Polycab PVC
Polycab PVC
Polycab PVC
PVC INSULATED
HEAVY DUTY CABLES
1100 V.
9001:2008
14001:2004
OHSAS
18001:2007
Tel.
Fax
E-mail : enquiry@polycab.com
Website : www.polycab.com
Jan 2012
IS 1554 (Part I)
P r o d u c t
R a n g e
Contents
Introduction
3-5
Tables
6-21
Rating Factors
22-24
25
26
Handling
27-28
THE COMPANY
POLYCAB, an ISO 9001:2008, ISO
14001:2004, OHSAS 18001:2007 company
is the largest Wire & Cable manufacturer
in India with a proven track record of
over three decades. The fastest growing
company in the Indian Cable Industry
with consistent growth. Polycab group has
crossed Rs. 3600 crore turnover in the year
2010-11 and is set to achieve Rs. 4000
crore turnover in the year 201112.
From a modest beginning with Wires and
Cables, over three decades ago Polycab set
up State of Art manufacturing facilities at
Daman in 1996.The last 3 decades have
seen the core business develop along
different product lines: - Low Voltage
Cables, Medium Voltage Cables, Extra
High Voltage Cables, Fire Survival & Fire
Resistant Cables, Telecommunication
Cables, Instrumentation Cables and Aerial
Bunched Cables. In the manufacture of
cables, a competitive edge lies not so
much in product innovation as in providing
consistent quality, guaranteeing reliability
and ready availability. Polycabs Daman
factory was created to address these key
market determinants. The manufacturing
set up is sourced out from the world
renowned Machinery and Technology
suppliers with constant upgradation and
expansions.
CUSTOMER SATISFACTION
In an on going process to improve Customer
Satisfaction Polycab offers a variety of
services:
Commercially competitive prices.
Reliable & consistent quality.
Reliable & just in time delivery.
Product development for a changing
market.
A targeted stocking policy.
Technical Support for Applications/
Projects
CUSTOMER FOCUSED
POLYCAB derives its strength from its
customers. The growth of the latter is a
prerequisite to the growth of the company
Polycab Wires Pvt. Ltd. takes every precaution to ensure the information given in this publication is correct.
E & O.E. all information is subject to change without notice.
CONDUCTOR
The most acceptable metals for conductors
are copper and aluminium due to their
higher conductivity and ductility.
As copper has got higher affinity for sulphur,
it corrodes in the atmosphere where sulphur
fumes are present. In these conditions
tinned copper should be used. Aluminium
oxide film which is always present on
Aluminium conductor surface acts as barrier
and it protects the Aluminium conductor
from corrosion in fumes laden atmosphere.
CONDUCTOR CONSTRUCTION
The most economical construction for
conductor is solid conductor i.e. conductor
is made of one single wire. As the area of
conductor increase, solid conductor becomes
more stiff and hence difficult to handle. In
this case stranded construction is adopted.
Here the conductor is made of number of
strands. The strands are arranged in spiral
layers in 1+6+12+18+.. formations. This
construction provides more flexibility. Where
crimping of lugs are required, the conductor
has to be of stranded construction only.
To economise in insulating material, weight
and overall diameter, shaped conductors
are employed in bigger sized cables. Here
the stranded conductor is shaped in to a
segment of a circle so that when all the
cores are laid, they form a complete circle.
These segments are identified as 2 Core
180 degree, 3 Core 120 degree, 4 Core
90 degree and 3.5 Core 100/60 degree.
I.S. 1554 permits solid conductor
construction upto 10 sq.mm in Aluminium
and upto 6 sq.mm in copper. It permits the
use of shaped conductors for sizes from 16
sq.mm onwards.
INSULATION
The PVC covering over conductor is called
insulation and is provided by extrusion
process only. The insulated conductor is
called core.
Two Cores
Three Cores
Five Core
Six Cores
: Two adjacent cores.
Blue and Yellow
(Counting and direction core)
And remaining Grey in each
layer. OR By printing
numbers on each core.
LAYING UP
The cores are laid up with suitable lay. The
final layer always has a right hand lay i.e.
if you look along the cable, the cores move
to your right hand.
INNERSHEATH
Innersheath is provided over the laid up
cores. It is provided to give circular shape
to the cable and it provides bedding for
the armouring.
I.S. 1554 permits following two
methods of applying the innersheath
of any thermoplastic material i.e. PVC,
Polyethylene, etc.
a)
EXTRUDED INNERSHEATH: Here
the innersheath is provided by extrusion
of Thermoplastic over the laid up cores.
This type of the innersheath is generally
provided in cables having round cores i.e in
control cables and in power cables upto 10
sq.mm size. This type of the innersheath
also acts as a water barrier between cores
ARMOURING
In case of armoured cables, generally
galvanized steel wire / strip armouring is
provided over the innersheath in multicore cables and Aluminium Round Wire
or Aluminium Strip over the insulation in
single core cables. It provides mechanical
protection to inside cores and it carries
earth return current in case of a short
circuit of a core with armour.
OUTERSHEATH
CABLE CODE
The following codes are used for designating the cables as per IS-1554.
CONSTITUENT
CODE LETTER
COPPER CONDUCTOR
ALUMINIUM CONDUCTOR
PVC INSULATION
WW
FF
YWY means Copper conductor, PVC insulated, round wire armoured and PVC sheathed cable.
AYFY means Aluminium conductor, PVC insulated, steel strip armoured and PVC sheathed cable.
EXAMPLES
Current Ratings
In Duct
In Air
2 Cables
3 Cables
2 Cables
3 Cables
Amps
33
42
56
71
93
110
130
155
180
200
220
240
270
295
335
355
395
420
445
Amps
30
37
51
65
84
100
115
135
155
170
190
210
225
245
275
295
320
350
380
Amps
32
41
56
72
99
120
150
185
215
240
270
305
350
395
455
490
560
650
735
Amps
27
35
47
64
84
105
130
155
190
220
250
290
335
380
435
480
550
640
720
Current Ratings
Direct In Ground
In Duct
In Air
2 Cables
3 Cables
2 Cables
3 Cables
2 Cables
3 Cables
Amps.
21
28
36
44
54
75
97
120
145
170
205
230
265
300
335
370
410
435
485
525
570
Amps.
17
24
31
39
51
66
86
100
120
140
175
195
220
240
270
295
325
345
390
440
490
Amps.
19
25
33
42
56
71
93
110
130
155
180
200
220
240
270
295
335
355
395
420
445
Amps.
17
24
30
37
51
65
84
100
115
135
155
170
190
210
225
245
275
295
320
350
380
Amps.
18
25
32
41
56
72
99
120
150
185
215
240
270
305
350
395
455
490
560
650
735
Amps.
15
21
27
35
47
64
84
105
130
155
190
220
250
290
335
380
435
480
550
640
720
Current Ratings
In Duct
In Air
2 Cables
3 Cables
2 Cables
3 Cables
Amps.
42
54
72
92
120
140
165
200
230
255
280
305
340
370
405
430
465
Amps.
38
48
64
83
110
125
150
175
200
220
245
260
285
310
335
355
375
Amps.
43
54
72
92
125
155
190
235
275
310
345
390
445
500
570
610
680
Amps.
35
44
60
82
110
130
165
205
245
280
320
370
425
475
550
590
660
Current Ratings
Direct In Ground
In Duct
In Air
2 Cables
3 Cables
2 Cables
3 Cables
2 Cables
3 Cables
Amps.
25
35
46
57
75
94
125
150
180
220
265
300
340
380
420
465
500
540
590
Amps.
