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

Construction

Cross-sectional area

mmsq

Minimum average thickness of insulation

mm

Nominal diameterover insulation
mm
Nominal area of copper wire screen
mm sq
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 mmsq

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

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
443.0
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
mmsq
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

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