Enamelled Copper Winding Wires
Enamelled Copper Winding Wires are the Enamel Insulated Conductors that are widely used in construction and electrical equipment.
Lumbini Vidyut Udyog makes Enamelled Wires conforming to IS:13730. In addition, enamelled wires conforming to International Standards such as the British Standards (BS), IEC, etc. are also manufactured. The Customer base comprises of companies manufacturing electrical goods, and all other industrial application wherein copper wire winding is essential.
Range of Products
| DESCRIPTION | SPECIFICATION | APPLICATION |
| Polyster Enamelled Copper Wire | IS-13730 (Part 34) | General Purpose motors, Transformers, Fan etc. |
| Modified Polyester Enamelled Copper Wire | IS-13730 (Part 3) | Special motors, Handtools, Generators, etc. |
| Polyestermide Enamelled Copper Wire | IS-13730 (Part 8) | Hermetic application and all thermal ‘H’ class equipments |
| Polyurethane Enamelled Copper Wire (Self Solderable) |
IS-13730 (Part 20) IS-13730 (Part 4) |
Telecommunication, Television and Electronic Equipments |
| Polyvinyl Acetal (PVA) Enamelled Copper Wire | IS-13730 (Part 1) | All general equipment requiring high mechanical properties. |
| Dual Coated Enamelled Copper Wire Base Coat : Polyesterimide Top Coat : Polyamide-Imide |
IS-13730 (Part 13) | Hermetic application, Special purpose motors, Refrigerators, Handtools, etc |
Enamelled Copper Winding Wires
Range and Types of Enamelled Wire Available and their Test Values as per IS : 13730 specifications for 1.0 mm wire of Grade 2 (medium covering)
| Types of Test | Polyester Part-34 |
Polyester Part-3 |
PVA Part 1 |
Polyurethane Part 4 |
Polyurethane Part 20 |
Polyestermide Part 8 |
Dual Coated Part 13 |
| Thermal Class | 130 | 155 | 105 | 130 | 155 | 180 | 200 |
| Mandrel Winding | 1 x d | 1 x d | 1 x d | 1 x d | 1 x d | 1 x d | 1 x d |
| Elongation | 30% (min) | 30% (min) | 30% (min) | 30% (min) | 30% (min) | 30% (min) | 30% (min) |
| Springiness | 41 (max) | 41 (max) | 41 (max) | 41 (max) | 41 (max) | 41 (max) | 41 (max) |
| Jerk | No loss of adhesion | No loss of adhesion | No loss of adhesion | No loss of adhesion | No loss of adhesion | No loss of adhesion | No loss of adhesion |
| Breakdown Voltage | 5 KV (min) | 5 KV (min) | 5 KV (min) | 5 KV (min) | 5 KV (min) | 5 KV (min) | 5 KV (min) |
| Cut Through | 240 °C, 18 N for 2 mins | 240 °C, 18 N for 2 mins | 170 °C, 2.24 30 mins |
170 °C, 2.24 30 mins |
200 °C, 2.24 30 mins |
300 °C, 2.24 30 mins |
320 °C, 2.24 30 mins |
| Heat Shock | 155 °C, 6 x d 30 mins |
175 °C, 2.24 30 mins |
155 °C, 1 x d 30 mins |
155 °C, 2.24 30 mins |
175 °C, 2.24 30 mins |
200 °C, 2.24 30 mins |
220 °C, 2.24 30 mins |
| Resistance at 20 °C per meter | 0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
0.02116 Ω (min) 0.02240 Ω (max) |
| Resistance to Abrasion | Min : 8.8 N Av : 10.4 N |
Min : 8.8 N Av : 10.4 N |
Min : 9.6 N Av : 11.3 N |
Min : 7.9 N Av : 9.3 N |
Min : 7.9 N Av : 9.3 N |
Min : 9.2 N Av : 10.9 N |
Min : 9.6 N Av : 11.3 N |
| Continuity of Covering | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts | 5 Faults / 30 m (max) at 1500 volts |
| SWG Range | 12 – 38 | 12 – 38 | 12 – 38 | 20 – 38 | 20 – 38 | 12 – 38 | 22 – 28
|
Diameters and Increase in diameters of Enamelled Round Winding Wires