22
30
39
49
65
85
110
130
155
190
220
250
280
305
345
375
400
425
470
Amps.
23
31
42
54
72
92
120
140
165
200
230
255
280
305
340
370
405
430
465
Amps.
21
29
38
48
64
83
110
125
150
175
200
220
245
260
285
310
335
355
375
Amps.
24
32
43
54
72
92
125
155
190
235
275
310
345
390
445
500
570
610
680
Amps.
20
27
35
44
60
82
110
130
165
205
245
280
320
370
425
475
550
590
660
Nominal
Thickness of
Insulation
Nominal
Armour
Minimum
Thickness Galv. Round Galv. Flat
Thickness
of Inner
of Outer
Steel Wire Steel Strip
Sheath Nominal Dia. Nominal
Sheath
Thickness
Sq. mm
mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.4
1.24
*2.5
0.9
0.3
1.4
1.24
*4.0
1.0
0.3
1.4
1.24
*6.0
1.0
0.3
1.4
1.24
*10
1.0
0.3
1.4
1.24
16
1.0
0.3
0.8
1.40
25
1.2
0.3
0.8
1.40
35
1.2
0.3
0.8
1.40
50
1.4
0.3
0.8
1.40
70
1.4
0.3
0.8
1.56
95
1.6
0.4
0.8
1.56
120
1.6
0.4
0.8
1.56
150
1.8
0.4
0.8
1.72
185
2.0
0.5
0.8
1.88
240
2.2
0.5
0.8
2.04
300
2.4
0.6
0.8
2.20
400
2.6
0.7
0.8
2.36
500
3.0
0.7
0.8
2.68
* If required, these sizes can be offered with standard conductors also
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Current Ratings
Direct
In Ground
In Ducts
In Air
mm
12.5
13.5
15.0
16.0
18.0
18.0
20.0
21.5
24.5
28.0
31.0
33.0
37.0
40.5
45.0
50.0
56.0
62.5
Kgs./Km
320
380
450
500
600
500
650
750
950
1150
1460
1670
2010
2450
2950
3560
4500
5600
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Amps.
18
25
32
40
55
70
90
110
135
160
190
210
240
275
320
355
385
410
Amps.
16
21
27
34
45
58
76
92
115
140
170
190
210
240
275
305
345
370
Amps.
16
21
27
35
47
59
78
99
125
150
185
210
240
275
325
365
420
450
TABLE-6 POLYCAB 1.1 KV TWIN CORE, ALUMINIUM CONDUCTOR, PVC INSULATED, INNER SHEATHED,
UNARMOURED, PVC SHEATHED CABLES CONFORMING TO IS: 1554 (PART I) AMENDED UPTO DATE.
Nominal
Nominal
Nominal
Nominal
Approx.
Cross
Thickness of Thickness of Thickness of
Overall
Sectional
Insulation
Inner Sheath Outer Sheath
Diameter
Area
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
11.0
*2.5
0.9
0.3
1.8
12.0
*4.0
1.0
0.3
1.8
13.5
*6.0
1.0
0.3
1.8
14.5
*10
1.0
0.3
1.8
16.0
16
1.0
0.3
1.8
17.5
25
1.2
0.3
2.0
19.5
35
1.2
0.3
2.0
20.5
50
1.4
0.3
2.0
24.0
70
1.4
0.3
2.0
27.0
95
1.6
0.4
2.2
28.5
120
1.6
0.4
2.2
33.0
150
1.8
0.4
2.4
34.0
185
2.0
0.5
2.4
37.0
240
2.2
0.5
2.6
42.5
300
2.4
0.6
2.8
45.5
400
2.6
0.7
3.2
51.5
500
3.0
0.7
3.4
57.0
* If required, these sizes can be offered with stranded conductors also
Approx.
Weight of
Cable
Kgs./Km
115
150
185
220
275
285
405
490
650
800
1065
1250
1550
1880
2400
2920
3815
4750
Max. Dc
Conductor
Resistance at
20C
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Current Ratings
Direct
In Ground
In Ducts
In Air
Amps.
18
25
32
40
55
70
90
110
135
160
190
210
240
275
320
355
385
410
Amps.
16
21
27
34
45
58
76
92
115
140
170
190
210
240
275
305
345
370
Amps.
16
21
27
35
47
59
78
99
125
150
185
210
240
275
325
365
420
450
Nominal
Nominal
Thickness of Thickness
Insulation
of Inner
Sheath
Armour
Minimum
Thickness
Galv. Round Galv. Flat
of Outer
Steel Wire Steel Strip
Sheath
Nominal
Nominal
Dia.
Thickness
Sq. mm
mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.4
1.24
*2.5
0.9
0.3
1.4
1.24
*4.0
1.0
0.3
1.4
1.24
*6.0
1.0
0.3
1.4
1.24
*10
1.0
0.3
1.4
1.24
16
1.0
0.3
0.8
1.40
25
1.2
0.3
0.8
1.40
35
1.2
0.3
0.8
1.40
50
1.4
0.3
0.8
1.40
70
1.4
0.3
0.8
1.56
95
1.6
0.4
0.8
1.56
120
1.6
0.4
0.8
1.56
150
1.8
0.4
0.8
1.72
185
2.0
0.5
0.8
1.88
240
2.2
0.5
0.8
2.04
300
2.4
0.6
0.8
2.20
400
2.6
0.7
0.8
2.36
* If required, these sizes can be offered with standard conductors also
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Direct
In Ground
Current Ratings
In Ducts
In Air
mm
12.5
13.5
15.0
16.0
18.0
18.0
20.0
21.5
24.5
28.0
31.0
33.0
37.0
40.5
45.0
56.0
55.9
Kgs./Km
350
415
500
580
730
740
960
1200
1580
2020
2650
3160
3870
4750
5930
7300
9450
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Amps.
23
32
41
50
70
90
115
140
165
205
240
275
310
350
405
450
490
Amps.
20
27
35
44
58
75
97
120
145
180
215
235
270
300
345
385
425
Amps.
20
27
35
45
60
78
105
125
155
195
230
265
305
350
410
465
530
TABLE-8 POLYCAB 1.1 KV TWIN CORE, COPPER CONDUCTOR, PVC INSULATED, INNER SHEATHED
UNARMOURED, PVC SHEATHED CABLES CONFORMING TO IS: 1554 (PART I) AMENDED UPTO DATE.
Nominal
Cross
Sectional
Area
Nominal
Thickness of
Insulation
Nominal
Thickness of
Inner Sheath
Nominal
Thickness of
Outer Sheath
Approx.
Overall
Diameter
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
11.0
*2.5
0.9
0.3
1.8
12.0
*4.0
1.0
0.3
1.8
13.5
*6.0
1.0
0.3
1.8
14.5
*10
1.0
0.3
1.8
16.0
16
1.0
0.3
1.8
17.5
25
1.2
0.3
2.0
19.5
35
1.2
0.3
2.0
20.5
50
1.4
0.3
2.0
24.0
70
1.4
0.3
2.0
27.0
95
1.6
0.4
2.2
28.5
120
1.6
0.4
2.2
33.0
150
1.8
0.4
2.4
34.0
185
2.0
0.5
2.4
37.0
240
2.2
0.5
2.6
42.5
300
2.4
0.6
2.8
45.5
400
2.6
0.7
3.2
51.5
* If required, these sizes can be offered with stranded conductors also
Approx.
Weight Of
Cable
Max. Dc
Conductor
Resistance at
20C
Direct
In Ground
Current Ratings
In Ducts
In Air
Kgs./Km
135
185
235
295
400
485
715
925
1270
1670
2250
2750
3410
4170
5370
6640
8770
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Amps.
