ht xlpe cables catalogue.pdf
TRANSCRIPT
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KEC
INTERNATIONALLTD.
RPGENTERPRISES
KEC is one of the oldest players in the industry and global leader in the Infrastructure Engineering, Procurement and Construction
space. Established in 1945, KEC has a significant presence in the segments of Power Transmission & Distribution, Cabling, Railway,
Telecom and Water Resource management. KECs strengths lie in Engineering, Design, Manufacture and Testing, supply of
transmission towers, telecom towers, cables and Construction of turnkey infrastructure projects. KECs focused approach towards
project management enables the creation of world class products, innovative solutions, customized to overcome extreme terrain
and climate. With proven technical prowess in handling mega projects and superior project management expertise, KEC has made
an indelible mark on the world map by constantly and consistently reengineering itself to retain its position of leadership in theareas of quality, technology, capacity and capability.
RPG Enterprises is one of Indias largest business conglomerates. Since its inception in 1979, RPG Enterprises has been one
of the fastest growing business houses in India. RPG Enterprises has diverse businesses under its fold ranging from Power,
Tyres, Infrastructure, IT to Pharma. The Groups management comprises individuals extensively qualified and experienced in
their domain areas. RPGs wide ranging business invite growing returns and high esteem in the eyes of all its stakeholders. The
Group lives by values of keen entrepreneurial skills, performance and excellence.
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1
RPG Cables, a division of KEC International Limited has established itself as
one of the leading manufacturers of Power, Control & Telecommunication
cables in India. One of the oldest cable manufacturing company (1958), we
have been serving the industries with quality cables for over 5 decades. The
state-of-the art manufacturing plants are located at Thane for HT cables
upto 33 kV and EHV cables upto 132 kV and Silvassa for LT cables upto 1.1
kV (power and control). The manufacturing facility at Mysore manufactures
LT Power and Control Cables, apart from Telecom Cables (Fiber Optic & Jelly
Filled), Instrumentation, Fire Survival and Signaling Cables. RPG Cables also
offers expertise in Turnkey contracts involving cable laying, jointing, testing
and commissioning. To keep pace with the changing needs of the customers
and requirement of cables for voltage grades above 132 kV, the company is
coming up with a new manufacturing unit near Halol, Gujarat with capability
to manufacture cables up to 400 kV. The brand name Asian is synonymous
with stringent norms in quality, environment and safety management. The
plants have been ISO 9000 and ISO 14000 certified.
RPG cables has been making major export thrust in keeping with its global
aspirations. We match international quality standards and cables can be
designed to comply with required international standards. The division
has also been given recognition by the Govt. of Maharashtra for achieving
excellence in Exports.
COMPANYPROFILE Thane Plant
Silvassa Plant
Mysore Plant
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HV
CABLE
STECHNICALCATALO
GUE
2
ELEMENTS INHV CABLES
CABLE CONSTRUCTION
Conductor
Stranded compacted circular conductors are composed of
Electrolytic grade high conductivity Aluminium wires or Copper,
Circular, stranded with high compactness.
Conductor Screening / Shielding
Conductors for cables rated above 3.3 kV are screened with anextruded layer of semiconducting compound . This eliminates
the chance of electrical discharge at the interface between
conductor and insulation.
Insulation
The insulation is of natural, chemically cross linked polyethylene
with high di-electric strength is extruded over semiconducting
conductor screening. Thickness of insulation is as per the
relevant tables.
Insulation screeningCables rated above 3.3 kV will have a screening consisting
of non metallic part, in combination with a metallic part over
the insulation. The non-metallic part of the screening consists
TYPICAL CROSS-SECTIONAL SKETCHES
2
CONDUCTORAluminium/Copper
CONDUCTOR SCREEN
INSULATION
NON METALLIC INSULATION SCREEN
METALLIC INSULATION SCREEN
PVC INNER SHEATH
GALVANISED STEEL ARMOUR
PVC OUTER SHEATH
FILLERS
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of either a semiconducting tape applied helically or a layer of
extruded semi-conducting compound or both. The conductor
screening, XLPE insulation and the non-metallic part of
insulation screening are all extruded in one operation by
TRIPLE EXTRUSION which eliminates the formation of microvoids during the extrusion and curing resulting in longer life
of cables.
Over this layer a bare annealed copper tape / copper wire
is applied.
Laying up
Insulated conductors of three cores are laid up together,
interstices filled up with non hygroscopic fillers to make the
cable circular.
The phase identification of three core cable is done either
by coloured / numbered strips applied on the cores or by the
numerals printed on the cores.
Inner Sheath
The cable cores are provided with a common covering of
wrapped plastic tapes or by an extruded PVC sheath or
pressure extruded PVC sheath, as per the requirement of the
customer.
Armouring
GI Round wire / Flat strip / Double steel tape armouring is
applied over the inner sheath in case of three core cables. The
direction of lay of armouring is opposite to that of cores.
For single core cables non magnetic Aluminium armouring is
applied over non metallic part of insulation screening or over
the inner sheath.
Outer sheathThe cables are provided with an extruded PVC / PE TYPE
ST7 / LSZH outer sheath over the armour. For Single core
unarmoured cables the outer sheath is extruded over the non
magnetic metallic part of insulation screening. Outer sheath
is generally of Black colour, but any colour as per customer
requirement can be provided.
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HV
CABLE
STECHNICALCATALO
GUE
4
ELEMENTS INHV CABLES
QUALITY ASSURANCE AND TESTING
Asian brand cables of RPG Cables division of KEC international
Ltd. are manufactured with latest state of the art machinery
and testing facilities. The experienced technical staff ensureshigh quality standards at all the levels of processing of the
cables from Raw material stage till final testing.
The cables are tested in accordance with IS:7098
(Part 2) -1985 / IEC / BS / Customer Specifications and internal
Company Standards .
Following Routine test are carried out on each of the cable
before offering cables for inspection
i. Conductor Resistance Test
ii. Partial Discharge Test
iii. High Voltage Test
Elements Material Standards
Conductor Compacted stranded - Class 2 , Annealed
Plain Copper / Aluminium
IS:8130 / IEC: 60228 / BS 6360
Conductor Screen Extruded Semiconducting Compound IS:7098 part 2, IEC: 60502 part 2,
BS:6622, BS:7835
Insulation XLPE IS:7098 part 2, IEC: 60502 part 2,
BS:6622, BS:7835
Insulation Non - Metallic Screen Extruded Semiconducting Compound IS:7098 part 2, IEC: 60502 part 2,
BS:6622, BS:7835
Insulation metallic Screen Copper Wire / Tape IS:7098 part 2, IEC: 60502 part 2,
BS:6622, BS:7835
Fillers Non Hygroscopic PVC / Polypropylene
Fiber
Inner Sheath / Bedding PVC ST2/ Polyethylene ST 7 IS:7098 part 2, IEC:60502 part 2,BS:6622, BS:7835
Armour GI / Aluminium Round wire / Flat strip /
Double steel tape
IS:7098 part 2, IS:3975 IEC:60502 part 2,
BS:6622, BS:7835
Outer Sheath PVC ST2 / FR PVC / FRLS PVC /
Polyethylene ST 7/ LSZH
IS:7098 part 2, IEC:60502 part 2,
BS:6622, BS:7835
Construction of HT Cables
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5
The cables are subjected to following Type Tests as per
IS 7098 (Part 2) -1985 / IEC / BS / Customer Specifications.
i. Electrical Type tests
ii. Non Electrical Type Tests
iii. Special Tests
At RPG Cables our testing labs are of the highest standards,
well equipped with latest equipments for accurate results and
quality controls. Following In house tests can be carried out
1. Oxygen Index and Temperature Index tests as per
ASTM-D-2863 / IS -10810, part-58
2. Flammability Characteristics of cable as per
IEC-332(Part-I), IEC-332(part-III) and IEEE-383/IS -10810,
part-53
3. Flammability Characteristics of Cable as per Swedish
standard SS4241475 Class F3
4. Determination of amount of halogen acid gas
evolved during combustion of outer sheath as per
IEC-754(Part-I) / IS-10810, part-59
5. Determination of smoke generation of outer sheath under
fire as per ASTM-D-2843
Minimum Bending Radii of HT XLPE Cables
1 core cable Multicore Cable
6.6 kV to 11 kV - 15 x D 15 x D
Above 11 kV - 20 x D 15 x D
Where D is Overall diameter of Cable
Guide lines for Cable Laying
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HVCABLESTECHNICALCATALOGUETABLE1
:
COMMONPARAMETER
S
NominalAre
a
ofConducto
r
Aluminium
Conductor
CopperConductor
NominalThicknessofInsulation
Minimum
No.
ofwires
D.C.
