ENERGY CABLES
Electric Utility Cables
Paper Lead 1C
19/33kV, Copper
APPLICATION
In urban networks for primary supply to underground residential
distribution substations. Main feeders to commercial and
industrial projects. The lead sheath provides an earth fault
capacity adequate for many installations although it is fixed and
usually less than the equivalent XLPE copper wire screened
cable.
STANDARD
VOLTAGE
CONDUCTOR
INSULATION
SHEATH
MAX. OPERATING
TEMP.
AS 1026:1992
BS 6480:1988
19000/33000V
Compacted Annealed Copper
Mass Impregnated
(Non Draining) Paper
PVC, 4V-75 or MDPE
65 °C
TECHNICAL SPECIFICATIONS
CONDUCTOR
2
OVERALL
DIAMETER
APPROXIMATE
MASS
MINIMUM
BENDING RADIUS
mm
(No./mm)
MINIMUM
mm
MAXIMUM
mm
MDPE
Kg/Km
PVC
Kg/Km
INSTALLED
mm
DURING
INSTALLATION
mm
50
70
95
120
150
185
240
300
400
500
630*
19 strands
19 strands
19 strands
19 strands
19 strands
37 strands
37 strands
37 strands
59 strands
60 strands
92 strands
29.9
31.7
33.2
35.2
36.3
38.2
41.2
43.8
47.2
50.6
55.7
31.5
33.4
35.0
37.1
38.3
40.2
43.3
46.1
49.6
53.1
58.4
2600
3000
3400
3800
4300
4800
5700
6600
7900
9500
11500
2800
3200
3600
4000
4400
4900
5900
6700
8000
9600
11900
630
670
700
750
770
810
870
930
1000
1070
1160
660
700
740
780
800
850
910
970
1040
1120
1210
*Conductor uncompacted.
New Zealand/Energy/Electric Utility Cables/MV Paper Lead/Screened 33kV/1C, Copper │ VERSION:

Lengths and packing can
be supplied to customer’s
requirements.

For glanding details,
contact your local service
centre.

Bending radii to BS 6480
TECHNICAL SPECIFICATIONS - Continued
NOMINA
L
AREA
mm²
CURRENT RATING (a)
ELECTRICAL CHARACTERISTICS
Buried
Direct
Max. DC
Resistance
@ 20°C
ohm/km
Buried In Ducts
(Trefoil)
Max. AC
Resistance
@ 65°C
ohm/km
Inductance
mH/km
Equivalent
Star
Reactance
ohm/km
Capacitance
µF/km
3 Phase
Voltage
Drop
mV/A.m
1 Sec Fault
Rating (b)
3 Phase
Symmetrical
kA
0.81
0.58
0.43
0.37
0.32
0.27
0.24
0.22
0.20
0.19
0.18
5.7
7.9
10.7
13.6
16.9
20.9
27.1
33.9
45.2
56.5
71.2
A
A
50
184
176
0.379
0.446
0.452
0.142
0.230
70
222
212
0.262
0.309
0.426
0.134
0.259
95
264
251
0.195
0.230
0.402
0.126
0.292
120
300
285
0.150
0.177
0.385
0.121
0.320
150
340
320
0.122
0.144
0.370
0.116
0.356
185
381
358
0.0972
0.109
0.337
0.112
0.387
240
439
408
0.0740
0.0886
0.343
0.108
0.430
300
488
450
0.0590
0.0714
0.331
0.104
0.469
400
569
520
0.0461
0.0568
0.320
0.101
0.517
500
633
573
0.0366
0.0464
0.310
0.098
0.568
630
707
634
0.0283
0.0376
0.299
0.094
0.632
(a) Based on 65°C maximum conductor temperature, burial depth of 0.8m, soil temperature of 15°C and thermal
resistivity of 1.2°Cm/W.
(b) For fault durations other than one second, divide the appropriate given value by the square root of the required
time (in seconds).
Conductor fault ratings are based on an initial temperature of 65°C and a final temperature of 150°C.
CONDUCTOR
NOMINAL
AREA
mm2
NOMINAL
DIAMETER
mm
LEAD ALLOY SHEATH
MIN. INSULATION
BETWEEN
CONDUCTOR &
SHEATH
mm
MINIMUM
THICKNESS
mm
DIAMETER
OVER SHEATH
MINIMUM
MAXIMUM
mm
mm
NOMINAL
AREA
mm²
50
8.1
7.3
1.5
27.1
28.6
130
70
9.8
7.3
1.5
28.9
30.5
139
95
11.4
7.1
1.6
30.4
32.1
156
120
12.9
7.1
1.6
32.2
33.9
166
150
14.3
6.8
1.7
33.3
35.1
182
185
16.0
6.8
1.7
35.2
37.1
193
240
18.4
6.8
1.8
38.0
40.0
220
300
20.3
6.8
1.8
40.4
42.5
235
400
23.5
6.8
1.8
43.6
45.8
254
500
26.6
6.8
2.0
47.0
49.3
304
630
32.7
6.8
2.1
51.1
53.7
348
(c) For fault durations other than one second, divide the appropriate given value by the square root
of the required time (in seconds).
1 SEC
FAULT
RATING (c)
kA
3.9
4.2
4.7
5.0
5.5
5.9
6.7
7.1
7.7
9.2
10.5
Sheath fault ratings are based on an initial temperature of 55°C and a final temperature of 250°C.
GENERAL CABLE NEW ZEALAND LIMITED
75 – 89 Main South Road
Riccarton, Christchurch
PO Box 8044, Riccarton, Christchurch, New Zealand
Phone:
0800 CABLES (0800 222 537)
FAX:
0800 242 267
EMAIL:
[email protected]
New Zealand/Energy/Electric Utility Cables/MV Paper Lead/Screened 33kV/1C, Copper │ VERSION: 1C Copper v050412