23
32
41
50
70
90
115
140
165
205
240
275
310
350
405
450
490
Amps.
20
27
35
44
58
75
97
120
145
180
215
235
270
300
345
385
425
Amps.
20
27
35
45
60
78
105
125
155
195
230
265
305
350
410
465
530
Nominal
Thickness
of
Insulation
Nominal
Thickness
of Inner
Sheath
Armour
Minimum
Thickness
of Outer
Sheath
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Current Ratings
Direct
In Ground
In Ducts
In Air
mm
12.5
14.0
15.5
17.0
19.0
20.0
22.0
25.0
27.0
31.0
34.0
38.0
42.0
46.0
52.0
56.5
64.0
72.0
Kgs./Km
375
425
500
575
700
650
800
950
1200
1500
1900
2240
2700
3200
3990
4850
6100
7600
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Amps.
16
21
28
35
46
60
76
92
110
135
165
185
210
235
275
305
335
350
Amps.
14
18
23
30
39
50
63
77
95
115
140
155
175
200
235
260
290
310
Amps.
13
18
23
30
40
51
70
86
105
130
155
180
205
240
280
315
375
410
TABLE-10 POLYCAB 1.1 KV THREE CORE, ALUMINIUM CONDUCTOR, PVC INSULATED, INNER SHEATHED
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal
Nominal
Nominal
Nominal
Approx.
Cross
Thickness of Thickness of Thickness of
Overall
Sectional
Insulation
Inner Sheath Outer Sheath
Diameter
Area
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
11.5
*2.5
0.9
0.3
1.8
12.5
*4.0
1.0
0.3
1.8
13.5
*6.0
1.0
0.3
1.8
15.0
*10
1.0
0.3
1.8
16.5
16
1.0
0.3
1.8
17.5
25
1.2
0.3
2.0
22.0
35
1.2
0.3
2.0
23.0
50
1.4
0.3
2.0
27.0
70
1.4
0.4
2.2
31.0
95
1.6
0.4
2.2
33.0
120
1.6
0.4
2.2
36.0
150
1.8
0.5
2.4
41.0
185
2.0
0.5
2.6
45.0
240
2.2
0.6
2.8
50.0
300
2.4
0.6
3.0
55.5
400
2.6
0.7
3.4
63.5
500
3.0
0.7
3.8
71.0
* If required, these sizes can be offered with stranded conductors also
10
Approx.
Weight Of
Cable
Kgs./Km
130
170
210
255
325
360
520
640
850
1110
1425
1690
2120
2600
3290
4050
5290
6570
Max. Dc
Conductor
Resistance at
20C
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Current Ratings
Direct
In Ground
In Ducts
In Air
Amps.
16
21
28
35
46
60
76
92
110
135
165
185
210
235
275
305
335
350
Amps.
14
18
23
30
39
50
63
77
95
115
140
155
175
200
235
260
290
310
Amps.
13
18
23
30
40
51
70
86
105
130
155
180
205
240
280
315
375
410
Nominal
Thickness
of Insulation
Nominal
Thickness
of Inner
Sheath
Sq. mm
*1.5
*2.5
*4.0
*6.0
*10
16
25
35
50
70
95
120
150
185
240
300
400
mm
0.8
0.9
1.0
1.0
1.0
1.0
1.2
1.2
1.4
1.4
1.6
1.6
1.8
2.0
2.2
2.4
2.6
mm
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.4
0.4
0.5
0.5
0.6
0.6
0.7
Armour
Galv. Round Galv. Flat
Steel Wire Steel Strip
Nominal
Nominal
Dia.
Thickness
mm
1.4
1.4
1.4
1.4
1.4
-
Minimum
Thickness
Of Outer
Sheath
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Direct
In Ground
In Ducts
In Air
mm
1.24
1.24
1.24
1.24
1.40
1.40
1.40
1.40
1.56
1.56
1.56
1.72
1.88
1.88
2.2
2.36
2.52
mm
12.5
14.0
15.5
17.0
19.0
20.0
22.0
25.0
27.0
31.0
34.0
38.0
42.0
46.0
52.0
56.5
64.0
Kgs./Km
405
475
580
700
890
950
1270
1600
2150
2800
3670
4470
5500
6650
8450
10450
13525
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Amps.
21
27
36
45
60
77
99
120
145
175
210
240
270
300
345
385
425
Amps.
17
24
30
38
50
64
81
99
125
150
175
195
225
255
295
335
360
Amps.
17
24
30
39
52
66
90
110
135
165
200
230
265
305
355
400
455
mm
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
Current Ratings
TABLE-12 POLYCAB 1.1 KV THREE CORE, COPPER CONDUCTOR, PVC INSULATED, INNER SHEATHED
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal
Cross
Sectional
Area
Nominal
Thickness of
Insulation
Nominal
Thickness of
Inner Sheath
Nominal
Thickness of
Outer Sheath
Approx.
Overall
Diameter
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
11.5
*2.5
0.9
0.3
1.8
12.5
*4.0
1.0
0.3
1.8
13.5
*6.0
1.0
0.3
1.8
15.0
*10
1.0
0.3
1.8
16.5
16
1.0
0.3
1.8
17.5
25
1.2
0.3
2.0
22.0
35
1.2
0.3
2.0
23.0
50
1.4
0.3
2.0
27.0
70
1.4
0.4
2.2
31.0
95
1.6
0.4
2.2
33.0
120
1.6
0.4
2.2
36.0
150
1.8
0.5
2.4
41.0
185
2.0
0.5
2.6
45.0
240
2.2
0.6
2.8
50.0
300
2.4
0.6
3.0
55.5
400
2.6
0.7
3.4
63.5
* If required, these sizes can be offered with stranded conductors also
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance at
20C
Current Ratings
Direct
In Ground
In Ducts
In Air
Kgs./Km
160
220
290
370
510
660
990
1290
1780
2410
3190
3920
4910
6040
7750
9620
12715
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Amps.
21
27
36
45
60
77
99
120
145
175
210
240
270
300
345
385
425
Amps.
17
24
30
38
50
64
81
99
125
150
175
195
225
255
295
335
360
Amps.
17
24
30
39
52
66
90
110
135
165
200
230
265
305
355
400
455
11
Nominal Cross
Ssectional Area
Nominal Thickness
of Insulation
Approx.
Weight
of Cable
Max. Dc Conductor
Current Ratings
Resistance At 20 C Direct In In Ducts In Air
Main
Neutral
Ground
Main
Neutral
Main
Neutral
Sq. mm
Sq. mm
mm
mm
mm
mm
mm
mm
Kgs./Km
Ohm/Km
Ohm/Km
Amps.
Amps.
Amps.