Resis-
tance
Shortckt
rating
Minimum
No.
ofwires
D.C.
Resis-
tance
Sho
rtckt
ra
ting
1.9
/3.3and3.3
/3.3
kV
3
.8/6.6
kV
6.3
5/11kV
11/11kV
12.7
/22kV
19/33kV
(sq.mm)
(Nos.)
(Ohm/km)
(kA/se
c.)
(Nos.)
(Ohm/km)
(kA
/sec.)
SingleCore
armoured
cable(mm)
SingleCore
unarmoured
and3core
cable(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
3535
6
0.8
680
3.29
6
0.5
240
5
.01
2.5
2.2
-
-
-
-
-
5050
6
0.6
410
4.70
6
0.3
870
7
.15
2.5
2.2
2.8
3.6
5.5
6.0
-
7070
12
0.4
430
6.58
12
0.2
680
10.0
1
2.5
2.2
2.8
3.6
5.5
6.0
-
9595
15
0.3
200
8.93
15
0.1
930
13.5
9
2.5
2.2
2.8
3.6
5.5
6.0
8.8
120
120
15
0.2
530
11.3
0
18
0.1
530
17.1
6
2.5
2.2
2.8
3.6
5.5
6.0
8.8
150
150
15
0.2
060
14.1
0
18
0.1
240
21.4
5
2.5
2.2
2.8
3.6
5.5
6.0
8.8
185
185
30
0.1
640
17.4
0
30
0.0
991
26.4
6
2.5
2.2
2.8
3.6
5.5
6.0
8.8
240
240
30
0.1
250
22.6
0
34
0.0
754
34.3
2
2.5
2.2
2.8
3.6
5.5
6.0
8.8
300
300
30
0.1
000
28.2
0
34
0.0
601
42.9
0
2.5
2.2
3.0
3.6
5.5
6.0
8.8
400
400
53
0.0
778
37.6
0
53
0.0
470
57.2
0
2.6
2.2
3.3
3.6
5.5
6.0
8.8
500
500
53
0.0
605
47.0
0
53
0.0
366
71.5
0
2.8
2.4
3.5
3.6
5.5
6.0
8.8
630
630
53
0.0
469
59.2
2
53
0.0
283
90.0
9
3.0
2.6
3.5
3.6
5.5
6.0
8.8
800
800
53
0.0
367
75.2
0
53
0.0
221
11
4.4
0
3.3
2.8
3.5
3.6
5.5
6.0
8.8
1000
1000
53
0.0
291
94.0
0
53
0.0
176
14
3.0
0
3.5
3.0
3.6
3.6
5.5
6.0
8.8
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9
Nominal
Areaof
Conductor
Nominal
Thickness
of
O/Sheath
Aluminium
(A2XY)
Copper(2XY)
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
InDuctat
30C
In
Ground
at30C
InAirat
40C
InDu
ctat
30
C
InGround
at30C
InAirat
40C
mm
mm
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Am
ps.
Amps.
Amps.
TABLE6
:12.7
/22kV,
SINGLECO
RE,
XLPEINSULATEDANDPVCSHEATHED,
SCREEN
ED,
UNARMOUREDCABL
ES.
(A2XY/2XY)
5050
2.0
27
681
0.8
221
0.1
394
0.1
65
120
135
170
27
973
0.4
937
0.1
386
0.1
66
150
175
215
7070
2.0
29
786
0.5
683
0.1
291
0.1
86
145
165
210
29
1204
0.3
421
0.1
291
0.1
86
185
210
270
9595
2.2
31
933
0.4
106
0.1
233
0.2
06
170
195
255
31
1513
0.2
466
0.1
233
0.2
06
220
255
330
120
120
2.2
32
1036
0.3
248
0.1
185
0.2
22
195
225
295
32
1778
0.1
958
0.1
171
0.2
26
250
290
380
150
150
2.2
33
1150
0.2
647
0.1
139
0.2
39
215
250
330
34
2058
0.1
590
0.1
152
0.2
40
280
320
430
185
185
2.2
35
1298
0.2
110
0.1
097
0.2
59
245
280
380
35
2434
0.1
276
0.1
089
0.2
61
315
360
490
240
240
2.2
37
1510
0.1
613
0.1
052
0.2
84
280
325
450
37
2960
0.0
979
0.1
045
0.2
87
365
420
580
300
300
2.2
39
1721
0.1
296
0.1
024
0.3
06
320
370
520
40
3605
0.0
789
0.1
023
0.3
13
410
470
660
400
400
2.4
43
2088
0.1
016
0.0
982
0.3
46
360
420
610
43
4474
0.0
629
0.0
979
0.3
47
460
530
770
500
500
2.6
47
2553
0.0
800
0.0
959
0.3
88
410
480
710
47
5616
0.0
505
0.0
957
0.3
89
520
600
890
630
630
2.6
50
3027
0.0
634
0.0
926
0.4
29
470
550
820
51
6998
0.0
410
0.0
932
0.4
32
580
680
1020
800
800
2.8
55
3665
0.0
513
0.0
907
0.4
75
520
610
950
-
-
-
-
-
-
-
-
1000
1000
3.0
59
4409
0.0
427
0.0
877
0.5
24
580
680
1080
-
-
-
-
-
-
-
-
TABLE7
:19/33kV,
SINGLECOR
E,
XLPEINSULATEDAND
PVCSHEATHED,
SCREENE
D,
UNARMOUREDCABLES.
(A2XY/2XY)
9595
2.2
36
1220
0.4
106
0.1
327
0.1
58
170
195
255
36
1800
0.2
466
0.1
327
0.1
58
220
255
330
120
120
2.2
38
1334
0.3
248
0.1
293
0.1
69
195
225
295
38
2078
0.1
957
0.1
279
0.1
71
250
290
380
150
150
2.2
39
1458
0.2
646
0.1
244
0.1
81
215
250
330
39
2367
0.1
589
0.1
238
0.1
82
280
320
430
185
185
2.4
41
1658
0.2
109
0.1
197
0.1
95
245
280
380
41
2795
0.1
274
0.1
189
0.1
96
315
360
490
240
240
2.4
43
1889
0.1
612
0.1
147
0.2
12
280
325
450
44
3341
0.0
976
0.1
154
0.2
14
365
420
580
300
300
2.6
46
2158
0.1
294
0.1
128
0.2
27
320
370
520
46
4048
0.0
786
0.1
111
0.2
32
410
470
660
400
400
2.6
49
2519
0.1
014
0.1
064
0.2
55
360
420
610
49
4906
0.0
625
0.1
061
0.2
56
460
530
770
500
500
2.8
53
3020
0.0
797
0.1
035
0.2
84
410
480
710
53
6084
0.0
501
0.1
033
0.2
85
520
600
890
630
630
2.8
56
3525
0.0
630
0.0
998
0.3
12
470
550
820
57
7499
0.0
404
0.1
002
0.3
14
580
680
1020
800
800
3.0
61
4204
0.0
508
0.0
972
0.3
44
520
610
950
-
-
-
-
-
-
-
-
1000
1000
3.2
65
4990
0.0
421
0.0
938
0.3
77
580
680
1080
-
-
-
-
-
-
-
-
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13
Nominal
Areaof
Conductor
Nominal
Thickness
of
O/Sheath
Aluminium
-A2XFY(P)
Copper-2XFY(P)
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
InDuctat
30C
In
Ground
at30C
InAirat
40C
InDu
ctat
30
C
InGround
at30C
InAirat
40C
mm
mm
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Am
ps.
