introduction - gemscab · 2019-06-25 · is:7098 / part-2 / 1985 lt – xlpe cables cable type...

Introduction“GEMSCAB” has been associated with marketing and manufacturing of Electric Cables

for over a period 4 decades now. Customer satisfaction has been the prime focus of

“GEMSCAB” and today it has established itself as a consistence, competent and a

compatible manufacturer of Power, Control, Instrumentation and Flexible Cables.

“GEMSCAB” is proud to have succeeded in creating a pool of resources to provide

quality products and services.

“GEMSCAB” has a state-of-the-art manufacturing plant at Bhiwadi (Rajasthan) and

has been supplying cables to Industries, Process Industries, Automobile, Power

Generation, Transmission and Distribution, Housing and Commercial Projects.

“GEMSCAB” has been growing during the last 5 years at a consistent growth rate of

30% to 50% and is expected to grow further in coming years by doubling its capacities

and adding new product lines.

“GEMSCAB” has now set-up a state-of-the-art HT Cables manufacturing plant to meet

the increasing demand in infrastructure projects like Power, Steel, Cement Industries

etc. and to associate itself with the growing economy of the country.

“GEMSCAB” LT XLPE cables are being manufactured and tested at its Bhiwadi Complex.

The cables are manufactured on latest machinery and provideded with Normal PVC

Outer Sheath / FR Outer Sheath / FRLS Outer Sheath. These Cables are manufactured

as per IS:7098 / (Part-1) and as per customer specifications.

“GEMSCAB” Bhiwadi Plant is an ISO-9001:2000 certified unit, where cables are

manufactured as per National & International Standards and customers’ specifications.

A well-equipped Test Lab and modern instruments are constantly upgraded to carry

out quality checks and testing on all incoming and finished material.

“GEMSCAB” is approved by prestigious clients and consultants. It has established its

name in providing LT range of cables to its customers.

‘GEMSCAB’ LT-XLPE Cables

‘GEMSCAB’ LT-XLPE Cables are manufactured as per IS:7098 / Part-I to be suitable

for conductor temperature of 900C and short circuit capacity 2500C. ‘GEMSCAB’ LT-

XLPE Cables have excellent Mechanical, Electrical and Thermal Properties surpassing

those of conventional polymeric dielectrics. The superior properties of XLPE have

led to lower insulation thickness, high current carrying capacity, reduced weight and

dimension. ‘GEMSCAB’ LT-XLPE Cable is the economic solution for low tension power

distribution with high efficiency and total reliability.

Because of the excellent mechanical and electrical properties ‘GEMSCAB’ LT-XLPE

CABLES can be used extensively in Power Stations, Industrial Units, Projects and Power

Transmission and Distributions. They are ideally suited for Steel, Chemical, Fertilizers

& Process Industry where cables are exposed to chemical corrosion or in heavy

industries, where severe load fluctuations occur and for systems with frequent over

voltages. “GEMSCAB” LT-XLPE CABLES can also be used at higher ambient temperature

on account of their higher operating temperature. Their excellent installation properties

permit the cable to be used even under most difficult cable routing conditions and also

in cramped conditions. Single core cable due to their excellent installation properties

are used in Power Station, Sub-Station and Industrial Plants.

LT-XLPE Cables Application

Product Range

HT – XLPE CABLES

CABLE TYPE CONDUCTOR GRADE MFG. RANGE SPECIFICATION RELEVANT

HT Cables Aluminium & Copper Conductor

3.3 KV to 33 KV Single core upto 1000mm2 and Multicore upto 400 mm2 Armoured / Unarmoured

IS:7098 / Part-2 / 1985

LT – XLPE CABLES


Power Cables Aluminium & Copper Conductor

1.1 KV S/core upto 1000mm2 and Multicore upto 630mm2

IS:7098 / Part-1 / 1988

Control Cables Copper Conductor 1.1 KV Upto 61 Core IS:7098 / Part-1 / 1988

P.V.C.CABLES



1.1 KV Single core upto 1000mm2 and Multicore upto 630mm2

IS:1554/ Part-I / 1988


3.3 KV Single core upto 1000mm2 Three core upto 400 mm2

IS:1554 Part-II / 1988

Control / Railway Signalling Screened / Unscreened Cables

Copper Conductor 1.1 KV Upto 61 core IS:1554 / Part-I / 1988

Mining Cables Copper Conductor 3.3 KV Multicore upto 185 mm2 IS:1554/ Part-II / 1988

