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Thermocouple Cables Manufacturer


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Thermocouple Extension Cables Manufacturer
Thermocouple Compensating Cables

Special Cables

Thermocouple Extension / Compensating Cables

These thermocouple cables can also be termed as instrumentation cables, since they are used for process temperature measurement. The construction is similar to pair instrumentation cable but the conductor material is different. Thermocouples are used in processes to sense temperature and is connected to the pyrometers for indication and control. The thermocouple and pyrometer are electrically conducted by thermocouple extension cables / thermocouple compensating cables. The conductors used for these thermocouple cables are required to have similar thermo-electric (emf) properties as that of the thermocouple used for sensing the temperature. These thermocouple cables are manufactured as per IS:8784, ANSI-MC 96, 1, B.S., ENI, DIN and customers specification.


Thermocouple Extension - Compensating Cables
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Range of Thermocouple Extension / Compensation Cables

Extension Cables Conductor Material
Positive Negative
KX (NiCr/Nia)
JX (Fe/CuNi)
EX (NiCr/CuNi)
TX (Cu/CuNi)
Chromel
Iron
Chromel
Copper
Alumel
Constantan
Constantan
Constantan
Compensating Cables
KX(A)/VX(NiCr/NiaL)
SX/RX (PtRh-Pt)
Copper
Copper
Constantan
Constantan

Colour Codes as per various Standard Specifications

Standards Referred
+ve -ve Overall +ve -ve Overall +ve -ve Overall
Extension Cables
KX Yellow Red Yellow Red Green Green Brown Blue Red
JX White Red Black Red Blue Blue Yellow Blue Black
TX Blue Red Blue Red Black Black White Blue Blue
EX Purple Red Purple Red Violet Violet Brown Blue Brown
Compensating Cables
KX(A)/VX - - - Red Green Green White Blue Red
SX/RX Black Red Red White White White Blue Green

Grid FRLS and Halogen Free Cables

Test Function Specification Typical Values of FRLS Compound Typical Values of Halogen free Compound Typical values of ordinary PVC Compound
Critical Oxygen Index To determine Percentage of Oxygen required for supporting combustion of insulating material at room temperature ASTM-d-2863 More than 29% More than 29% 23%
Temperature Index To determine at what temperature normal oxygen content of 21% in air will support combustion of insulating material ASTM-D-2863 & BICC Handbook Chapter No. 6 More than 250°C More than 250°C 150°C
Smoke Density Rating (Light Transmission) To determine the visibility (Light Transmission) under Fire of Insulating Material ASTM-D-2843 More than 40% More than 80% 10-15%
Acid Gas Gas Generation To ascertain the amount of Hydrochloric Acid Gas evolved from insulation of Cables under fire. IEC-754-I Less than 20% Less than 0.5% 45-50%

Following additional test is offered on these cables :-

  1. Flammability Test
    a) IEEE383
    b) IEC 332(Part-I)
    c) IEC-332 (Part-III)
  2. Swedish Chimney Test
    a) SS 4241475

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Shielded Cables (MultiCore Flexible Shielded Cables)

Shielded Cables (Multi Core Flexible Shielded Cables) in gray, black and white colour is available with us. These cables are used to interconnect electrical measuring devices with instrument panel for measuring in engineering plants and in areas where signal transmission is distorted by electrical interference fields. Available in standard these Shielded Cables are also custom manufactured as per client's requirement.


Shielded Cables (MultiCore Flexible Shielded Cables)
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Technical Specification

Core Colours Up to 4 colour Black with white numbering + yellow/green
Sheath Colour Grey, Black and White
Conductor Annealed Bare Copper as per IS 8130
Insulating PVC Type A conforming to Is 5831
Shield Aluminum Mylar tape is wrapped, over all laid up cores along with annealed tinned copper drain wire. In case of multi pairs/triad is wrapped with Aluminium Maylortape alongwith drain wire and identification of pair/triad is done by numbered black core.
PVC Sheath Type ST-1 Conforming to IS 5831 HR, FR and FRLS sheathing can be provided as per requirement.
Rated Voltage 300 / 500 V
Test Voltage 1000 VAC. For 1 minutes.
Min. Bending Radius 16 times the overall diameter of cable
Tensile Strength 12.50 N per Sq. mm of PVC insulation and sheath.
Max. Working Temperature 70° C, also available for 85° C and 105° C as per requirement.
Max. Short Circuit Temperature 160° C
Minimum Laying Temperature -15° C
Use Is suitable for interconnection of electrical measuring devices to instrument panel or instrument. Measuring, monitoring and control in machine tool manufacturing, in plant engineering, in all places where electrical interference fields can distort a signal transmission or where interference pulses arising in the mains must be confined.