Amps.
Amps.
TABLE1
4:
3.3
KV,
THREECORE
,XLPEINSULATED,
FLATSTRIPARMOUREDANDP
VCSHEATHED,
UNSCREENEDCABLES.
(A2XFY(P)/2XFY(P))
3535
1.5
6
31
1179
1.1
132
0.0
965
0.2
63
94
115
120
31
1811
0.6
684
0.0
965
0.2
63
120
145
155
5050
1.5
6
33
1349
0.8
222
0.0
926
0.2
96
110
135
145
33
2205
0.4
938
0.0
926
0.2
96
145
170
190
7070
1.5
6
36
1628
0.5
684
0.0
859
0.3
41
140
165
185
36
2864
0.3
423
0.0
859
0.3
41
175
210
235
9595
1.7
2
40
2008
0.4
108
0.0
829
0.3
89
165
195
225
40
3726
0.2
469
0.0
829
0.3
89
210
250
290
120
120
1.7
2
42
2306
0.3
251
0.0
808
0.4
27
185
220
255
42
4474
0.1
962
0.0
808
0.4
27
240
285
330
150
150
1.8
8
45
2664
0.2
650
0.0
792
0.4
66
210
245
295
45
5340
0.1
595
0.0
792
0.4
66
270
315
375
185
185
2.0
4
48
3119
0.2
114
0.0
768
0.5
12
235
280
340
48
6463
0.1
282
0.0
768
0.5
12
300
355
435
240
240
2.2
0
53
3827
0.1
618
0.0
750
0.5
74
270
320
400
53
8229
0.0
986
0.0
750
0.5
74
350
410
510
300
300
2.2
0
57
4475
0.1
302
0.0
736
0.6
35
305
360
460
57
10004
0.0
798
0.0
736
0.6
35
390
460
590
400
400
2.5
2
63
5445
0.1
023
0.0
719
0.7
04
350
410
535
63
12500
0.0
640
0.0
719
0.7
04
440
520
670
TABLE1
5:3.8
/6.6
KV,
THREECO
RE,
XLPEINSULATED,
FL
ATSTRIPARMOUREDAN
DPVCSHEATHED,
SCREE
NEDCABLES.
(A2XFY(P)/2XFY(P))
5050
1.7
2
42
2140
0.8
221
0.1
079
0.2
90
115
130
150
42
3020
0.4
938
0.1
075
0.2
92
150
170
195
7070
1.8
8
46
2570
0.5
684
0.0
994
0.3
32
140
160
190
46
3840
0.3
423
0.0
994
0.3
32
180
210
240
9595
1.8
8
50
3030
0.4
108
0.0
951
0.3
75
165
190
230
50
4790
0.2
470
0.0
951
0.3
75
215
250
295
120
120
2.0
4
53
3420
0.3
251
0.0
924
0.4
08
190
220
260
53
5770
0.1
962
0.0
918
0.4
15
240
280
335
150
150
2.2
0
56
3930
0.2
650
0.0
900
0.4
43
210
245
295
56
6710
0.1
596
0.0
897
0.4
47
270
310
380
185
185
2.2
0
60
4490
0.2
115
0.0
867
0.4
85
240
275
335
60
7930
0.1
283
0.0
864
0.4
90
305
350
430
240
240
2.3
6
65
5380
0.1
619
0.0
841
0.5
39
275
315
395
66
9860
0.0
988
0.0
839
0.5
44
350
400
500
300
300
2.5
2
70
6330
0.1
303
0.0
833
0.5
50
310
355
450
71
12120
0.0
800
0.0
827
0.5
63
390
445
570
400
400
2.8
4
80
7950
0.1
025
0.0
812
0.5
78
350
400
520
80
15200
0.0
643
0.0
812
0.5
80
440
500
650
-
7/27/2019 HT XLPE Cables Catalogue.pdf
16/32
14
HVCABLESTECHNICALCATALOGUENominal
Areaof
Conductor
Nominal
Thickness
of
O/Sheath
Aluminium
-A2XFY(P)
Copper-2XFY(P)
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
InDuctat
30C
In
Ground
at30C
InAirat
40C
InDu
ctat
30
C
InGround
at30C
InAirat
40C
mm
mm
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Am
ps.
Amps.
Amps.
TABLE1
6:
6.3
5/11kV,
THREEC
ORE,
XLPEINSULATED,F
LATSTRIPARMOUREDANDPVCSHEATHED,
SCRE
ENEDCABLES
(A2XFY(
P)/2XFY(P))
5050
1.8
8
46
2460
0.8
221
0.1
140
0.2
38
115
130
150
46
3340
0.4
938
0.1
136
0.2
40
150
170
195
7070
1.8
8
49
2890
0.5
684
0.1
050
0.2
72
140
160
190
49
4160
0.3
422
0.1
050
0.2
72
180
210
240
9595
2.0
4
53
3430
0.4
108
0.1
002
0.3
05
165
190
230
53
5200
0.2
469
0.1
002
0.3
05
215
250
295
120
120
2.2
0
56
3850
0.3
250
0.0
972
0.3
31
190
220
260
57
6100
0.1
961
0.0
966
0.3
37
240
280
335
150
150
2.2
0
60
4290
0.2
650
0.0
945
0.3
58
210
245
295
60
7050
0.1
595
0.0
942
0.3
61
270
310
380
185
185
2.3
6
64
5020
0.2
114
0.0
909
0.3
91
240
275
335
64
8460
0.1
282
0.0
906
0.3
95
305
350
430
240
240
2.5
2
69
5890
0.1
618
0.0
880
0.4
33
275
315
395
69
10290
0.0
986
0.0
878
0.4
37
350
400
500
300
300
2.6
8
73
6780
0.1
302
0.0
859
0.4
69
310
355
450
74
12500
0.0
798
0.0
854
0.4
80
390
445
570
400
400
2.8
4
81
8140
0.1
024
0.0
824
0.5
35
350
400
520
81
15390
0.0
642
0.0
824
0.5
37
440
500
650
TABLE1
7:1
1/11kV,
THREECORE,
XLPEINSULATED,
FLA
TSTRIPARMOUREDAND
PVCSHEATHED,
SCREEN
EDCABLES
(A2XFY(
P)/2XFY(P))
5050
2.2
0
55
3300
0.8
221
0.1
267
0.1
75
115
130
150
55
4190
0.4
937
0.1
262
0.1
77
150
170
195
7070
2.2
0
58
3810
0.5
683
0.1
166
0.1
98
140
160
190
58
5080
0.3
421
0.1
166
0.1
98
180
210
240
9595
2.3
6
62
4300
0.4
107
0.1
109
0.2
20
165
190
230
62
6070
0.2
467
0.1
109
0.2
20
215
250
295
120
120
2.3
6
65
4830
0.3
249
0.1
074
0.2
37
190
220
260
66
7130
0.1
960
0.1
066
0.2
41
240
280
335
150
150
2.5
2
69
5420
0.2
648
0.1
041
0.2
55
210
245
295
69
8180
0.1
592
0.1
038
0.2
57
270
310
380
185
185
2.6
8
73
6030
0.2
112
0.0
999
0.2
77
240
275
335
73
9600
0.1
279
0.0
995
0.2
80
305
350
430
240
240
2.8
4
78
7070
0.1
616
0.0
963
0.3
05
275
315
395
78
11500
0.0
982
0.0
960
0.3
07
350
400
500
300
300
3.0
0
82
7970
0.1
299
0.0
938
0.3
28
310
355
450
84
13840
0.0
794
0.0
931
0.3
36
390
445
570
400
400
3.0
0
90
9480
0.1
020
0.0
895
0.3
72
350
400
520
90
16730
0.0
636
0.0
894
0.3
73
440
500
650
-
7/27/2019 HT XLPE Cables Catalogue.pdf
17/32
15
Nominal
Areaof
Conductor
Nominal
Thickness
of
O/Sheath
Aluminium
-A2XFY(P)
Copper-2XFY(P)
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weightof
cable
Approx.