Mining Cables Copper Conductor 1.1 KV Multicore upto 185mm2 IS:1554/ Part-I / 1988

HR & FRLS Cables Aluminium & Copper Conductor

1.1 KV Single core upto 1000mm2 Multicore upto 630mm2 Control Cables upto 61 Cores

IS:1554/ Part-I / 1988

Flexible Wires & Cables Aluminium / Copper 1.1 KV Different Sizes IS:694 / 1990

Product RangeLT-XLPE CABLES

Main Features

• LT-XLPE Cables have longer life as compared to conventional PVC Cables

• LT-XLPE Cables have a higher conductor temperature rating i.e. 900C

• LT-XLPE Cables have a higher emergency overload capacity 1200C

• Max. temperature limit under short circuit conditions for LT-XLPE Cables is 2500C. Hence XLPE

Cables have higher short circuit rating

• Insulation resistance of LT-XLPE Cable is excellent & superior to Identical PVC Cables

• LT-XLPE Cables have high corrosion resistance in polluted atmosphere

• LT-XLPE Cables have better properties of resistance to chemical and corrosive gases

• LT-XLPE Cables have low installation cost because of light weight, dimensions and are far more

flexible

• LT-XLPE Cables have better properties to withstand vibrations, hot impacts

• Jointing of LT-XLPE Cables is easier and quicker

PRODUCT CODE

As per IS:7098-Part:1

CONSTITUENT CODE

Aluminium Conductor A

XLPE Insulation 2X

Round Steel Wire W

Flat Steel Strip Armour F

Double Round Steel Wire Armour WW

Double Flat Steel Strip Armour FF

Non Magnetic (AI) Round Wire Armour Wa

Non Magnetic (AI) Strip Armour Fa

PVC Outer Sheath Y

ConstructionConductor

Conductors are made from electrolytic grade aluminium /

copper conforming to IS:8130, and are Compact circular or

Compact shaped, Solid / Stranded circular.

Insulation

GEMSCAB XLPE cables use specially made from high grade

cross-linked polyethylene for insulation by extrusion process.

Core Identification

The cores are identified by different colours:

Single core Red, Black, Yellow, Blue or natural

Two core Red and Black

Three core Red, Yellow and Blue

Four core Red, Yellow, Blue and Black

Three and half core Red, Yellow, Blue and reduced neutral

core in Black.

Five core Red, Yellow, Blue, Black and Grey

Six core and above Two adjacent cores (counting and

direction core) in each layer Blue and

Yellow. Remaining cores Grey.

Core numbering & different colours

are also for control cables.

Laying up

In multicore cables, cores are laid-up as per the above colour

scheme, interstices are filled wherever necessary to make the

laid-up cores circular.

Inner Sheath

Laid-up cores are bedded over with thermoplastic material for

protection against mechanical and electrical damage.

Armouring

Armouring is provided over the inner sheath to guard against

mechanical damage. Armouring is generally of galvanised

steel wires or strips (in single core cables used in AC system

armouring is by non-magnetic hard drawn aluminium wires /

strips). Round steel wires are used where the diameter over the

inner sheath does not exceed 13 mm, flat steel strip’ armour

is used above 13 mm dia. Round wire of different sizes can be

provided against specific request.

Outer Sheath

Specially formulated heat resistant black PVC compound

conforming to the requirement to type ST2 of IS:5831-1984,

extruded to form the outer sheath. GEMSCAB XLPE also offers

a specially formulated Flame Retardant Low Smoke compound

(FRLS) for outer sheath used in fire hazardous environment.

