BS 6622 Three Core Armoured 11kV 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
3.4
17.0
1.4
50/2.5
2.6
53.1
70
3.4
18.8
1.4
54/2.5
2.7
57.1
95
3.4
20.5
1.5
59/2.5
2.8
61.2
120
3.4
22.0
1.6
62/2.5
3.0
65.0
150
3.4
23.3
1.6
65/2.5
3.1
68.0
185
3.4
25.1
1.7
70/2.5
3.2
72.3
240
3.4
27.3
1.8
61/3.15
3.4
79.0
300
3.4
29.6
1.9
65/3.15
3.6
84.5
400
3.4
32.3
2.0
70/3.15
3.8
90.9

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
5.5
750
650
100
70
6.4
500
700
100
95
7.5
500
750
100
120
8.6
500
800
100
150
9.6
450
850
125
185
11.2
450
900
125
240
14.2
450
950
125
300
16.5
350
1050
125
400
19.7
300
1100
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
115
506
260
0.52
70
268
343
108
360
298
0.60
95
193
248
102
268
334
0.67
120
153
196
98.8
220
365
0.73
150
124
159
96.2
186
392
0.78
185
99.1
128
93.1
158
430
0.86
240
75.4
98
90.0
134
476
0.95
300
60.1
80
87.4
119
524
1.05
400
47.0
64
84.9
106
580
1.16

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