A.C.
Resistance
at90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
ContinuousCurrentRating
InDuctat
30C
In
Ground
at30C
InAirat
40C
InDu
ctat
30
C
InGround
at30C
InAirat
40C
mm
mm
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
ohm/km
ohm/km
MicroFarad/
km
Am
ps.
Amps.
Amps.
TABLE1
8:1
2.7
/22kV,
THREECORE,
XLPEINSULATED,FL
ATSTRIPARMOUREDAN
DPVCSHEATHED,
SCREE
NEDCABLES.
(A2XFY(
P)/2XFY(P))
5050
2.2
0
57
3510
0.8
221
0.1
296
0.1
65
115
130
155
57
4400
0.4
937
0.1
291
0.1
66
150
170
200
7070
2.3
6
61
4060
0.5
683
0.1
193
0.1
86
140
160
190
61
5320
0.3
421
0.1
193
0.1
86
180
205
245
9595
2.3
6
65
4640
0.4
107
0.1
135
0.2
06
170
190
230
65
6410
0.2
467
0.1
135
0.2
06
215
245
300
120
120
2.5
2
68
5110
0.3
249
0.1
098
0.2
22
190
215
265
69
7480
0.1
959
0.1
090
0.2
26
245
275
340
150
150
2.6
8
71
5700
0.2
648
0.1
064
0.2
39
215
240
300
72
8460
0.1
592
0.1
061
0.2
40
275
305
385
185
185
2.6
8
75
6340
0.2
112
0.1
021
0.2
59
240
270
340
75
9850
0.1
278
0.1
017
0.2
61
305
345
435
240
240
2.8
4
80
7300
0.1
615
0.0
984
0.2
84
275
310
400
80
11770
0.0
982
0.0
980
0.2
87
350
395
510
300
300
3.0
0
85
8320
0.1
298
0.0
957
0.3
06
310
350
455
86
14120
0.0
793
0.0
950
0.3
13
390
440
580
400
400
3.0
0
92
9870
0.1
020
0.0
912
0.3
46
355
395
530
92
17120
0.0
635
0.0
911
0.3
47
440
495
660
TABLE1
9:1
9/33kV,
THREECORE,
XLPEINSULATED,
FLA
TSTRIPARMOUREDAND
PVCSHEATHED,
SCREEN
EDCABLES.
(A2XFY(
P)/2XFY(P))
9595
2.8
4
78
6360
0.4
106
0.1
262
0.1
58
170
190
230
78
8120
0.2
466
0.1
262
0.1
58
215
245
300
120
120
2.8
4
81
6820
0.3
248
0.1
219
0.1
69
190
215
265
81
9110
0.1
958
0.1
210
0.1
71
245
275
340
150
150
3.0
0
84
7530
0.2
647
0.1
180
0.1
81
215
240
300
85
10290
0.1
590
0.1
176
0.1
82
275
305
385
185
185
3.0
0
88
8280
0.2
110
0.1
130
0.1
95
240
270
340
88
11730
0.1
276
0.1
126
0.1
96
305
345
435
240
240
3.0
0
93
9260
0.1
613
0.1
086
0.2
12
275
310
400
93
13700
0.0
978
0.1
083
0.2
14
350
395
510
300
300
3.0
0
97
10250
0.1
296
0.1
055
0.2
27
310
350
455
98
16020
0.0
789
0.1
046
0.2
32
390
440
580
400
400
3.0
0
104
11790
0.1
016
0.1
002
0.2
55
355
395
530
104
19040
0.0
629
0.1
001
0.2
56
440
495
660
-
7/27/2019 HT XLPE Cables Catalogue.pdf
18/32
16
HVCABLESTECHNICALCATALOGUENominal
Areaof
Conductor
N
ominal
Dia.
Of
A
rmour
Wire
Minimum
Thickness
ofO/
Sheath
Aluminium
-A2XWY(P)
Copper-2XWY(P)
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Ap
prox.
A.C.
Resistance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
Continu
ousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Approx.
A.C.
Res
istance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitace
perphase
ContinuousCurrentRating
InDuct
at
30C
In
Ground
at30C
InAirat
40C
InDuctat
30C
InGroundat
30C
InAirat
40C
mm
mm
mm
mm
kg/km
oh
m/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
oh
m/km
ohm/km
Micro
Farad/km
Amps.
Amps.
Amps.
TABLE2
0:
3.3
kV,
THREECORE,
XLPEINSULATED,
ROUND
WIREARMOUREDANDP
VCSHEATHED,
UNSCREE
NEDCABLES.
(A2XWY(P)/2XWY(P))
3535
1.6
1.5
6
32
1540
1.1132
0.0
965
0.2
63
94
115
120
32
2170
0.6684
0.0
881
0.2
63
120
145
155
5050
2
1.5
6
35
1980
0.8222
0.0
926
0.2
96
110
135
145
35
2840
0.4939
0.0
837
0.2
96
145
170
190
7070
2
1.5
6
38
2320
0.5684
0.0
859
0.3
41
140
165
185
38
3560
0.3424
0.0
764
0.3
41
175
210
235
9595
2
1.7
2
42
2760
0.4109
0.0
829
0.3
89
165
195
225
42
4480
0.2471
0.0
728
0.3
89
210
250
290
120
120
2
1.8
8
44
3150
0.3252
0.0
808
0.4
27
185
220
255
44
5320
0.1966
0.0
682
0.4
27
240
285
330
150
150
2.5
2.0
4
48
3920
0.2651
0.0
792
0.4
66
210
245
295
48
6600
0.1600
0.0
662
0.4
66
270
315
375
185
185
2.5
2.0
4
51
4450
0.2116
0.0
768
0.5
12
235
280
340
51
7800
0.1289
0.0
634
0.5
12
300
355
435
240
240
2.5
2.2
0
56
5300
0.1620
0.0
750
0.5
74
270
320
400
56
9700
0.0996
0.0
612
0.5
74
350
410
510
300
300
2.5
2.3
6
61
6130
0.1305
0.0
736
0.6
35
305
360
460
61
11660
0.0811
0.0
595
0.6
35
390
460
590
400
400
3.1
5
2.6
8
68
8000
0.1028
0.0
719
0.7
04
350
410
535
68
15060
0.0657
0.0
574
0.7
04
440
520
670
TABLE2
1:
3.8
/6.6
kV,
THREECO
RE,
XLPEINSULATED,
RO
UNDWIREARMOUREDANDPVCSHEATHED,
SCREENEDCABLES.