A. Max. Conductor Temperature for continuous operaton : 90°C

B. Ambient Air Temperature : 40°C

C. Standard Ground Temperature : 30°C

D. Thermal Resistivity of Soil : 150°C Cm/Watt

E. Thermal Resistivity : 350°C Cm/Watt

F. Depth of Laying (for Cables laid direct in ground) : 75 Cm

G. Minimum Bending Radius (for Multi Core Cables) : 12D (D-Dia of Cable)

H. Max. Conductor temperature during short circuit : 250°C

I. Maximum Ambient, Air temperature : 85°C

J. Type of Installation

i. 3 Core Cable – Installed Independently

– Three cables in Trefoil

ii. Single Core Cables – Touching each other

Operating Characteristic

Flow ChartFlow Chart for manufacturing process & quality control checks for XLPE Cables conforming to IS:7098 (Part-1) 1988.

1. Test on Raw Material Stage

‘GEMSCAB’ XLPE Cables are manufactured from high

quality Raw Materials which are tested in our laboratory

strictly according to our works standards. For XLPE

Cables, the Raw Material used and tests conducted are

as under.

i. Aluminium / copper wire

Conductor resistance, wire diameter tensile strength,

annealing and wrapping test.

ii. XLPE / PVC compound

Density, tensile strength, elongation at break, volume

resistivity and shrinkage test.

iii. Steel strip / wire

Dimensions, tensile strength elongation at break,

torsion, resistivity and zinc coating test.

2. Production shop preventive test i.e. process inspection

The Process control tests are carried out at every stage

of manufacture for checking the adequate manufacturing

process, and taking necessary steps to remove any

defects.

The following are the process inspections carried out by

us for XLPE cables.

i. Conductor stranding

a. Dimensions

b. Surface and shape of conductor

c. Lay and direction of lay

d. D.C. resistance

e. No. of wires in each conductor

ii. Insulation

a. Dimension of cores

b. Thickness of insulation

c. Surface

iii. Curing

a. Temperature

b. Pressure

c. Time

d. Hot-set-test

iv. Laying up

a. Sequence of cores

b. Direction of laying up and lay

c. Circularity of cable

d. Diameter over laid up cores

e. Application of filler in the interstices

v. Inner sheath

a. Surface

b. Concentricity

c. Thickness

d. Diameter over inner sheath

vi. Armouring

a. Lay and direction of lay of armouring wire /

strips

b. No. of wires / strips

c. Uniformity of application

d. Diameter over armouring

e. Dimension of wires-strips

vii. Outer sheath

a. Thickness

b. Concentricity

c. Diameter over sheath

d. Surface

e. Embossing with requisite information on outer

sheath

3. Finished Cable Test

‘GEMSCAB’ have a well equipped air-conditioned

laboratory with state-of-the-art Testing equipment. All

routine, acceptance and type tests are conducted as per

relevant specifications and testing schemes i.e. IS:7098

Part-I amended upto date.

Quality Control System

a. Rating factors for variation in ambient air temperature

Air Temperature - ˚C 20 25 30 35 40 45 50 55 60

Rating Factors

Conductor Temp. 90°C

1.18 1.14 1.10 1.05 1.00 0.95 0.89 0.84 0.78

Rating Factors

c. Rating factors for single core cable in trefoil circuits laid on open racks in air

ArrangementNo. of racks

No. of circuits per rack

1 2 3

1

2

3

6

1.00

1.00

1.00

1.00

0.98

0.95

0.94

0.93

0.96

0.93

0.92

0.90

d. Rating factors for grouping of multicore cables laid direct in ground, in horizontal formation