Sr. No. No. Of Core Cross sec. Sq.. mm. Dia Of Conductor Strands mm Finished Cable Dia mm(Nom.) Approx. Weight Kg/Km Max. D.C Resistance at 20 C (Ohm/km)
1 1 x 2 x 0.5 0.2 7.5 80 39
2 2 x 2 x 0.5 0.2 10.2 142 39
3 4 X 2 X 0.5 0.2 11 175 39
4 5x2x0.5 0.2 12.6 232 39
5 8x2x0.5 0.2 13.8 283 39
6 10x2x0.5 0.2 14.6 323 39
7 12x2x0.5 0.2 15.7 374 39
8 16x2x0.5 0.2 17.5 470 39
9 20x2x0.5 0.2 18.5 538 39
1 1 x 2 x 0.75 0.2 7.9 91 26
2 2x2x0.75 0.2 10.6 158 26
3 4x2x0.75 0.2 11.7 206 26
5 8x2x0.75 0.2 14.6 334 26
6 10x2x0.75 0.2 15.8 396 26
7 12x2x0.75 0.2 17 462 26
8 16x2x0.75 0.2 19 585 26
9 20x2x0.75 0.2 21.5 741 26
1 1 x 2x1.5 0.25 8.8 127 13.3
2 2x2x1.5 0.25 11.7 223 13.3
3 4x2x1.5 0.25 13.5 333 13.3
4 6x2x1.5 0.25 16 475 13.3
5 8x2x0.5 0.25 6.8 563 13.3
6 12x2x .5 0.25 19.3 782 13.3
7 16x2x1.5 0.25 22 1025 13.3
8 24x2x1.5 0.25 26.5 1506 13.3
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House Wires


House Wires

We offer Single Core house wires with PVC/HR PVC / FRLS / ZHFR Insulated Copper Conductor. These are Unsheathed House Wires in Voltage Grade upto and including 1100 Volts as per IS:694-1990.


House Wires
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Technical Specification

Nominal Cross Section Area of Conductor Sq.mm Number / Nom. Dia of wires * (Nom.) Number / mm Thickness of insulation (Nom.) mm Overall diameter Max. mm Current carrying capacity in conduit / trunking (Amps) Resistance (Max.) at 20°C Ohm / Km
PVC HR PVC FRLS ZHFR
0.75 24/0.20 0.60 2.8 7 8 7 8 26.00
1.00 14/0.30 0.70 3.2 11 13 11 13 18.10
1.50 22/0.30 0.70 3.4 13 16 13 16 12.10
2.50 36/0.30 0.80 4.2 18 20 18 20 7.41
4.00 56/0.30 0.80 4.8 24 26 24 26 4.95
6.00 84/0.30 0.80 5.6 31 36 31 36 3.30

Comparative Properties of Grid Wires

Feature Normal PVC Wire Heat Resistant HR PVC Fire Retardant FR-PVC Fire Retardant Low Smoke FRLS Zero Halogen Low Smoke
Insulation material PVC PVC Spl. PVC Spl. PVC Spl. Polymer
Insulation property Normal Good Good Good Very Good
Temperature rating 70°C 85°C 70°C 70°C 85°C
Thermal stability Normal Very good Good Good Very Good
Flame retardancy Good Good Very good Very good Excellent
Safety during burning Average Average Good Good Excellent
Requirement of Oxygen to Catch Fire (% in air) >21 >21 >30 >30 >35
Temperature required to catch fire (with 21% oxygen) Room temp. Room temp. >250°C >250°C >300°C
Visibility during cable burning (%) <20 <20 <35 >40 >80
Release of halogen Gas during burning (% by weight) <20 <20 <20 <20 Zero
Abrasion Resistance during installation Good Good Good Good Good
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Conductor

We offer conductors for usage across medium & low voltage applications. These are corrosion resistant conductors exhibiting excellent resistance in sea coast and polluted industrial areas. These are accurately hardened on surface for reducing the damage to surface during handling. They have higher Strength to Weight Ratio thus every economical as it reduces the overall cost involved in transmission lines.