(A2XWY(P)/2XWY(P))
5050
2
1.8
8
44
2960
0.8221
0.1
079
0.2
90
115
130
150
44
3840
0.4938
0.1
075
0.2
92
150
170
195
7070
2
1.8
8
48
3420
0.5684
0.0
994
0.3
32
140
160
190
48
4690
0.3423
0.0
994
0.3
32
180
210
240
9595
2.5
2.0
4
53
4410
0.4108
0.0
951
0.3
75
165
190
230
53
6170
0.2470
0.0
951
0.3
75
215
250
295
120
120
2.5
2.2
0
56
4920
0.3251
0.0
924
0.4
08
190
220
260
57
7240
0.1962
0.0
918
0.4
15
240
280
335
150
150
2.5
2.2
0
59
5470
0.2650
0.0
900
0.4
43
210
245
295
59
8220
0.1596
0.0
897
0.4
47
270
310
380
185
185
2.5
2.3
6
63
6170
0.2115
0.0
867
0.4
85
240
275
335
63
9650
0.1283
0.0
864
0.4
90
305
350
430
240
240
3.1
5
2.5
2
70
7920
0.1619
0.0
841
0.5
39
275
315
395
70
12430
0.0988
0.0
839
0.5
44
350
400
500
300
300
3.1
5
2.6
8
75
9100
0.1303
0.0
833
0.5
50
310
355
450
76
14930
0.0800
0.0
827
0.5
63
390
445
570
400
400
4
3.0
0
86
12290
0.1025
0.0
812
0.5
78
350
400
520
86
19540
0.0643
0.0
812
0.5
80
440
500
650
-
7/27/2019 HT XLPE Cables Catalogue.pdf
19/32
17
Nominal
Areaof
Conductor
N
ominal
Dia.
Of
A
rmour
Wire
Minimum
Thickness
ofO/
Sheath
Aluminium
-A2XWY(P)
Copper-2XWY(P)
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Ap
prox.
A.C.
Resistance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
Continu
ousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Approx.
A.C.
Res
istance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitace
perphase
ContinuousCurrentRating
InDuct
at
30C
In
Ground
at30C
InAirat
40C
InDuctat
30C
InGroundat
30C
InAirat
40C
mm
mm
mm
mm
kg/km
oh
m/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
oh
m/km
ohm/km
Micro
Farad/km
Amps.
Amps.
Amps.
TABLE2
2:
6.3
5/11kV,
THREECORE,
XLPEINSULATED,R
OUNDWIREARMOUREDA
NDPVCSHEATHED,
SCREENEDCABLES.
(A2XWY(P)/2XWY(P))
5050
2.5
2.0
4
49
3720
0.8221
0.1
140
0.2
38
115
130
150
49
4610
0.4938
0.1
136
0.2
40
150
170
195
7070
2.5
2.0
4
53
4270
0.5684
0.1
050
0.2
72
140
160
190
53
5540
0.3422
0.1
050
0.2
72
180
210
240
9595
2.5
2.2
0
57
4910
0.4108
0.1
002
0.3
05
165
190
230
57
6680
0.2469
0.1
002
0.3
05
215
250
295
120
120
2.5
2.2
0
59
5400
0.3250
0.0
972
0.3
31
190
220
260
60
7650
0.1961
0.0
966
0.3
37
240
280
335
150
150
2.5
2.3
6
63
5970
0.2650
0.0
945
0.3
58
210
245
295
63
8730
0.1595
0.0
942
0.3
61
270
310
380
185
185
3.1
5
2.5
2
69
7490
0.2114
0.0
909
0.3
91
240
275
335
69
11000
0.1282
0.0
906
0.3
95
305
350
430
240
240
3.1
5
2.6
8
74
8620
0.1618
0.0
880
0.4
33
275
315
395
74
13020
0.0986
0.0
878
0.4
37
350
400
500
300
300
3.1
5
2.8
4
78
9650
0.1302
0.0
859
0.4
69
310
355
450
79
15430
0.0798
0.0
854
0.4
80
390
445
570
400
400
4
3.0
0
88
12570
0.1024
0.0
824
0.5
35
350
400
520
88
19820
0.0642
0.0
824
0.5
37
440
500
650
TABLE2
3:
11/11kV,
THREECOR
E,
XLPEINSULATED,
ROU
NDWIREARMOUREDAN
DPVCSHEATHED,
SCREE
NEDCABLES.
(A2XWY(P)/2XWY(P))
5050
2.5
2.2
0
58
4780
0.8221
0.1
267
0.1
75
115
130
150
58
5700
0.4937
0.1
262
0.1
77
150
170
195
7070
2.5
2.3
6
62
5470
0.5683
0.1
166
0.1
98
140
160
190
62
6740
0.3421
0.1
166
0.1
98
180
210
240
9595
3.1
5
2.5
2
67
6750
0.4107
0.1
109
0.2
20
165
190
230
67
8520
0.2467
0.1
109
0.2
20
215
250
295
120
120
3.1
5
2.5
2
70
7410
0.3249
0.1
074
0.2
37
190
220
260
71
9710
0.1960
0.1
066
0.2
41
240
280
335
150
150
3.1
5
2.6
8
73
8080
0.2648
0.1
041
0.2
55
210
245
295
74
10910
0.1592
0.1
038
0.2
57
270
310
380
185
185
3.1
5
2.8
4
77
8910
0.2112
0.0
999
0.2
77
240
275
335
78
12470
0.1279
0.0
995
0.2
80
305
350
430
240
240
3.1
5
3.0
0
83
10210
0.1616
0.0
963
0.3
05
275
315
395
83
14680
0.0982
0.0
960
0.3
07
350
400
500
300
300
4
3.0
0
88
12280
0.1299
0.0
938
0.3
28
310
355
450
90
18240
0.0794
0.0
931
0.3
36
390
445
570
400
400
4
3.0
0
96
14300
0.1020
0.0
895
0.3
72
350
400
520
96
21550
0.0636
0.0
894
0.3
73
440
500
650
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18
HVCABLESTECHNICALCATALOGUENominal
Areaof
Conductor
N
ominal
Dia.
Of
A
rmour
Wire
Minimum
Thickness
ofO/
Sheath
Aluminium
-A2XWY(P)
Copper-2XWY(P)
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Ap
prox.
A.C.
Resistance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitance
perphase
Continu
ousCurrentRating
Approx.
overall
dia.of
cable
Approx.
weight
ofcable
Approx.
A.C.
Res
istance
at
90C
Approx.
Reactance
at50Hz
Approx.
Capacitace
perphase
ContinuousCurrentRating
InDuct
at
30C
In
Ground
at30C
InAirat
40C
InDuctat
30C
InGroundat
30C
InAirat
40C
mm
mm
mm
mm
kg/km
oh
m/km
ohm/km
MicroFarad/
km
Amps.
Amps.
Amps.
mm
kg/km
oh
m/km
ohm/km
Micro
Farad/km
Amps.
Amps.
Amps.
TABLE2
4:
12.7
/22kV,
THREEC
ORE,
XLPEINSULATED,R
OUNDWIREARMOUREDA
NDPVCSHEATHED,
SCREENEDCABLES.