25
16
1.2
1.0
0.3
0.8
1.40
23.5
900
1.200
1.910
76
63
70
35
16
1.2
1.0
0.3
0.8
1.40
26.0
1030
0.868
1.910
92
77
86
50
25
1.4
1.2
0.3
0.8
1.56
30.0
1350
0.641
1.200
100
95
105
70
35
1.4
1.2
0.4
0.8
1.56
32.5
1725
0.443
0.868
135
115
130
95
50
1.6
1.4
0.4
0.8
1.56
36.5
2130
0.320
0.641
165
140
155
120
70
1.6
1.4
0.5
0.8
1.72
40.5
2580
0.253
0.443
185
155
180
150
70
1.8
1.4
0.5
0.8
1.88
44.0
3050
0.206
0.443
210
175
205
185
95
2.0
1.6
0.5
0.8
2.04
50.0
3650
0.164
0.320
235
200
240
240
120
2.2
1.6
0.6
0.8
2.20
55.0
4580
0.125
0.253
275
235
280
300
150
2.4
1.8
0.6
0.8
2.36
61.0
5500
0.100
0.206
305
260
315
400
185
2.6
2.0
0.7
0.8
2.68
68.0
7000
0.078
0.164
335
290
375
500
240
3.0
2.2
0.7
0.8
2.84
75.0
8600
0.061
0.125
350
310
410
TABLE-14 POLYCAB 1.1 KV 3 1/2 CORE, ALUMINIUM CONDUCTOR, PVC INSULATED, INNER SHEATHED,
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal Cross
Sectional Area
12
Nominal Thickness of
Insulation
Minimum
Thickness
of Inner
Sheath
Nominal
Thickness
of Outer
Sheath
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Main
Neutral
Main
Neutral
Sq. mm
Sq. mm
Sq. mm
Sq. mm
mm
mm
mm
25
16
1.2
1.0
0.3
2.0
35
16
1.2
1.0
0.3
2.0
Max. Dc Conductor
Resistance at 20C
Current Ratings
Main
Neutral
Direct In
Ground
In Ducts
In Air
Kgs./Km
Ohm/Km
Ohm/Km
Amps.
Amps.
Amps.
22.5
615
1.200
1.910
76
63
70
25.0
715
0.868
1.910
92
77
86
50
25
1.4
1.2
0.3
2.2
29.0
955
0.641
1.200
110
95
105
70
35
1.4
1.2
0.4
2.2
33.0
1290
0.443
0.868
135
115
130
95
50
1.6
1.4
0.4
2.2
36.5
1640
0.320
0.641
165
140
155
120
70
1.6
1.4
0.5
2.4
39.0
2020
0.253
0.443
185
155
180
150
70
1.8
1.4
0.5
2.4
42.5
2380
0.206
0.443
210
175
205
185
95
2.0
1.6
0.5
2.6
47.0
2945
0.164
0.320
235
200
240
240
120
2.2
1.6
0.6
3.0
54.0
3800
0.125
0.253
275
235
280
300
150
2.4
1.8
0.6
3.2
58.0
4650
0.100
0.206
305
260
315
400
185
2.6
2.0
0.7
3.4
65.0
6000
0.078
0.164
335
290
375
500
240
3.0
2.2
0.7
3.8
74.0
7400
0.061
0.125
350
310
410
Nominal Thickness
of Insulation
Approx.
Weight
of Cable
Max. Dc Conductor
Resistance At 20C
Main
Neutral
Current Ratings
Direct In In Ducts
Ground
In Air
Main
Neutral
Main
Neutral
Sq. mm
Sq. mm
mm
mm
mm
mm
mm
mm
Kgs./Km
Ohm/Km
Ohm/Km
Amps.
Amps.
Amps.
25
16
1.2
1.0
0.3
0.8
1.40
23.5
1465
0.727
1.150
99
81
90
35
16
1.2
1.0
0.3
0.8
1.40
26.0
1780
0.524
1.150
120
99
110
50
25
1.4
1.2
0.3
0.8
1.56
30.0
2435
0.387
0.727
145
125
135
70
35
1.4
1.2
0.4
0.8
1.56
32.5
3245
0.268
0.524
175
150
165
95
50
1.6
1.4
0.4
0.8
1.56
36.5
4210
0.193
0.387
210
175
200
120
70
1.6
1.4
0.5
0.8
1.72
40.5
5240
0.153
0.268
240
195
230
150
70
1.8
1.4
0.5
0.8
1.88
44.0
6270
0.124
0.268
270
225
265
185
95
2.0
1.6
0.5
0.8
2.04
50.0
7675
0.099
0.193
300
255
305
240
120
2.2
1.6
0.6
0.8
2.20
55.0
9780
0.075
0.153
345
295
355
300
150
2.4
1.8
0.6
0.8
2.36
61.0
12000
0.060
0.124
385
335
400
400
185
2.6
2.0
0.7
0.8
2.68
68.0
15570
0.047
0.099
425
360
455
TABLE-16 POLYCAB 1.1 KV 3 1/2 CORE, COPPER CONDUCTOR, PVC INSULATED, INNER SHEATHED,
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal Cross
Sectional Area
Nominal Thickness of
Insulation
Minimum
Thickness
of Inner
Sheath
Nominal
Thickness
of Outer
Sheath
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Main
Neutral
Main
Neutral
Sq. mm
Sq. mm
Sq. mm
Sq. mm
mm
mm
mm
25
16
1.2
1.0
0.3
2.0
35
16
1.2
1.0
0.3
50
25
1.4
1.2
70
35
1.4
95
50
1.6
Max. Dc Conductor
Resistance at 20C
Current Ratings
Main
Neutral
Direct In
Ground
In Ducts
In Air
Kgs./Km
Ohm/Km
Ohm/Km
Amps.
Amps.
Amps.
22.5
1180
0.727
1.150
99
81
90
2.0
25.0
1465
0.524
1.150
120
99
110
0.3
2.2
29.0
2040
0.387
0.727
145
125
135
1.2
0.4
2.2
33.0
2810
0.268
0.524
175
150
165
1.4
0.4
2.2
36.5
3715
0.193
0.387
210
175
200
120
70
1.6
1.4
0.5
2.4
39.0
4680
0.153
0.268
240
195
230
150
70
1.8
1.4
0.5
2.4
42.5
5600
0.124
0.268
270
225
265
185
95
2.0
1.6
0.5
2.6
47.0
6970
0.099
0.193
300
255
305
240
120
2.2
1.6
0.6
3.0
54.0
9000
0.075
0.153
345
295
355
300
150
2.4
1.8
0.6
3.2
58.0
11150
0.060
0.124
385
335
400
400
185
2.6
2.0
0.7
3.4
65.0
14570
0.047
0.099
425
360
455
13
Nominal
Thickness
of Insulation
Nominal
Thickness
of Inner
Sheath
Armour
Minimum
Thickness
Galv. Round Galv. Flat
of Outer
Steel Wire Steel Strip
Sheath
Nominal
Nominal
Dia.
Thickness
Sq. mm
mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.4
1.24
*2.5
0.9
0.3
1.4
1.24
*4.0
1.0
0.3
1.4
1.24
*6.0
1.0
0.3
1.4
1.24
*10
1.0
0.3
0.8
1.40
16
1.0
0.3
0.8
1.40
25
1.2
0.3
0.8
1.40
35
1.2
0.3
0.8
1.40
50
1.4
0.4
0.8
1.56
70
1.4
0.4
0.8
1.56
95
1.6
0.4
0.8
1.72
120
1.6
0.5
0.8
1.88
150
1.8
0.5
0.8
1.88
185
2.0
0.6
0.8
2.04
240
2.2
0.6
0.8
2.36
300
2.4
0.7
0.8
2.52
400
2.6
0.7
0.8
2.84
500
3.0
0.7
0.8
3.00
* If required, these sizes can be offered with standard conductors also
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Direct In
Ground
Current Ratings
In Ducts
In Air
mm
15.0
16.5
18.0
19.5
20.0
23.0
24.0
27.0
31.0
35.0
38.0
42.0
46.0
51.0
58.0
66.0
72.0
80.0
Kgs./Km
400
480
550
650
660
750
950
1165
1540
1800
2400
2800
3350
4000
5050
6200
7850
9600
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Amps.
16
21
28
35
46
60
76
92
110
135
165
185
210
235
275
305
335
350
Amps.
