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G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd. Sterco Welding Machines
G.K.Enterprises (P) Ltd. G.K.Enterprises (P) Ltd.
G.K.Enterprises (P) Ltd.

G.K.Enterprises (P) Ltd.

G.K.Enterprises (P) Ltd.
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Welding Cables


G.K.Enterprises (P) Ltd.
Welding cables
Features
Applications
Welding : Designed for the secondary (high current) connection to automatic or hand - held metal arc welding electrodes. It is suitable for flexible use under rugged conditions, on assembly lines and conveyor systems, in machine tool and automatically operated line and spot welding machines
Power : Earthing/return leads, power feeds to electrolytic plating process, Busbar connection, transformers, generators, aircraft servicing equipments etc.
Construction
Conductor : High conductivity, bare annealed copper flexible conductor.
Sheath : Double sheathed with specially developed thermoplastic Elastomer (TPR/TPE), outer layer is orange coloured.
Current Rating
The maximum current ratings of flexible welding cables for different duly cycles are based on an ambient air temperature of 25 C and a maximum conductor temperature of 90 C. The percentage duly cycles for various
processes and applications are as follows
1 Automobile Welding : up to 100%
2 Semi-automatic welding : 30% to 85%
3 Manual Welding : 0% to 60%
4 Very intermittent or Occasional Welding : up to 20%
Voltage Drop
When total cable lengths in excess of 15 mtrs., are involved , it may be necessary to use cables of larger cross section to ensure that the voltage drop is not excessive and welding currents are maintained at adequate levels.
Cross - Sectional area Max. Conductor resistance at 200C Nominal Thickness of sheath Min. Overall diameter Max. Overall diameter Welding Application Non Welding Application
Duty Cycle
mm2 ohm/km mm mm mm 100% 85% 60% 30% 20% amp
amp amp amp amp amp
10 1.91 2.0 7.8 10.0 105 115 135 190 235 110
16 1.21 2.0 9.0 11.5 135 145 175 245 302 138
25 0.78 2.0 10.0 13.0 180 195 230 330 402 187
35 0.554 2.0 11.5 14.5 225 245 290 410 503 233
50 0.386 2.2 13.0 17.0 285 310 370 520 637 295
70 0.272 2.4 15.0 19.0 355 385 460 650 794 372
95 0.206 2.6 17.5 21.5 430 470 560 790 961 449
120 0.161 2.8 19.5 24.0 500 540 650 910 1118 523
150 0.129 3.0 21.5 26.0 580 620 740 1040 1297 608
185 0.106 3.2 23.0 29.0 660 715 850 1200 1476 690
240 0.0801 3.4 27.0 32.0 710 770 916 1296 1587 744
300 0.0641 3.6 30.0 35.0 800 850 1035 1450 1790 840
400 0.0486 3.8 33.0 39.0 925 1000 1195 1690 2070 970
Rating factors for variation in ambient temprature
Ambient temperature°C 20° 25° 30° 35° 40° 45° 50° 55° 60° 65°
Rating Factor 1.04 1.00 0.96 0.91 0.87 0.82 0.76 0.69 0.64 0.57



Single and Multi core flexible cables
Conductor
Flexible copper conductors are made from high conductivity Copper rods of 8 mm diameter. The rod is drawn to required sizes of fine wires for the construction of conductors of different areas of cross section. Annealed plain copper conductors used in the flexible cables. The construction of conductor is also made according to customer specification.
Insulation
'Type A' PVC Compound suitable for a maximum continuous conductor operating temperature of 70°C, as referred in IS:IS:5831/84, is insulated over conductor by extrusion process with required thickness of insulation and conforms to all the requirements of IS:IS:5831/84.
Identification of core colours
No. of cores Identification Note Other than the colours specified above can be produced against the specific requirements of the customer
Laying up
2,3,4,5 Multi core cables are laid up with right hand lay in the outermost layer in the sequence of above core colours. Interstices if required will be covered by non hygroscopic fillers
Sheath
Single core / Multicore are sheathed with 'Type ST1' PVC compound suitable for a maximum continuous conductor operating temperature of 70°C, conforming to the requirements of IS:5831/84. Unless otherwise specified the colour of the sheath will be black.
Packing
Single core / Multicore flexible cables are packed in printed carton boxes in standard lengths of 100m. However cables can also be supplied in longer lengths in strong plywood reels in multiples of 100 mts.
Customer orientation
Against specific requirement and application, WE can offer cables conforming to either customer specification or other National and International Standards
CONDUCTOR PVC INSULATION PVC SHEATH
Nominal Area in Nos. & Dia. of wire Nominal Thickness Nominal Core Dia Nominal Thickness Over All Dia
Sq. mm Nos. / mm mm mm 2 core 3 core 4 core 2 core 3 core 4 core
1.50 30/0.25 0.60 2.90 0.90 0.90 1.00 7.60 8.10 9.00
2.50 50/0.25 0.70 3.50 1.00 1.00 1.00 9.00 9.60 10.50
4.00 56/0.30 0.80 4.30 1.00 1.00 1.00 10.60 11.30 12.40
6.00 84/0.30 0.80 5.10 1.15 1.15 1.40 12.60 13.40 15.20
10.00 140/0.30 1.00 6.60 1.40 1.40 1.40 18.80 17.00 22.20
16.00 126/0.40 1.00 8.00 1.40 1.40 1.40 18.80 20.10 22.20
25.00 196/0.40 1.20 10.00 2.00 2.00 2.00 24.00 25.60 28.20
35.00 276/0.4 1.20 11.10 2.00 2.00 2.00 26.30 28.00 31.00
50.00 396/0.4 1.40 13.40 2.00 2.00 2.00 30.90 33.00 36.50
70.00 360/0.5 1.40 15.10 2.00 2.20 2.40 34.20 37.00 41.00
95.00 485/0.5 1.60 17.90 2.20 2.40 2.40 40.20 43.50 47.80
Note
The number of wires is approximate and wire diameter is nominal
They shall be so as to satisfy the requirements of conductor resistance as per
o Class 2 of IS 8130 : 1984 (For 1.5 & 2.5 sq. mm.) &
o Class 5 of IS 8130 : 1984 (For 4.0 & 6.0 sq. mm.)



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