All Aluminium Alloy Conductors

(Clauses 7.2.1 & 7.2.2) as per IS-398 (Part 4) - 1994
Actual area mm2 Stranding & wire dia mm Approx. Overall Dia mm Approx Mass kg/km Calculated maximum resistance at 20°C Ohms/km Approx calculated breaking load (KN)
15 3/2.50 5.39 40.15 2.3040 4.33
22 7/2.00 6 60.16 1.5410 6.45
34 7/2.50 7.5 94.00 0.9900 10.11
55 7/3.15 9.45 149.20 0.6210 16.03
80 7/3.81 11.43 218.26 0.4250 23.41
100 7/4.26 12.78 272.86 0.3390 29.26
125 19/2.89 14.45 342.51 0.2735 36.64
148 19/3.15 15.75 406.91 0.2298 43.50
173 19/3.40 17 474.02 0.1969 50.54
200 19/3.66 18.3 549.40 0.1710 58.66
232 19/3.94 19.7 636.67 0.1471 68.05
288 37/3.15 22.05 794.05 0.1182 84.71
346 37/3.45 24.15 952.56 0.0984 101.58
400 37/3.71 25.97 1101.63 0.0855 117.40
465 37/4.00 28 1280.50 0.0734 136.38
525 61/3.31 29.79 1448.39 0.0651 146.03
570 61/3.45 31.05 1573.71 0.0598 158.66
604 61/3.55 31.95 1666.00 0.0568 167.99
642 61/3.66 32.94 1771.36 0.0534 178.43
695 61/3.81 34.29 1919.13 0.0492 193.25
767 61/4.00 36 2115.54 0.0446 213.01

AAAC – HS Aluminium Alloy Stranded Conductor REC

Specification No. 33/1984
AAAC size equivalent to ACSR Nominal Al-Area Stranding and wire dia Sectional Area Approx. overall Dia Approx. Mass Calculated Resistance at 20°C maximum Approx. calculated breaking load
mm2 mm mm2 mm Kg/km Ohm/km kN
14 3/2.50 14.73 5.38 40.15 2.304 4.331
Squirrel 20 7/2.00 21.99 6.00 60.13 1.541 6.467
Weasel 30 7/2.50 34.36 7.50 94.00 0.990 10.106
Rabbit 50 7/3.15 54.55 9.45 149.20 0.621 16.044
Racoon 80 7/3.81 79.81 11.43 218.26 0.425 23.473
Dog 100 7/4.26 99.77 12.78 272.86 0.399 29.344

Aluminium Conductors, Galvanized Steel-reinforced for extra high voltages IS 398(Part 5) : 1992

(Clause 8.2.2)
Nominal Aluminium (1)mm Stranding and wire diameter Sectional area of Aluminium Total sectional area Approx overall diameter Approx mass Calculated resistance at 20°C Approx breaking load min.
Al. (2) mm Steel (3)
520 54/3.53 7/3.53 528.5 597.0 31.77 2 004 0.055 52 161.20
560 42/4.13 7/2.13 562.7 591.7 31.68 1 787 0.051 99 120.16
690 42/4.57 7/2.54 688.9 724.4 35.04 2 187 0.042 42 146.87

Stranded Aluminium Conductor Steel Reinforced (ACSR)

S-398 (Part-2) 1996
Clauses 8.21 8.2.2 and 4.3.2
ACSR Code word Conductor size sq.mm Stranding Nos/mm Stranding Nos/mm Overall diameter mm Weight kg/km Ultimate strength kN Calculated Electrical resistance at 20°C Ohm/km Copper equivalent
Al. Steel Al. ACSR ACSR Al. Steel
Moie 10 6/1.50 1/1.50 10.60 12.37 4.50 43 29 14 3.97 2.780 6
- 18 6/1.96 1/1.96 18.10 21.12 5.88 73 50 23 6.74 1.618 11
Squirrel 20 6/2.11 1/2.11 20.98 24.48 6.33 85 58 27 7.61 1.394 12
Weasel 30 6/2.59 1/2.59 31.61 36.88 7.77 128 87 41 11.12 0.9289 19
Rabbit 50 6/3.35 1/3.35 52.88 61.70 10.05 214 145 69 18.25 0.5524 32
Raccoon 80 6/4.09 1/4..09 78.83 91.97 12.27 319 216 103 26.91 0.3712 48
Dog 100 6/4.72 7/1.57 105.00 118.50 14.15 394 288 106 32.41 0.2792 64
Wolf 150 30/2.59 7/2.59 158.10 194.90 18.13 726 437 289 67.34 0.1871 96
Panther 200 30/3.00 7/3.00 212.10 261.50 21.00 974 586 388 89.67 0.1390 129
Kundah 400 42/3.50 4/1.96 404.10 425.20 26.88 1281 1116 165 88.79 0.07311 246
Zebra 420 54/3.18 7/3.18 428.90 484.50 28.62 1621 1186 435 130.32 0.06868 261
Moose 520 54/3.53 7/3.53 528.50 597.00 31.77 1998 1461 537 159.60 0.05595 322
Morkulla 560 42/4.13 7/2.30 562.70 591.70 31.68 1781 1553 228 120.16 0.05231 343

Note : (1) kN = 100,000,000 dyne = 102 kg
Note : The standard length of the conductor manufactured as per specific requirement of the customer and being supplied in non-returnable wooden drums or steel drum, quite strong, to withstand any kind of transit handlings in the erection field.
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