14
18
23
30
39
50
63
77
95
115
140
155
175
200
235
260
290
310
Amps.
13
18
23
30
40
51
70
86
105
130
155
180
205
240
280
315
375
410
TABLE-18 POLYCAB 1.1 KV FOUR CORE, ALUMINIUM CONDUCTOR, PVC INSULATED, INNER SHEATHED,
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal
Nominal
Nominal
Nominal
Approx.
Cross
Thickness of Thickness of Thickness of
Overall
Sectional
Insulation
Inner Sheath Outer Sheath
Diameter
Area
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
12.5
*2.5
0.9
0.3
1.8
14.0
*4.0
1.0
0.3
1.8
15.5
*6.0
1.0
0.3
1.8
17.0
*10
1.0
0.3
1.8
19.0
16
1.0
0.3
2.0
21.5
25
1.2
0.3
2.0
24.0
35
1.2
0.3
2.0
26.5
50
1.4
0.4
2.2
32.5
70
1.4
0.4
2.2
33.5
95
1.6
0.4
2.4
38.5
120
1.6
0.5
2.4
41.5
150
1.8
0.5
2.6
46.0
185
2.0
0.6
2.6
50.5
240
2.2
0.6
3.0
58.0
300
2.4
0.7
3.4
64.0
400
2.6
0.7
3.6
72.0
500
3.0
0.7
4.0
80.0
* If required, these sizes can be offered with stranded conductors also
14
Approx.
Weight Of
Cable
Kgs./Km
150
180
220
260
340
460
600
800
1100
1400
1850
2250
2750
3400
4300
5300
6900
8600
Max. Dc
Conductor
Resistance at
20C
Ohm/Km
18.100
12.100
7.410
4.610
3.080
1.910
1.200
0.868
0.641
0.443
0.320
0.253
0.206
0.164
0.125
0.100
0.078
0.061
Current Ratings
Direct In
Ground
In Ducts
In Air
Amps.
16
21
28
35
46
60
76
92
110
135
165
185
210
235
275
305
335
350
Amps.
14
18
23
30
39
50
63
77
95
115
140
155
175
200
235
260
290
310
Amps.
13
18
23
30
40
51
70
86
105
130
155
180
205
240
280
315
375
410
Nominal
Thickness
of Insulation
Nominal
Thickness
of Inner
Sheath
Armour
Minimum
Thickness
of Outer
Sheath
Approx.
Overall
Diameter
Approx.
Weight of
Cable
Max. Dc
Conductor
Resistance
at 20C
Current Ratings
Direct In
Ground
In Ducts
In Air
mm
15.0
16.5
18.0
19.5
20.0
23.0
24.0
27.0
31.0
35.0
38.0
42.0
46.0
51.0
58.0
66.0
80.0
Kgs./Km
440
550
650
800
910
1150
1570
2035
2780
3540
4760
5770
7065
8580
11000
13625
17750
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Amps.
21
27
36
45
60
77
99
120
145
175
210
240
270
300
345
385
425
Amps.
17
24
30
38
50
64
81
99
125
150
175
195
225
255
295
335
360
Amps.
17
24
30
39
52
66
90
110
135
165
200
230
265
305
355
400
455
TABLE-20 POLYCAB 1.1 KV FOUR CORE, COPPER CONDUCTOR, PVC INSULATED, INNER SHEATHED,
UNARMOURED PVC SHEATHED CABLES CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Nominal
Nominal
Nominal
Nominal
Approx.
Cross
Thickness of Thickness of Thickness of
Overall
Sectional
Insulation
Inner Sheath Outer Sheath
Diameter
Area
Sq. mm
mm
mm
mm
mm
*1.5
0.8
0.3
1.8
12.5
*2.5
0.9
0.3
1.8
14.0
*4.0
1.0
0.3
1.8
15.5
*6.0
1.0
0.3
1.8
17.0
*10
1.0
0.3
1.8
19.0
16
1.0
0.3
2.0
21.5
25
1.2
0.3
2.0
24.0
35
1.2
0.3
2.0
26.5
50
1.4
0.4
2.2
32.5
70
1.4
0.4
2.2
33.5
95
1.6
0.4
2.4
38.5
120
1.6
0.5
2.4
41.5
150
1.8
0.5
2.6
46.0
185
2.0
0.6
2.6
50.5
240
2.2
0.6
3.0
58.0
300
2.4
0.7
3.4
64.0
400
2.6
0.7
3.6
72.0
* If required, these sizes can be offered with stranded conductors also
Approx.
Weight of
Cable
Kgs./Km
190
245
320
410
590
860
1220
1670
2340
3140
4210
5220
6470
7980
10250
12730
16800
Max. Dc
Conductor
Resistance at
20 C
Ohm/Km
12.100
7.410
4.610
3.080
1.830
1.150
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.099
0.075
0.060
0.047
Current Ratings
Direct In
Ground
In Ducts
In Air
Amps.
21
27
36
45
60
77
99
120
145
175
210
240
270
300
345
385
425
Amps.
17
24
30
38
50
64
81
99
125
150
175
195
225
255
295
335
360
Amps.
17
24
30
39
52
66
90
110
135
165
200
230
265
305
355
400
455
15
mm
mm
mm
Nominal Minimum
Approx.
Sheath
Sheath
Overall Diameter
Thickness Thickness UnarArUnar- Armoured moured moured
moured
mm
mm
mm
mm
Approx.
Weight of Cable
Unarmoured
Max. Dc
Current Ratings
Conductor Direct
In
In
Resistance
ArIn
Ducts
Air
moured at 20C Ground
Amps.
Amps.
Amps.
0.8
0.3
1.4
1.80
1.24
10.50
13.50
130
350
12.1
23
20
20
0.8
0.3
1.4
1.80
1.24
11.00
14.00
160
400
12.1
21
17
17
0.8
0.3
1.4
1.80
1.24
11.50
15.00
190
450
12.1
21
17
17
0.8
0.3
1.4
1.80
1.24
12.50
15.50
225
500
12.1
21
17
17
0.8
0.3
1.4
1.80
1.24
13.00
16.00
250
550
12.1
15
13
13
0.8
0.3
1.4
1.80
1.24
13.50
16.50
265
565
12.1
14
13
13
10
0.8
0.3
1.4
1.80
1.40
16.50
19.00
350
750
12.1
13
11
11
12
0.8
0.3
0.8
1.80
1.24
17.50
19.50
400
650
12.1
12
10
10
14
0.8
0.3
0.8
1.80
1.40
18.00
20.00
450
760
12.1
11
10
10
16
0.8
0.3
0.8
1.80
1.40
19.50
21.00
500
800
12.1
11
19
0.8
0.3
0.8
2.00
1.40
20.00
22.00
600
850
12.1
10
24
0.8
0.3
0.8
2.00
1.40
23.00
25.00
725
1050
12.1
30
0.8
0.3
0.8
2.00
1.40
24.50
26.50
860
1200
12.1
37
0.8
0.3
0.8
2.00
1.40
26.00
28.00
1050
1400
12.1
61
0.8
0.4
0.8
2.20
1.56
33.00
35.00
1650
2100
12.1
TABLE-22 POLYCAB 1.1 KV, ANNEALED HIGH CONDUCTIVITY SOLID COPPER CONDUCTOR, 2.5 SQ.MM
PVC INSULATED, INNER SHEATHED, ARMOURED / UNARMOURED PVC SHEATHED CONTROL CABLES
CONFORMING TO IS : 1554 (PART I) AMENDED UPTO DATE
Number Nominal
Min.
