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