(A2XWY(P)/2XWY(P))
5050
2.5
2.3
6
60
5110
0.8221
0.1
296
0.1
65
115
130
155
60
6000
0.4937
0.1
291
0.1
66
150
170
200
7070
2.5
2.3
6
64
5730
0.5683
0.1
193
0.1
86
140
160
190
64
7000
0.3421
0.1
193
0.1
86
180
205
245
9595
3.1
5
2.5
2
69
7180
0.4107
0.1
135
0.2
06
170
190
230
69
8940
0.2467
0.1
135
0.2
06
215
245
300
120
120
3.1
5
2.6
8
73
7790
0.3249
0.1
098
0.2
22
190
215
265
73
10150
0.1959
0.1
090
0.2
26
245
275
340
150
150
3.1
5
2.6
8
76
8420
0.2648
0.1
064
0.2
39
215
240
300
76
11250
0.1592
0.1
061
0.2
40
275
305
385
185
185
3.1
5
2.8
4
80
9310
0.2112
0.1
021
0.2
59
240
270
340
80
12820
0.1278
0.1
017
0.2
61
305
345
435
240
240
4
3.0
0
87
11650
0.1615
0.0
984
0.2
84
275
310
400
87
16120
0.0982
0.0
980
0.2
87
350
395
510
300
300
4
3.0
0
91
12800
0.1298
0.0
957
0.3
06
310
350
455
92
18700
0.0793
0.0
950
0.3
13
390
440
580
400
400
4
3.0
0
98
14750
0.1020
0.0
912
0.3
46
355
395
530
98
22000
0.0635
0.0
911
0.3
47
440
495
660
TABLE2
5:
19/33kV,
THREECO
RE,
XLPEINSULATED,
ROUNDWIREARMOUREDAN
DPVCSHEATHED,
SCREENEDCABLES.
(A2XWY(P)/2XWY(P))
9595
3.1
5
3.0
0
83
9500
0.4106
0.1
262
0.1
58
170
190
230
83
11260
0.2466
0.1
262
0.1
58
215
245
300
120
120
4
3.0
0
87
11280
0.3248
0.1
219
0.1
69
190
215
265
88
13540
0.1958
0.1
210
0.1
71
245
275
340
150
150
4
3.0
0
90
12000
0.2647
0.1
180
0.1
81
215
240
300
91
14760
0.1590
0.1
176
0.1
82
275
305
385
185
185
4
3.0
0
94
13010
0.2110
0.1
130
0.1
95
240
270
340
94
16470
0.1276
0.1
126
0.1
96
305
345
435
240
240
4
3.0
0
99
14250
0.1613
0.1
086
0.2
12
275
310
400
99
18660
0.0978
0.1
083
0.2
14
350
395
510
300
300
4
3.0
0
103
15480
0.1296
0.1
055
0.2
27
310
350
455
104
21330
0.0789
0.1
046
0.2
32
390
440
580
400
400
4
3.0
0
110
17420
0.1016
0.1
002
0.2
55
355
395
530
110
24680
0.0629
0.1
001
0.2
56
440
495
660
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19
1) Continuous current carrying capacity is an important
factor for the selection of the optimum size of conductor
in a cable. The current ratings given in Tables 2 to 25 are
on the following standard installation conditions:
1. Maximum Conductor Temprature 90C
2. Thermal Resistivity of Soil 1.5 K.m/W
3. Ground Temprature 30C
4. Ambient Air Temprature 40C
5. Depth of Laying - to the highest point of cableslaid direct or to top surface of ducts, is taken to beas follows:
a) 3.3, 6.6 and 11 kV cables 900 mm
b) 22 and 33 kV cables 1050 mm
6. Method of Installation :
a) Single core cables: Three core cablesin trefoil touching
b) Three core cables Installed single
2) Short Circuir Rating
The conductor size in a cable for an installation is also
governed by its ability to carry short circuit current of
the system.
Short circuit rating are based on the assumption that the
duration of short circuit is so small and apparently there
is no transmission of heat, produced during short circuit,
through the insulation and the whole of it is absorbed bythe conductor.
The short circuit current ratings (r.m.s. values) of XLPE
insulated cables with aluminium / copper conductors for
one second duration are given in table 1. These ratings
have been calculated on the following assumptions.
Parametres Aluminium Copper
1. Conductor temprature
prior to short circuit
90C 90C
2. Maximum permissibleconductor tempratureduring short circuit
250C 250C
3. Specific gravity ofaluminium
2.703 8.89
4. Resistivity of aluminiumat 20 C (ohm/km/mm)
28.264 17.24
5. Temprature coefficientof resistance at 20
0.00403/C 0.0039/C
With the above assumptions, the maximum short circuitcurrent is calculated with the following formula.
Ishk x A
t(kA)
Where Ish = r.m.s. value of short circuit current (kA)
k = a constant (Aluminium-0.094, Copper-0.143)
A = nominal area of conductor ( mm )
t = duration of short circuit (sec)
3) Combinations of duct and cable dimensions
assumed are shown below.Duct Dimesions corresponding to cable diametre
Overall Cable Diameter Inside DuctDiameter
OutsideDuct
Diameter
mm mm mm
Up to and including 65 100 130
Above 65 and including 90 125 160
Above 90 and including 115 150 190
4) Rating FactorsIn actual practice, conditions of installation may be
different from the standard installation conditions given
above. Hence to determine the continuous current rating
for the actual conditions, the tabulated current ratings
should be multiplied by the appropriate ratings factors or
factors given in Tables 26 to 40-c.
a) Cable Laid Direct in the Ground ReferTable No.
i) For Depth of laying 26
ii) For variation in groundtemprature
27
iii) For variation in thermal resistivityof soil
28 and 29
iv) For group rating factors 30 and 31
b) Cables Installed in Ducts ReferTable No.
i) For depth of laying 32
ii) For variation in groundtemprature
33
iii) For variation in thermal resistivityof Soil 34 and 35
iv) For group rating factors 36 and 37
c) Cables Installed in AirRefer
Table No.
i) For variation in ambient airtemprature
38
d) Group RatingRefer
Table No.
i) Group Rating factors for cables
laid in Trays/ Racks(1core & 3 core)
39-A to
40-c
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20
HVCABLESTECHNICALCATALOGUETABLE
26
Ratingfactorsfordepthoflayingofcableslaiddirectin
theground
DepthofLaying(mm)
3.3,6.6
And11kVCables
22And33kVCables
900
1.0
0
-
1050
0.9
9
1.0
0
1200
0.9
7
0.9
9
1500
0.9
5
0.9
7
1800
0.9
4
0.9
5
2000
0.9
3
0.9
4
2500
0.9
1
0.9
2
3000orMore
0.9
0.9
1
TABLE
27
Ratingfactorsforvariationingroundtemperatureforcableslaiddirectintheground
GroundTemperatureDeg.C
15
20
25
30
35
40
45
50
RatingFactor
(maximumc
onductortemperature90Deg.C