| Nominal Concuctor Diameter | Conductor tolerance (mm) | Grade 1 | Grade 2 | Conductor resistance | |||||
| min increase (mm) | max overall dia. (mm) | min increase (mm) | max overall dia. (mm) | 20 C for 1 m (Ohms) | |||||
| SWG | mm | nominal | min | max | |||||
| 3 4 5 6 7 8 9 10 |
6.401 5.893 5.385 4.877 4.470 4.064 3.658 3.251 |
0.064 0.059 0.054 0.049 0.045 0.040 0.037 0.032 |
0.055 0.054 0.053 0.052 0.050 0.050 0.049 0.048 |
6.500 5.990 5.482 4.970 4.561 4.155 3.746 3.336 |
0.100 0.098 0.096 0.094 0.092 0.092 0.089 0.086 |
6.554 6.042 5.530 5.018 4.607 4.201 3.791 3.380 |
0.000531 0.000626 0.000750 0.000913 0.001089 0.001317 0.001626 0.002057 |
0.000520 0.000630 0.000723 0.000881 0.000105 0.001270 0.001570 0.001980 |
0.000532 0.000639 0.000765 0.000933 0.000111 0.001340 0.001660 0.002090 |
| 11 12 13 14 15 |
2.946 2.642 2.337 2.032 1.829 |
0.030 0.027 0.024 0.020 0.019 |
0.045 0.043 0.042 0.041 0.040 |
3.029 2.722 2.415 2.108 1.903 |
0.084 0.081 0.079 0.077 0.075 |
3.072 2.764 2.455 2.174 1.941 |
0.002508 0.003118 0.003985 0.005271 0.006505 |
0.00242 0.00300 0.00384 0.00507 0.00626 |
0.00256 0.00318 0.00407 0.00532 0.00664 |
| 16 17 18 19 20 |
1.626 1.422 1.219 1.106 0.914 |
0.017 0.015 0.013 0.011 0.010 |
0.039 0.038 0.035 0.034 0.034 | 1.698 1.492 1.285 1.080 0.976 | 0.073 0.071 0.067 0.065 0.063 | 1.735 1.528 1.318 1.113 1.008 | 0.008232 0.010760 0.014650 0.021080 0.026050 | 0.00742 0.01040 0.01410 0.02060 0.02528 | 0.00842 0.01090 0.01490 0.02120 0.02686 |
| 21 22 23 24 25 |
0.813 0.711 0.610 0.559 0.508 | 0.009 0.008 0.006 0.006 0.006 | 0.032 0.030 0.027 0.025 0.025 | 0.872 0.766 0.659 0.605 0.554 | 0.060 0.056 0.050 0.047 0.047 | 0.902 0.795 0.684 0.629 0.578 | 0.03293 0.04305 0.05848 0.06965 0.08434 | 0.03194 0.04175 0.05687 0.06760 0.08168 | 0.03396 0.04442 0.06017 0.07178 0.08711 |
| 26 27 28 29 30 |
0.457 0.417 0.376 0.345 0.315 | 0.005 0.005 0.005 0.005 0.004 | 0.024 0.022 0.021 0.020 0.019 | 0.501 0.458 0.417 0.382 0.349 | 0.045 0.042 0.040 0.038 0.035 | 0.523 0.480 0.435 0.401 0.367 | 0.1042 0.1252 0.1539 0.1829 0.2193 | 0.1011 0.1212 0.1487 0.1772 0.2121 | 0.1075 0.1293 1.1595 0.1888 0.2269 |
| 31 32 33 34 35 |
0.295 0.274 0.254 0.234 0.213 | 0.004 0.004 0.004 0.004 0.003 | 0.019 0.018 0.018 0.017 0.015 | 0.329 0.306 0.286 0.265 0.241 | 0.035 0.033 0.033 0.032 0.029 | 0.347 0.323 0.303 0.281 0.255 | 0.2501 0.2899 0.3374 0.3974 0.4798 | 0.2414 0.2792 0.3242 0.3809 0.4625 | 0.2592 0.3011 0.3512 0.4149 0.4978 |
| 36 37 38 39 40 |
0.193 0.173 0.152 0.132 0.122 | 0.003 0.003 0.003 0.003 0.003 | 0.014 0.013 0.012 0.011 0.010 | 0.219 0.197 0.174 0.152 0.141 | 0.027 0.025 0.023 0.021 0.019 | 0.232 0.210 0.186 0.162 0.151 | 0.5842 0.7271 0.9481 1.2496 1.4623 | 0.5618 0.6967 0.8982 1.1841 1.3811 | 0.6081 0.7596 0.9888 1.3192 1.5502 |
| 41 42 43 44 45 |
0.112 0.102 0.091 0.081 0.071 | 0.003 0.003 0.003 0.003 0.003 | 0.009 0.009 0.008 0.008 0.007 | 0.130 0.119 0.107 0.096 0.084 | 0.017 0.017 0.016 0.015 0.012 | 0.139 0.128 0.115 0.103 0.091 | 1.7354 2.0923 2.6298 3.3192 4.3167 | 1.6318 1.9574 2.4423 3.0580 3.9408 | 1.8477 2.2398 2.8348 3.6082 4.7475 |
| 46 47 48 |
0.061 0.051 0.041 | 0.002 0.002 0.002 | 0.007 0.007 0.005 | 0.074 0.062 0.050 | 0.011 0.010 0.010 | 0.081 0.068 0.056 | 5.8541 8.3794 12.9500 | 5.3272 7.6253 11.6939 | 6.3809 9.1335 14.2062 |
