107
286
380
0.76
185
164
211
104
234
416
0.83
240
125
161
100
190
460
0.92
300
100
130
96.9
162
506
1.01
400
77.8
102
94.0
138
561
1.12
500
60.5
81
91.3
122
619
1.24
630
46.9
64
88.1
109
697
1.37

Ratings

Cross-sectional area
mmsq
Current Ratings
Short circuit ratings
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
295
8.5
2.6
120
280
285
335
11.0
2.6
150
320
315
380
13.5
2.6
185
360
350
435
17.0
2.6
240
415
405
510
22.3
4.3
300
475
455
600
28.0
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

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