)
1.1
2
1.0
8
1.0
4
1.0
0
0.9
6
0.9
1
0.8
7
0.8
2
TABLE
28
Ratingfactorsforvariationinthermalresistivityofsoilforthreesinglecorecableslaid
directinthe
ground
Nomina
lAreaof
Conductormm2
ValueofThermalResistivityofSo
ilK.m
/W
1.0
1.2
0
1.5
0
2.0
0
2.5
0
3.0
252
5
1.1
7
1.0
9
1.0
0
0.8
8
0.8
0.7
4
353
5
1.1
8
1.1
1.0
0
0.8
8
0.8
0.7
4
505
0
1.1
9
1.1
1.0
0
0.8
8
0.8
0.7
3
707
0
1.1
9
1.1
1.0
0
0.8
8
0.8
0.7
3
959
5
1.1
9
1.1
1.0
0
0.8
8
0.7
9
0.7
3
120
1
20
1.1
9
1.1
1.0
0
0.8
8
0.7
9
0.7
3
150
1
50
1.1
9
1.1
1.0
0
0.8
8
0.7
9
0.7
3
185
1
85
1.1
9
1.1
1.0
0
0.8
8
0.7
9
0.7
2
240
2
40
1.2
1.1
1
1.0
0
0.8
8
0.7
9
0.7
2
300
3
00
1.2
1.1
1
1.0
0
0.8
7
0.7
9
0.7
2
400
4
00
1.2
1.1
1
1.0
0
0.8
7
0.7
9
0.7
2
500
5
00
1.2
1.1
1
1.0
0
0.8
7
0.7
9
0.7
2
630
6
30
1.2
1
1.1
1
1.0
0
0.8
7
0.7
8
0.7
2
800
8
00
1.2
1
1.1
1
1.0
0
0.8
7
0.7
8
0.7
2
1000
10
00
1.2
1
1.1
1
1.0
0
0.8
7
0.7
8
0.7
2
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21
TABLE
29
Ratingfactorsforvariationinthermalresistivityofsoil
forthreecorecableslaiddirectinthegroun
d
NominalAre
aofConductormm2
ValueofThermalResistivity
ofSoilK.m
/W
1.0
1.2
0
1.5
0
2.0
0
2.5
0
3.0
2525
1.1
6
1.0
8
1.0
0
0.9
0.8
2
0.75
3535
1.1
6
1.0
8
1.0
0
0.9
0.8
1
0.75
5050
1.1
6
1.0
8
1.0
0
0.8
9
0.8
1
0.75
7070
1.1
6
1.0
9
1.0
0
0.8
9
0.8
1
0.75
9595
1.1
6
1.0
9
1.0
0
0.8
9
0.8
1
0.75
120
120
1.1
6
1.0
9
1.0
0
0.8
9
0.8
1
0.75
150
150
1.1
6
1.0
9
1.0
0
0.8
9
0.8
1
0.75
185
185
1.1
6
1.0
9
1.0
0
0.8
9
0.8
1
0.75
240
240
1.1
7
1.0
9
1.0
0
0.8
9
0.8
1
0.75
300
300
1.1
7
1.0
9
1.0
0
0.8
9
0.8
1
0.75
400
400
1.1
7
1.0
9
1.0
0
0.8
9
0.8
1
0.75
500
500
1.1
7
1.0
9
1.0
0
0.8
9
0.8
1
0.74
TABLE
30
Groupratingfactorsforcircuitsofthreesingle-corecablesintrefoillaiddirectintheground
NumberofCablesInGroup
SpacingBetweenTrefoilGroupCentres,mm
TOUCHING
200
400
600
800
22
0.7
6
0.8
3
0.8
7
0.9
0.92
33
0.6
4
0.7
2
0.7
9
0.8
3
0.86
44
0.5
8
0.6
7
0.7
5
0.8
0.84
55
0.5
3
0.6
3
0.7
1
0.7
7
0.81
66
0.5
0.6
0.6
9
0.7
6
0.8
77
0.4
7
0.5
8
0.6
7
0.7
4
0.79
88
0.4
5
0.5
6
0.6
6
0.7
3
-
99
0.4
3
0.5
5
0.6
5
0.7
3
-
1010
0.4
2
0.5
4
0.6
4
-
-
1111
0.4
1
0.5
3
0.6
4
-
-
1212
0.4
0
0.5
2
0.6
3
-
-
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22
HVCABLESTECHNICALCATALOGUETABLE
31
Groupratingfactorsforthreecorecablesinhorizontalf
ormationlaiddirectintheground.
NumberofC
ablesInGroup
SpacingBetweenTrefoilGroupCe
ntres,mm
TOUCHING
200
400
600
800
22
0.7
9
0.8
6
0.9
0
0.9
2
0.9
4
33
0.6
7
0.7
7
0.8
2
0.8
6
0.8
9
44
0.6
1
0.7
2
0.7
9
0.8
3
0.8
7
55
0.5
6
0.6
8
0.7
6
0.8
1
0.8
5
66
0.5
3
0.6
5
0.7
4
0.8
0.8
4
77
0.5
0.6
3
0.7
2
0.7
8
0.8
3
88
0.4
8
0.6
1
0.7
1
0.7
8
-
99
0.4
6
0.6
0.7
0
0.7
7
-
101
0
0.4
4
0.5
9
0.6
9
-
-
111
1
0.4
3
0.5
8
0.6
9
-
-
121
2
0.4
2
0.5
7
0.6
8
-
-
TABLE
32
Ratingfactorsfordepthoflayingsingleorthreecoreca
blesinsinglewayducts.
DepthofLaying(mm)
3.3,6.6
And11kVCables
22And33kVCables
900
1.0
0
-
1050
0.9
9
1.0
0
1200
0.9
8
0.9
9
1500
0.9
6
0.9
8
1800
0.9
5
0.9
6
2000
0.9
4
0.9
5
2500
0.9
3
0.9
4
3000orMore
0.9
2
0.9
3
TABLE
33
Ratingfactorsforvariationingroundtemperatureforcablesinducts
GroundTem
perature
Deg
.C
15
20
25
30
35
40
45
50
55
60
Rating
Factor
(maximum
conductor
temperature90
Deg.C
)
1.1
2
1.0
8
1.0
4
1.0
0
0.9
6
0.9
1
0.8
7
0.8
2
0.7
6
0.7
1
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23
TABLE
34
Ratingfactorsforvariationinthermalresistivityofsoilforthreesinglecorecablesinducts
Nominala
reaofconductormm2
ValueofThermalResistivityofSoilK.m
/W
1.0
1.2
0
1.5
0
2.0
0
2.5
0
3.0
2525
1.1
1
1.0
5
1.0
0
0.9
2
0.8
5
0.8
3535
1.1
1
1.0
6
1.0
0
0.9
2
0.8
5
0.8
5050
1.1
2
1.0
6
1.0
0
0.9
2
0.8
5
0.7
9
7070
1.1
2
1.0
6
1.0
0
0.9
2
0.8
5
0.7
9
9595
1.1
2
1.0
7
1.0
0
0.9
1
0.8
4
0.7
9
120
120
1.1
2
1.0
7
1.0
0
0.9
1
0.8
4
0.7
9
150
150
1.1
2
1.0
7
1.0
0
0.9
1
0.8
4
0.7
8
185
185
1.1
3
1.0
7
1.0
0
0.9
1
0.8
4
0.7
8
240
240
1.1
3
1.0
7
1.0
0
0.9
0.8
3
0.7
8
300
300
1.1
3
1.0
7
1.0
0
0.9
0.8
3
0.7
7
400
400
1.1
4
1.0
8
1.0
0
0.9
0.8
3
0.7
7
500
500
1.1
4
1.0
8
1.0
0
0.9
0.8
3
0.7
7
630
630
1.1
4
1.0
8
1.0
0
0.9
0.8
2
0.7
6
800
800
1.1
5
1.0
8
1.0
0
0.9
0.8
2
0.7
6
1000
1000
1.1
5
1.0
8
1.0
0
0.9
0.8
2
0.7
6
TABLE
35
Ratingfactorsforvariationinthermalresistivityofsoilforthreecorecablesinsinglewayducts
Nominalareaofconductormm2
ValueofThermalResistivityofSoilK.m
/W
1.0
1.2
0
1.5
0
2.0
0
2.5
0
3.0
2525
1.0
7
1.0
4
1.0
0
0.9
3
0.8
9
0.8
4
3535
1.0
7
1.0
4
1.0
0
0.9
3
0.8
8
0.8
3
5050
1.0
7
1.0
4
1.0
0
0.9
3
0.8
8
0.8
3
7070
1.0
8
1.0
4
1.0
0
0.9
3
0.8
8
0.8
3
9595
1.0
8
1.0
5
1.0
0
0.9
3
0.8
7
0.8
3
120
120
1.0
9
1.0
5
1.0
0
0.9
3
0.8
7
0.8
3
150
150
1.0
9
1.0
5
1.0
0
0.9
3
0.8
7
0.8
3
185
185
1.0
9
1.0
5
1.0
0
0.9
3
0.8
7
0.8
2
240
240
1.0
9
1.0
5
1.0
0
0.9
3
0.8
7
0.8
2
300
300
1.0
9
1.0
5
1.0
0
0.9
2
0.8
7
0.8
2
400
400
1.1
1.0
6
1.0
0
0.9
2
0.8
7
0.8
2
500
500
1.1
1.0
6
1.0
0
0.9
2
0.8
6
0.8
1
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24
HVCABLESTECHNICALCATALOGUETABLE
36
Grouprating
factorsforcircuitsofsingle-corecablesinsingle-wayductsintrefoil
No.ofcablesinGroup
SpacingBetweenTrefoilGroupCentres,mm
TOUCHING
200
400
600
800
22
0.8
1
0.8
5
0.8
9
0.9
1
0.93
33
0.6
9
0.7
5
0.8
1
0.8
4
0.87
44
0.6
4
0.6
9
0.7
7
0.8
2
0.85
55
0.5
9
0.6
5
0.7
4
0.7
9
0.83
66
0.5
6
0.6
3
0.7
2
0.7
8
0.82
77
0.5
3
0.6
0.7
0
0.7
7
0.81
88
0.5
1
0.5
9
0.6
9
0.7
6
-
99
0.4
9
0.5
7
0.6
8
0.7
5
-
1010
0.4
8
0.5
6
0.6
7
-
-
1111
0.4
7
0.5
5
0.6
6
-
-
1212
0.4
6
0.5
4
0.6
6
-
-
TABLE
37
Grouprating
factorsforcircuitsofthree-corecablesinsingle
-wayductsinhorizontalformation.