SpacingDiagram

No. of cables in group

2 3 4 6 8 10

Cables touching15 cm30 cm

0.790.820.86

0.690.720.76

0.620.660.72

0.540.590.65

0.500.540.62

0.460.510.59

Rating factors for variation in ground temperature

Ground Temperature - ˚C 15 20 25 30 35 40 45 50

Rating Factors

Conductor Temp. 90°C

1.12 1.08 1.04 1.00 0.96 0.91 0.87 0.82

b. Rating factors for multicore cables laid on open racks in air

Arrangement 1No. of racks

No. of cables per rack

1 2 3 6 9

1236

1.001.001.001.00

0.980.950.940.93

0.960.930.920.90

0.930.900.890.87

0.920.890.880.86

Arrangement 2No. of racks

No. of cables per rack

1 2 3 6 9

1236

1.001.001.001.00

0.840.800.780.76

0.800.760.740.72

0.750.710.700.68

0.730.690.680.66

f. Rating factors for grouping of single core cable laid direct in ground in horizontal formation

Spacing No. of cables per rack

2 3 4 6 8 10

Cables touching 15 cm30 cm

0.780.810.85

0.680.710.76

0.610.650.71

0.530.570.64

0.480.530.60

0.450.500.58

g. Rating factors for various depths of laying (for cables laid direct in ground)

Depth of laying (mm) Upto to 25 sq. mm. above 25 sq. mm above 300 sq. mm

7590

105120150

180 or more

1.00.990.980.970.960.95

1.00.980.970.970.940.93

1.00.970.960.950.920.91

h. Rating factors for grouping of multicore cables laid direct in ground in tier formation

Spacing

Formation of cables


0.600.640.69

0.510.550.60

0.430.460.50

e. Rating factors for grouping of multicore cables laid direct in ground in tier formation

Spacing

Formation of cables


0.600.640.69

0.510.550.60

0.430.460.50

Rating Factors

j. Ruling factor for Variation in thermal resistivity of soil, three single core cables laid direct in ground (three cables in trefoil touching)

Nominal area of conductor sq. mm.

Rating Factors for value of Thermal Resistivity of Soil in 0C cm / watt

100 120 150 200 250 300

253550

7095

120

150185240

300400500

630 to 1000

1.191.201.20

1.211.221.22

1.221.221.22

1.221.241.24

1.24

1.091.091.09

1.101.101.10

1.101.101.10

1.101.111.11

1.11

1.001.001.00

1.001.001.00

1.001.001.00

1.001.001.00

1.00

0.880.880.88

0.880.880.88

0.880.880.88

0.880.880.88

0.88

0.800.800.80

0.800.800.79

0.790.790.79

0.790.790.79

0.79

0.740.740.74

0.740.740.74

0.730.730.73

0.720.720.72

0.72

i. Ruling factor for Variation in thermal resistivity of soil (multicore cables laid direct in ground)

Nominal area of conductor sq. mm.

Rating Factors for value of Thermal Resistivity of Soil in 0C cm / watt

100 120 150 200 250 300

253550

7095

120

150185240

300400500

630

1.141.151.15

1.151.151.17

1.171.181.18

1.181.191.21

1.22

1.081.081.08

1.081.081.09

1.091.091.09

1.091.101.10

1.10

1.001.001.00

1.001.001.00

1.001.001.00

1.001.001.00

1.00

0.910.910.91

0.900.900.90

0.900.890.89

0.890.890.89

0.89

0.840.840.84

0.830.830.82

0.820.810.81

0.810.810.81

0.81

0.780.770.77

0.760.760.76

0.760.750.75

0.750.750.75

0.74

Rating Factors

SINGLE CORE AL CABLES1.1 KV Single core XLPE insulated unarmoured and armoured cable with aluminium conductor conforming to IS:7098 (Part 1) 1988

Unarmoured cables Armoured cables

Single layer round wire armoured Single layer flat strip armoured

Nominal Area of

Conductor

(mm2)

Nominal thickness

of XLPE

insulation (mm)

Nominal thickness of PVC outer

Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(mm)

Nominal thickness

of XLPE

insulation (mm)

Nominal diameter

of Round Wire (mm)

Min. thickness of PVC outer

Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal thickness

of flat

strip(mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg. / Km)