Armour
of Cores Thickness ThickGalv.
Galv.
of Insula- ness
Round Flat Steel
-tion
of Inner Steel Wire Strip Nom.
Sheath Nom. Dia Thick
mm
16
mm
mm
mm
Nominal Minimum
Approx. Overall
Sheath
Sheath
Diameter
Thickness Thickness UnarArUnar- Armoured moured moured
moured
mm
mm
mm
mm
Approx. Weight
of Cable
Unarmoured
Max. Dc
Current Ratings
Conductor Direct
In
In
Resistance
ArIn
Ducts
Air
moured At 20C Ground
Amps.
Amps.
Amps.
0.9
0.3
1.4
1.8
1.24
11.00
14.50
160
425
7.41
32
27
27
0.9
0.3
1.4
1.8
1.24
11.50
15.50
225
475
7.41
27
24
24
0.9
0.3
1.4
1.8
1.24
11.50
16.50
250
530
7.41
27
24
24
0.9
0.3
1.4
1.8
1.24
14.00
17.50
300
600
7.41
27
24
24
0.9
0.3
1.4
1.8
1.24
15.50
18.50
340
675
7.41
20
18
18
0.9
0.3
1.4
1.8
1.24
15.50
18.50
375
700
7.41
20
17
17
10
0.9
0.3
0.8
1.8
1.40
19.00
21.00
500
780
7.41
18
15
15
12
0.9
0.3
0.8
2.0
1.40
20.00
22.00
600
850
7.41
17
14
14
14
0.9
0.3
0.8
2.0
1.40
21.00
23.00
650
950
7.41
16
13
13
16
0.9
0.3
0.8
2.0
1.40
22.00
24.00
750
1050
7.41
15
13
13
19
0.9
0.3
0.8
2.0
1.40
23.00
25.00
850
1150
7.41
14
12
12
24
0.9
0.3
0.8
2.0
1.40
27.00
29.00
1050
1400
7.41
13
11
11
30
0.9
0.3
0.8
2.0
1.56
28.50
30.50
1250
1700
7.41
12
10
10
37
0.9
0.4
0.8
2.2
1.56
31.00
33.00
1550
2000
7.41
11
10
10
61
0.9
0.4
0.8
2.2
1.56
38.50
41.00
2450
3100
7.41
Conductor
Construction
Max.cond.
resistance in
Ohm/Km at 20C
Single Core &
Multi Core
Size in sq.mm
Conductor
Construction
Max. cond.
resistance in
Ohm/Km at 20C
Single Core &
Multi Core
1.5*
1/1.38
12.100
120
37/2.03
0.153
2.5*
1/1.78
7.410
150
37/2.24
0.124
4.0*
1/2.24
4.610
185
37/2.50
0.099
6.0*
1/2.76
3.080
240
61/2.24
0.075
10.0
7/1.35
1.830
300
61/2.50
0.060
16.0
7/1.70
1.150
400
61/2.85
0.047
25.0
7/2.14
0.727
500
61/3.20
0.037
35.0
7/2.50
0.524
630
91/3.00
0.028
50.0
7/3.00
0.387
70.0
19/2.14
0.268
800
127/2.83
0.022
95.0
19/2.50
0.193
1000
127/3.16
0.018
Twin Core
3, 3 1/2, 4 Core
Area
Twin Core
3, 3 1/2, 4 Core
sq.mm
Amp.
Amp.
sq.mm
Amp.
Amp.
1.5
20
17
70
195
165
2.5
27
24
95
230
200
4.0
35
30
120
265
235
6.0
45
39
150
305
265
10.0
60
52
185
350
305
16.0
78
66
240
410
355
25.0
105
90
300
465
400
35.0
125
110
400
530
455
50.0
155
135
17
A.C Resistance at
70C
Reactance at 50 Hz
Capacitance
Impedance at 70C
Voltage Drop
mm
Ohm/Km
Ohm/Km
F/Km
Ohm/Km
V/Km/A
kA
16
2.3000
0.1250
0.81
2.3000
3.980
1.22
25
1.4400
0.1200
0.83
1.4500
2.510
1.90
35
1.0400
0.1140
0.95
1.0500
1.820
2.66
50
0.7700
0.1120
0.95
0.7780
1.350
3.80
70
0.5330
0.1040
1.13
0.5430
0.940
5.32
95
0.3850
0.0970
1.17
0.3970
0.688
7.22
120
0.3050
0.0926
1.32
0.3180
0.552
9.12
150
0.2480
0.0916
1.30
0.2650
0.459
11.41
185
0.1980
0.0895
1.35
0.2170
0.377
14.07
240
0.1520
0.0876
1.40
0.1750
0.303
18.25
300
0.1220
0.0863
1.44
0.1500
0.259
22.81
400
0.0961
0.0845
1.48
0.1280
0.222
30.41
500
0.0761
0.0835
1.47
0.1130
0.196
38.02
630
0.0606
0.0833
1.45
0.1030
0.178
47.90
800
0.0495
0.0816
1.61
0.0954
0.165
60.83
1000
0.0416
0.0797
1.81
0.0899
0.156
76.03
18
Nominal area of
Conductor
A.C Resistance at
70C
Reactance at 50 Hz
Capacitance
Impedance at 70C
Voltage Drop
mm
1.5
2.5
4.0
6.0
10.0
16.0
25.0
35.0
50.0
70.0
95.0
120.0
150.0
185.0
240.0
300.0
400.0
Ohm/Km
21.7000
14.5000
8.9000
5.5400
3.7000
2.3000
1.4400
1.0400
0.7700
0.5330
0.3850
0.3050
0.2490
0.1980
0.1520
0.1220
0.0961
Ohm/Km
0.1120
0.1100
0.1050
0.0988
0.0938
0.0862
0.0854
0.0827
0.0825
0.0771
0.0767
0.0744
0.0745
0.0744
0.0740
0.0732
0.0727
F/Km
0.38
0.41
0.45
0.52
0.60
0.80
0.84
0.96
0.98
1.12
1.16
1.28
1.26
1.28
1.31
1.35
1.40
ohm/Km
21.700
14.500
8.900
5.540
3.700
2.300
1.440
1.050
0.775
0.538
0.393
0.314
0.259
0.212
0.169
0.142
0.121
V/Km/A
37.700
25.200
15.400
9.600
6.410
3.980
2.500
1.810
1.340
0.932
0.680
0.543
0.449
0.367
0.293
0.247
0.209
kA
0.11
0.19
0.30
0.46
0.76
1.22
1.90
2.66
3.80
5.32
7.22
9.12
11.41
14.07
18.25
22.81
30.41
A.C Resistance at
85C
Reactance at 50 Hz
Capacitance
Impedance at 85C
Voltage Drop
mm
16
Ohm/Km
2.4100
Ohm/Km
0.1250
F/Km
0.81
Ohm/Km
2.4100
V/Km/A
4.180
kA
1.01
25
1.5100
0.1200
0.83
1.5200
2.630
1.72
35
