BS 6622 Three Core Armoured 15KV XLPE Stranded Copper Conductors

Construction

cross-sectional area mmsq
Minimum average thickness of insulation mm

Nominal diameter over insulation
mm

 
Nominal thickness of PVC bedding
mm
Nominal number and diameter of armoured wires no./mm
Nominal thickness of PVC oversheath
mm
Nominal overall diameter of cable mm
50
4.5
19.4
1.5
56/2.5
2.8
58.8
70
4.5
21.2
1.5
60/2.5
2.9
62.9
95
4.5
22.9
1.6
65/2.5
3.0
67.0
120
4.5
24.4
1.7
68/2.5
3.1
70.6
150
4.5
25.7
1.7
71/2.5
3.2
73.6
185
4.5
27.5
1.8
61/3.15
3.4
79.4
240
4.5
29.7
1.9
65/3.15
3.6
84.7
300
4.5
32.0
2.0
70/3.15
3.7
90.1
400
4.5
34.7
2.1
75/3.15
4.0
96.7

Installation

cross-sectional area mmsq
Approximate cable weight kg/m
Nominal drum length
m
Minimum bending radius mm
Nominal internal diameter of ducts mm
50
6.1
500
900
100
70
7.1
500
950
100
95
8.3
500
1050
125
120
9.4
500
1100
125
150
10.5
450
1150
125
185
12.9
400
1200
125
240
15.2
350
1300
125
300
17.6
300
1400
125
400
20.8
250
1500
125

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
50
387
494
123
508
211
0.58
70
268
343
115
361
240
0.65
95
193
248
109
270
267
0.73
120
153
196
105
223
291
0.79
150
124
159
102
189
312
0.85
185
99.1
128
98.6
162
340
0.93
240
75.4
98
95.2
137
375
1.02
300
60.1
80
92.2
123
411
1.12
400
47
64
89.3
110
454
1.24

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
50
210
180
220
6.8
Typically
less
then
1kA
70
255
215
270
9.8
95
300
255
330
13.3
120
340
290
375
17.2
150
380
330
430
21.2
185
430
370
490
26.6
240
490
425
570
34.9
300
540
470
650
43.8
400
590
520
700
57.3