101625

355070

95120150

185240

300400500

630800

1000

0.70.70.9

0.91.01.1

1.11.21.4

1.61.7

1.82.02.2

2.42.62.8

1.81.81.8

1.81.81.8

1.81.82.0

2.02.0

2.02.22.2

2.22.42.6

9.510.512.0

13.014.516.0

18.019.522.0

24.026.5

29.533.036.0

40.046.050.5

90110150

180230300

380460580

700880

107013701660

210026703310

1.01.01.2

1.21.31.4

1.41.51.7

1.92.0

2.12.42.6

2.83.13.3

1.401.401.40

1.401.401.40

1.601.601.60

1.601.60

1.602.002.00

2.002.002.50

1.241.241.24

1.241.241.24

1.401.401.40

1.401.40

1.561.561.56

1.721.881.88

11.513.014.0

15.017.019.0

22.024.025.0

28.030.0

33.038.041.0

45.551.056.0

180210260

310360450

590680810

9401150

140018002130

267033204170

---

---

0.80.80.8

0.80.8

0.80.80.8

0.80.80.8

---

---

1.401.401.40

1.401.40

1.561.561.56

1.721.881.88

---

---

21.022.524.0

26.030.0

32.035.538.5

43.048.053.0

---

---

520610730

8501050

129016001910

242036703030

TWIN CORE AL CABLES1.1 KV Twin core XLPE insulated unarmoured and armoured cable with aluminium conductor conforming to IS:7098 (Part 1) 1988



Nominal Area of

Conductor

(mm2)

Nominal thickness

of XLPE

insulation (mm)

Nominal thickness of PVC inner

Sheath (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal diameter

of Round Wire (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal thickness

of flat

strip(mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg. / Km)

10162535

507095

120

150185240

300400500630

0.70.70.90.9

1.01.11.11.2

1.41.61.7

1.82.02.22.4

0.30.30.30.3

0.30.30.40.4

0.40.50.5

0.60.60.70.7

1.81.82.02.0

2.02.02.22.2

2.22.42.6

2.83.03.43.6

16.517.019.020.0

22.025.028.031.0

33.037.041.0

44.048.054.062.0

270290340410

510670860

1050

126017002120

2560316039204910

1.401.401.601.60

1.601.602.002.00

2.002.002.50

2.502.503.153.15

1.241.401.401.40

1.401.561.561.56

1.721.882.04

2.202.362.682.84

18.018.521.023.0

25.028.031.034.0

37.040.045.0

49.052.060.066.0

610720740900

1060132017602040

236029203830

4450527069108230

--

0.80.8

0.80.80.80.8

0.80.80.8

0.80.80.80.8

--

1.401.40

1.401.401.561.56

1.721.721.88

2.042.362.522.68

--

20.021.0

23.026.029.031.0

34.037.042.0

45.050.055.063.0

--

600700

840104012801520

180022802760

3280401048205920

Dimensions & Weights

THREE & HALF CORE AL CABLES1.1 KV Three & A Half Core XLPE Insulated Unarmoured and Armoured cable with Aluminium Conductor Conforming to IS:7098 (Part 1) 1988



Nominal Area of

Conductor

(mm2)

Nominal Area of reduced neutral

conductor(mm2)

Nominal thickness

of XLPE

insulation (mm)