1.0100
0.1140
0.95
1.1000
1.910
2.40
50
0.8090
0.1120
0.95
0.8170
1.410
3.43
70
0.5590
0.1040
1.13
0.5690
0.985
4.80
95
0.4040
0.0970
1.17
0.4160
0.720
6.52
120
0.3200
0.0926
1.32
0.3330
0.577
8.23
150
0.2610
0.0916
1.30
0.2760
0.479
10.29
185
0.2080
0.0895
1.35
0.2260
0.392
12.69
240
0.1590
0.0876
1.40
0.1820
0.315
16.46
300
0.1280
0.0863
1.44
0.1540
0.267
20.58
400
0.1010
0.0845
1.48
0.1310
0.228
27.44
500
0.0796
0.0835
1.47
0.1150
0.200
34.30
630
0.0632
0.0833
1.45
0.1050
0.181
43.21
800
0.0515
0.0816
1.61
0.0964
0.167
54.88
1000
0.0431
0.0797
1.81
0.0906
0.157
68.59
A.C Resistance at
85C
Reactance at 50 Hz
Capacitance
Impedance at 85C
Voltage Drop
mm
1.5
2.5
4.0
6.0
10.0
16.0
25.0
35.0
50.0
70.0
95.0
120.0
150.0
185.0
240.0
300.0
400.0
Ohm/Km
22.800
15.300
9.350
5.820
3.890
2.410
1.510
1.010
0.809
0.559
0.404
0.320
0.261
0.208
0.159
0.128
0.101
Ohm/Km
0.1120
0.1100
0.1050
0.0988
0.0938
0.0862
0.0854
0.0827
0.0825
0.0771
0.0767
0.0744
0.0745
0.0744
0.0740
0.0732
0.0727
F/Km
0.38
0.41
0.45
0.52
0.60
0.80
0.84
0.96
0.98
1.12
1.16
1.28
1.26
1.28
1.31
1.35
1.40
Ohm/Km
22.800
15.300
9.350
5.820
3.890
2.410
1.520
1.010
0.813
0.565
0.412
0.329
0.271
0.221
0.176
0.148
0.124
V/Km/A
39.600
26.400
16.200
10.100
6.730
4.180
2.630
1.900
1.41
0.978
0.713
0.569
0.470
0.383
0.304
0.256
0.215
kA
0.10
0.17
0.27
0.41
0.69
1.01
1.72
2.40
3.43
4.80
6.52
8.23
10.29
12.69
16.46
20.58
27.44
19
A.C Resistance at
70C
Reactance at 50 Hz
Capacitance
Impedance at 70C
Voltage Drop
mm
16
25
35
50
70
95
120
150
185
240
300
400
500
630
800
1000
Ohm/Km
1.3800
0.8700
0.6270
0.4630
0.3210
0.2320
0.1840
0.1500
0.1200
0.0928
0.0751
0.0604
0.0490
0.0401
0.0339
0.0297
Ohm/Km
0.1250
0.1200
0.1140
0.1120
0.1040
0.0970
0.0926
0.0916
0.0895
0.0876
0.0863
0.0845
0.0835
0.0833
0.0816
0.0797
F/Km
0.81
0.83
0.95
0.95
1.13
1.17
1.32
1.30
1.35
1.40
1.44
1.48
1.47
1.45
1.61
1.81
Ohm/Km
1.3800
0.8780
0.6380
0.4770
0.3370
0.2510
0.2060
0.1760
0.1500
0.1280
0.1140
0.1040
0.0968
0.0925
0.0883
0.0850
V/Km/A
2.390
1.520
1.100
0.830
0.585
0.435
0.357
0.304
0.260
0.221
0.198
0.180
0.168
0.160
0.153
0.147
kA
1.84
2.88
4.03
5.75
8.05
10.93
13.80
17.25
21.28
27.60
34.50
46.00
57.50
72.45
92.00
115.00
20
Nominal area of
Conductor
A.C Resistance at
70C
Reactance at 50 Hz
Capacitance
Impedance at 70C
Voltage Drop
mm
1.5
2.5
4.0
6.0
10.0
16.0
25.0
35.0
50.0
70.0
95.0
120.0
150.0
185.0
240.0
300.0
400.0
Ohm/Km
14.5000
8.9000
5.5200
3.6900
2.1900
1.3800
0.8700
0.6300
0.4640
0.3210
0.2320
0.1840
0.1500
0.1210
0.0930
0.0750
0.0604
Ohm/Km
0.1140
0.1100
0.1060
0.1001
0.0907
0.0862
0.0854
0.0827
0.0825
0.0771
0.0767
0.0744
0.0745
0.0744
0.0740
0.0732
0.0727
F/Km
0.37
0.40
0.44
0.51
0.67
0.80
0.84
0.96
0.98
1.12
1.16
1.28
1.26
1.28
1.31
1.35
1.40
Ohm/Km
14.500
8.900
5.520
3.690
2.190
1.380
0.870
0.630
0.471
0.331
0.244
0.199
0.168
0.142
0.119
0.105
0.095
V/Km/A
25.100
15.400
9.560
6.390
3.800
2.390
1.510
1.010
0.815
0.572
0.423
0.344
0.290
0.246
0.206
0.182
0.164
kA
0.17
0.29
0.46
0.69
1.15
1.84
2.88
4.03
5.75
8.05
10.93
13.80
17.25
21.28
27.60
34.50
46.00
A.C Resistance at
85C
Reactance at 50 Hz
Capacitance
Impedance at 85C
Voltage Drop
mm
16
Ohm/Km
1.4400
Ohm/Km
0.1250
F/Km
0.81
Ohm/Km
1.4500
V/Km/A
2.510
kA
1.66
25
0.9130
0.1200
0.83
0.9210
1.590
2.59
35
0.6580
0.1140
0.95
0.6680
1.160
3.63
50
0.4860
0.1120
0.95
0.4990
0.864
5.19
70
0.3370
0.1040
1.13
0.3530
0.611
7.26
95
0.2430
0.0970
1.17
0.2620
0.453
9.86
120
0.1930
0.0926
1.32
0.2140
0.371
12.45
150
0.1570
0.0916
1.30
0.1820
0.315
15.57
185
0.1260
0.0895
1.35
0.1550
0.268
19.20
240
0.0971
0.0876
1.40
0.1310
0.226
24.91
300
0.0785
0.0863
1.44
0.1170
0.202
31.13
400
0.0630
0.0845
1.48
0.1050
0.183
41.51
500
0.0509
0.0835
1.47
0.0978
0.169
51.89
630
0.0416
0.0833
1.45
0.0931
0.161
65.38
800
0.0351
0.0816
1.61
0.0888
0.154
83.02
1000
0.0306
0.0797
1.81
0.0853
0.148
103.78
A.C Resistance at
85C
Reactance at 50 Hz
Capacitance
Impedance at 85C
Voltage Drop
mm
1.5
2.5
4.0
6.0
10.0
16.0
25.0
35.0
50.0
70.0
95.0
120.0
150.0
185.0
2400.