NumberofCablesInGroup
SpacingBetweenT
refoilGroupCentres,mm
TOUCHING
200
400
600
800
22
0.8
5
0.8
9
0.9
2
0.9
4
0.9
5
33
0.7
5
0.8
1
0.8
6
0.8
9
0.9
1
44
0.7
0.7
6
0.8
3
0.8
7
0.8
9
55
0.6
5
0.7
3
0.8
0
0.8
5
0.8
8
66
0.6
2
0.7
0.7
8
0.8
4
0.8
7
77
0.5
9
0.6
8
0.7
7
0.8
2
0.8
6
88
0.5
7
0.6
7
0.7
6
0.8
2
-
99
0.5
5
0.6
5
0.7
5
0.8
1
-
1010
0.5
4
0.6
4
0.7
4
-
-
1111
0.5
2
0.6
3
0.7
4
-
-
1212
0.5
1
0.6
2
0.7
3
-
-
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25
TABLE
38
Ratingfactor
sforvariationinambientairtemperature.
AirTemperatureDeg.C
25
30
35
40
45
50
55
60
65
70
RatingFactor
(Maximum
ConductorTemperature90
Deg.C
)
1.1
6
1
.11
1.0
6
1.0
0
0.9
4
0.8
8
0.8
1
0.7
4
0.7
1
0.6
3
TABLE
39-A
Grouprating
factorsforsinglecorecableslaidonracks/traysincoveredtrenchwithremovablecoverswhereaircirculationisrestricted,trefoilsareseperatedbytwocable
diahorizonta
llyandthetraysareintierswith30cm.
Gapbetweenthem.
NumberofCablesTrays
InTier
No.ofCables
1
2
3
-
-
11
0.9
5
0.9
0.8
8
-
-
22
0.9
0.8
5
0.8
3
-
-
33
0.8
8
0.8
3
0.8
1
-
-
66
0.8
6
0.8
1
0.7
9
-
-
TABLE
39-B
Grouprating
factorsforsinglecorecableslaidonracks/traysinopenairtrenchwithoutcoverswhereaircircula
tionisnotrestricted,trefoilsareseperatedbytw
ocable
diahorizonta
llyandthetraysareintierswith30cm.
Gapbetweenthem.
NumberofCablesTrays
InTier
No.ofCables
1
2
3
-
-
11
1
0.9
8
0.9
6
-
-
22
1
0.9
5
0.9
3
-
-
33
1
0.9
4
0.9
2
-
-
66
1
0.9
3
0.9
0
-
-
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26
HVCABLESTECHNICALCATALOGUETABLE
40-A
Groupratingf
actorsforthree-corecableslaidinsideconcrete
trenchwithremovablecovers,oncabletrayswhereaircirculationisrestricted.
Thecablespacedb
yone
cablediamete
randtraysintiersby300mm.
Theclearancebetweenthewallandthecable25mm
NumberofCa
blesTraysInTier
No.ofCables
1
2
3
6
9
11
0.9
5
0.9
0.8
8
0.8
5
0.8
4
22
0.9
0.8
5
0.8
3
0.8
1
0.8
33
0.8
8
0.8
3
0.8
1
0.7
9
0.7
8
66
0.8
6
0.8
1
0.7
9
0.7
7
0.7
6
TABLE
40-B
Groupratingf
actorsforthree-corecableslaidoncabletrayse
xposedtoair,thecablespacedbyonecablediam
eterandtraysintiersby300mm.
Theclearance
betweenthew
allandthecable25mm
NumberofCa
blesTraysInTier
No.ofCables
1
2
3
6
9
11
1
0.9
8
0.9
6
0.9
3
0.9
2
22
1
0.9
5
0.9
3
0.9
0.8
9
33
1
0.9
4
0.9
2
0.8
9
0.8
8
66
1
0.9
3
0.9
0
0.8
7
0.8
6
TABLE
40-C
Groupratingf
actorsforthree-corecableslaidoncabletrayse
xposedtoair,thecablestouchingandtraysintie
rsby300mm.
Theclearancebetweenthewalla
ndthe
cable25mm
NumberofCa
blesTraysInTier
No.ofCables
1
2
3
6
9
11
1
0.8
4
0.8
0
0.7
5
0.7
3
22
1
0.8
0.7
6
0.7
1
0.6
9
33
1
0.7
8
0.7
4
0.7
0.6
8
66
1
0.7
6
0.7
2
0.6
8
0.6
6
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PROCESS FLOW
CHARTMATERIAL USED MANUFACTURING OPERATIONS
NOTE: For 3 Core 3.3 kV grade unscreened cables, activities 2,4,5 will not be applicable
1
2
3
4
5
6
7
8
9
27
CONDUCTOR STRANDINGWIRE DRAWINGALUMINIUM
SEMICONDUCTING CROSS - LINKED POLYETHYLENE CONDUCTOR SHIELDING (EXTRUSION AND VULCANIZING)
CROSS LINKED POLYETHYLENE CROSS LINKED POLYETHYLENE INSULATION (EXTRUSION AND VULCANIZING)
SEMICONDUCTING CROSS - LINKED POLYETHYLENE INSULATION SHIELDING (EXTRUSION AND VULCANIZING)
ANNEALED COPPER TAPE METALLIC SHIELDING
PLASTIC FILLERS LAYING-UP OF CORES WITH PLASTIC FILLERS
THERMOPLASTIC TAPES OR EXTRUDED
PVC/POLYTHYLENEINNER SHEATHING
GALVANISED FLAT STEEL STRIPS OR
GALVANISED ROUND STEEL WIRESARMOURING
OUTER SHEATHING
(EXTRUSION)PVC / POLYETHYLENE PACKINGTESTING
-
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HV
CABLE
STECHNICALCATALO
GUE
28
DRUM
HANDLING
1. Always stand upright
Otherwise the cable might be damaged or the cable
layers tangled making it impossible to pull out and use
the cable.
In order to prevent damage to cable drums during
transportation, observe the following six instructions:
2. Crane handling
Always use yoke to avoid damage to the drum flanges and cable.
Always use lifting bar to avoid damage to the centre hole
3. Fork lift truck handling
The forks must cover the drum entirely. Otherwise the
lagging will be destroyed and the cable will get damaged.
-
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DRUM
HANDLING
4. Lower gently on to a
level surface
5. Use blocks during unloading
Nail the blocks to the floor
6. Leave space between drums
during unloading
Enough space should be left to prevent dam-
age to cable end and drum flange
-
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