Min. thickness of PVC inner

Sheath (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal diameter

of Round Wire (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal thickness

of flat

strip(mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

2535

5070

95120

150185

240300

400500630

1616

2535

5070

7095

120150

185240300

0.90.9

1.01.1

1.11.2

1.41.6

1.71.8

2.02.22.4

0.30.3

0.30.4

0.40.4

0.50.5

0.60.6

0.70.70.7

2.02.0

2.02.2

2.22.2

2.42.6

2.83.0

3.43.64.0

22.023.0

27.031.0

34.037.0

42.046.0

51.056.0

65.073.082.0

510610

7901060

13601680

20202510

32103940

501062107900

1.601.60

1.602.00

2.002.00

2.002.50

2.502.50

3.153.154.00

1.401.40

1.561.56

1.561.72

1.882.04

2.202.36

2.682.843.00

25.026.0

30.035.0

38.041.0

45.050.0

55.059.0

70.079.088.0

10601210

14902070

24702960

34204470

54206390

85001003013330

0.80.8

0.80.8

0.80.8

0.80.8

0.80.8

0.80.80.8

1.401.40

1.401.56

1.561.72

1.721.88

2.042.20

2.522.683.00

23.024.0

28.032.0

35.038.0

42.047.0

52.056.0

65.074.082.0

830970

12001540

19002310

26803260

40604860

606073709210

TWIN CORE AL CABLES1.1 KV Three core XLPE insulated unarmoured and armoured cable with aluminium conductor conforming to IS:7098 (Part 1) 1988



Nominal Area of

Conductor

(mm2)

Nominal thickness

ofXLPE

insulation (mm)

Nominal thickness of PVC inner

Sheath (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal diameter

of Round Wire (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal thickness

of flat

strip(mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg. / Km)

10162535

507095

120

150185240

300400500630

0.70.70.90.9

1.01.11.11.2

1.41.61.7

1.82.02.22.4

0.30.30.30.3

0.30.40.40.4

0.50.50.6

0.60.70.70.7

1.81.82.02.0

2.02.22.22.2

2.42.62.8

3.03.23.63.8

18.018.021.022.0

26.029.033.035.0

39.043.049.0

53.059.066.073.0

250310440540

680920

11701430

176021802790

3420431053706810

1.401.601.601.60

1.602.002.002.00

2.002.502.50

2.503.153.154.00

1.241.401.401.40

1.561.561.561.72

1.882.042.20

2.362.682.843.00

20.020.523.025.0

28.032.035.039.0

43.048.053.0

57.065.072.081.0

630810940

1090

1320184021802580

303039604790

563075108860

11760

-0.80.80.8

0.80.80.80.8

0.80.80.8

0.80.80.80.8

-1.241.401.40

1.401.561.561.56

1.721.882.04

2.202.522.682.84

-19.021.023.0

26.029.033.036.0

40.044.050.0

53.060.066.074.0

-590730870

1050136016601970

236028503550

4250530064107980


FOUR CORE AL CABLES1.1 KV Four core XLPE insulated unarmoured and armoured cable with aluminium conductor conforming to IS:7098 (Part 1) 1988



Nominal Area of

Conductor

(mm2)

Nominal thickness

of XLPE

insulation (mm)

Minimum thickness of PVC inner

Sheath (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal diameter

of Round Wire (mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg / Km)

Nominal thickness

of flat

strip(mm)


Sheath (mm)

Approx. overall

diameter of

Cable (mm)

Approx. weight

of Cable

(Kg. / Km)