300.0
400.0
Ohm/Km
15.2000
9.3000
5.7900
3.8700
2.3000
1.4400
0.9130
0.6580
0.4860
0.3370
0.2430
0.1930
0.1570
0.1260
0.0972
0.0787
0.0630
Ohm/Km
0.1140
0.1100
0.1060
0.1001
0.0907
0.0862
0.0854
0.0827
0.0825
0.0771
0.0767
0.0744
0.0745
0.0744
0.0740
0.0732
0.0727
F/Km
0.37
0.40
0.44
0.51
0.67
0.80
0.84
0.96
0.98
1.12
1.16
1.28
1.26
1.28
1.31
1.35
1.40
Ohm/Km
15.2000
9.3000
5.7900
3.8700
2.3000
1.4500
0.9170
0.6630
0.4930
0.3460
0.2550
0.2070
0.1740
0.1470
0.1220
0.1070
0.0962
V/Km/A
26.300
16.100
10.000
6.700
3.980
2.510
1.590
1.150
0.854
0.599
0.442
0.359
0.301
0.254
0.212
0.186
0.167
kA
0.16
0.26
0.42
0.62
1.04
1.66
2.59
3.63
5.19
7.26
9.86
12.45
15.57
19.20
24.91
31.13
41.51
21
Rating Factors
1 ) F O R A I R AND GROUND TEMPERATURE
A. Rating factors for variation in ambient air temperature
Ambient Temp (C)
25
30
35
40
45
50
Rating Factors
1.25
1.16
1.09
1.00
0.90
0.80
15
20
25
30
35
40
45
Rating Factors
1.17
1.12
1.06
1.00
0.94
0.87
0.79
15
20
25
30
35
40
45
Rating Factors
1.17
1.12
1.06
1.00
0.94
0.87
0.79
Size
Above 25 mm2 Upto 300 mm2
1.00
1.00
1.00
90
0.99
0.98
0.97
105
0.98
0.97
0.96
120
0.97
0.96
0.95
150
0.96
0.94
0.92
180 or more
0.95
0.93
0.91
Cm
Upto 25 mm
75
22
Nominal area of
conductor mm2
100
120
150
200
250
300
1.5
1.10
1.05
1.00
0.92
0.86
0.81
2.5
1.10
1.05
1.00
0.92
0.86
0.81
4.0
1.10
1.05
1.00
0.92
0.86
0.81
6.0
1.10
1.05
1.00
0.92
0.86
0.81
10.0
1.10
1.06
1.00
0.92
0.85
0.80
16.0
1.12
1.06
1.00
0.91
0.84
0.79
25.0
1.14
1.08
1.00
0.91
0.84
0.78
35.0
1.15
1.08
1.00
0.91
0.84
0.77
50.0
1.15
1.08
1.00
0.91
0.84
0.77
70.0
1.15
1.08
1.00
0.90
0.83
0.76
95.0
1.15
1.08
1.00
0.90
0.83
0.76
120.0
1.17
1.09
1.00
0.90
0.82
0.76
150.0
1.17
1.09
1.00
0.90
0.82
0.75
185.0
1.18
1.09
1.00
0.89
0.81
0.75
240.0
1.18
1.09
1.00
0.89
0.81
0.75
300.0
1.18
1.09
1.00
0.89
0.81
0.75
400.0
1.19
1.10
1.00
0.89
0.81
0.75
15 cm
30 cm
45 cm
0.78
0.81
0.85
0.88
0.68
0.71
0.77
0.81
0.61
0.65
0.72
0.76
0.56
0.61
0.68
0.73
45 cm
60 cm
0.87
0.90
0.91
0.79
0.83
0.86
0.74
0.79
0.82
0.71
0.76
0.80
C) Cables laid on racks / Trays in covered trench with having restricted air circulation, Trefoils are separated by two cable
diameter horizontally and the trays are in tiers having 30 cm distance.
No. racks / trays in tiers
0.95
0.90
0.88
0.90
0.85
0.83
0.88
0.83
0.81
0.86
0.81
0.79
0.98
0.96
0.95
0.93
0.94
0.92
0.93
0.90
23
0.98
0.96
0.93
0.92
0.95
0.93
0.90
0.89
0.94
0.92
0.89
0.88
0.93
0.90
0.87
0.86
B) Cables laid inside concrete trench with removable covers on cable trays having restricted circulation. The cables spaced
by one cable diameter and trays are in tiers spaced by 30 cm. The clearance of the cable from the wall is 25 mm.
No. of Cables per Tray
0.95
0.90
0.88
0.85
0.84
0.90
0.85
0.83
0.81
0.80
0.88
0.83
0.81
0.79
0.78
0.86
0.81
0.79
0.77
0.76
C) Cables laid on cable trays exposed to air, the cable touching and trays are in tiers spaced by 30 cm. The clearance
between the wall and the cable is 25 mm.
No. of Cables per Tray
0.84
0.80
0.75
0.73
0.80
0.76
0.71
0.69
0.78
0.74
0.70
0.68
0.76
0.72
0.68
0.66
Distance of Cables
Touching
15 cm
30 cm
45 cm
0.79
0.82
0.87
0.90
0.69
0.75
0.79
0.83
0.62
0.69
0.74
0.79
0.58
0.65
0.72
0.76
0.54
0.61
0.69
0.75
24
Distance of Cables
Touching
30 cm
45 cm
60 cm
0.88
0.90
0.92
0.94
0.82
0.84
0.87
0.89
0.77
0.80
0.84
0.87
0.74
0.78
0.82
0.85
0.71
0.76
0.81
0.84
Selection of Cables
Power Cables are generally selected considering the application. However, following
factors are important for selection of suitable cable construction required to transport
electrical energy from one end to the other.
1) Maximum operating voltage,
2) Fault Level,
3) Load to be carried,
4) Possible overloading duration & magnitude,
5) Route length and voltage drop.
6) Mode of installation considering install-lation environment such as ambient & ground
temperature chemical & physical properties of soil.
7) Flame retardant properties.
All sizes of POLYCAB PVC cables are designed to standard operating conditions in India and
abroad. The standards adopted are considering the geographical/ climatical conditions
and general applications of power for utilities, distribution and generation purposes.
The cables are manufactured conforming to Indian & International cables specifications
for PVC Insulated cables. Customer specific requirements can also be met.
25
Normal current rating of POLYCAB cable as given in the tables takes into account temporary
overloading which often occurs in use. However, to safeguard against excessive thermal damage,
it is essential that protective switchgear of a proper rating is used in circuit.
Cables laid in air or in ducts can safely be overloaded to 1.5 times the amount given in
the current rating tables for four hours provided the protective system uses a class P fuse
designed to operate at a 50% overload.
In case the protective circuit has a different fuse rating, select a cable by multiplying
the tripping current by 0.67 to arrive at a suitable size of cable. For example, for
carrying 200 amps current in the air 70 sq.mm. single core cable is suitable (current
rating is 230 amps.) This cable can therefore be overloaded to the extent of 230 x
1.5 = 345 amp. provided that the protective fuse rating is 230 x 1.5 = 345. However,
if the protective fuse rating is 400 amps. normal rating 400 x .67 = 268 amps., 95
sq. mm cable should be used. Similarly current rating for cables in the ground
can safely used for an overload factor of 1.3 for four hours. It is essential that the
protection is designed to operate at a 30% overload. In case this is different, select
a cable to carry 0.77 times the current at which protection is designed to operate.
lsh
t
378
239
10
25
50
cycle
cycle
cycle
2
3
4
5
=0.02
=0.02
=0.02 seconds seconds seconds seconds
seconds seconds seconds
169
107
75.7
53.0
43.6
37.8
34.0
Example : Short circuit rating of 150 sq.mm. conductor area with a short circuit duration of
0.5 seconds = 150 x 107 = 16050 amps.
26
lsh
t
Dos
Donts
Cable reels should be stored on hard surfaces resting on the flanges edge (flanges
vertical). Align reels flange to flange and,
if possible, arrange so that first in is first
out.
27
E. RECOMMENDED MINIMUM
BENDING RADIUS FOR HEAVY
DUTY CABLES.
Single Core : 20 x D
Multicore : 15 x D
F. RECOMMENDED SA F E
PULLING FORCE WI T H
STOCKINGS:
a) For Unarmoured Cable : P = 5 D2
b) For Armoured Cable
: P = 9 D2
28
P r o d u c t
R a n g e
PVC INSULATED
HEAVY DUTY CABLES
1100 V.
9001:2008
14001:2004
OHSAS
18001:2007
Tel.
Fax
E-mail : enquiry@polycab.com
Website : www.polycab.com
Jan 2012
IS 1554 (Part I)