10162535

507095

120

150185240

300400500630

0.70.70.90.9

1.01.11.11.2

1.41.61.7

1.82.02.22.4

0.30.30.30.3

0.30.40.40.5

0.50.50.6

0.70.70.70.7

1.81.82.02.0

2.02.22.22.4

2.62.83.0

3.23.63.84.0

19.020.024.026.0

29.034.037.041.0

43.048.056.0

63.070.079.088.0

300370540680

860117015001870

230028403650

4490569070208910

1.401.601.601.60

1.602.002.002.00

2.502.502.50

3.153.154.004.00

1.401.401.401.40

1.561.561.721.88

2.042.202.36

2.522.843.003.00

20.022.526.028.0

32.037.040.044.0

47.052.060.0

68.076.086.094.0

720850

11101310

1590222027003210

415049105970

77509300

1215014600

-0.80.80.8

0.80.80.80.8

0.80.80.8

0.80.80.80.8

-1.401.401.40

1.561.561.561.72

1.882.042.20

2.362.682.843.00

-20.024.027.0

30.034.037.041.0

44.049.056.0

63.071.079.088.0

-670880

1050

1320167020702330

300036204530

547067808230

10280

Aluminium Plain Copper

Nominal Area of conductor Max. D.C. Resistance at 200C

Approx A.C. Resistance at operating Temp. 900C

Max. D.C. Resistance at 200C

Approx A.C. Resistance at operating Temp. 900C

(Sq. mm) Ohm / km Ohm / km Ohm / km Ohm / km

1.52.546

10162535

507095

120

150185240300

400500630

8001000

--

7.414.61

3.081.911.200.868

0.6410.4430.3200.253

0.2060.1640.1250.100

0.07780.06050.0469

0.03670.0291

--

9.505.91

3.952.451.5391.113

0.8220.5680.4100.325

0.2650.2120.1620.130

0.1020.0810.064

0.05260.0438

12.17.414.613.08

1.831.150.7270.524

0.3870.2680.1930.153

0.1240.09910.07540.0601

0.04700.03660.0283

0.02210.0176

15.5 9.50 5.91 3.95

2.35 1.47 0.932 0.672

0.496 0.343 0.247 0.196

0.159 0.128 0.0977 0.0781

0.0616 0.0490 0.0386

0.03170.0265


Conductor Resistance

Current Rating for 1.1 KV XLPE Insulated - Aluminium Conductor Cables - Armoured and Unarmoured

Cables in Ground Cables in Air

Nominal Area of Cross-Section

Single Core CablesTwo Core Cables

Three, Three and a half

& Four Core Cables



& Four Core Cables

Two Cables

Three Cables

Two Cables

Three Cables

AC DC AC AC AC AC DC AC AC AC

Sq. mm (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps)

10162535507095

120150185240300400500630800

1000

6990

116139162199241273305347407458518592666750833

6990

116139162199241273305347407463528602694796907

597697

116139171204231259292342384440500565629704

7191

120143167204245278315356407463528592676

--

577397

116134167199227255287333375426481537

--

6082

108136163208258303348407488569669786922

10671220

6082

108136163208258303348407488569678805958

11301329

537399

122149190235276321371447515606705823949

1076

6788

117145176221271316362420497578678786913

--

537095

117140176221258294339402461542624723

--

Current Rating for 1.1 KV XLPE Insulated - Copper Conductor Cables - Armoured and Unarmoured

Cables in Ground Cables in Air

Nominal Area of Cross-Section



& Four Core Cables



& Four Core Cables

Two Cables

Three Cables

Two Cables

Three Cables

AC DC AC AC AC AC DC AC AC AC

Sq. mm (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps) (Amps)

1.52.54.06.0

10162535

507095

120

150185240300

400500630800

1000

31415468

89116148181

213259310352

393449518583

657731823907981

31415468

89116148181

213259310352

397449527593

685778897

10271176

27364657

7697

125153

181217264296

333375434490

556620695758834

33435671

92116152180

218264314357

403453518583

658730

---

25344455

7397

125148

175213254292

325366421472

528583

---

25334455

80104139172

213271335389

447524623722

850976

113012841437

25334455

80104139172

213271335393

452524632741

8771031122914641709

22294051

7195

126158

194249307357

411479569659

769877

101311481275

29395164

88113153186

226284348402

461533633732

841967

---

22304051

7090

112148

181230284330

375434515588

677767

---

Current Rating

GEMSCAB INDUSTRIES LTD.

WORKS:SP-1192/L, Phase-IV

RIICO Industrial Area, BhiwadiDistt. ALWAR (Rajasthan)-301 019

Ph: (01493) 222752, 224815

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BRANCH OFFICES:

Representatives:Bangalore, Hyderabad, Chandigarh, Kanpur, Tatanagar, Jodhpur, Jaipur

Website: www.gemscab.com

Mumbai:903, Tulsiani Chambers

212, Nariman Point,Mumbai-400 021

Ph: (022) 22834665, 22834307Mobile: 0 9833454408Fax: (022) 22874260

E-mail: [email protected]

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Facing Erabalu Chetty Street,Madras-600 001

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