Litz Wire

Determination of Winding Tension on Litz Wire

The following table shows the maximum applicable winding tension on the single litz wire strands. The maximum feasible winding tension for litz wires can be calculated by multiplying the number of single strands by the appropriate winding tension of the single strand. Regardless of this calculation, for litz wire diameters thicker than 5 mm tension limits of (420N) for hard metals and (270N) for copper and soft metals are recommended.

These values are guidelines and can deviate significantly depending on the manufacturing process.

  Cu, Cu/Ag
[mm] AWG nom. [cN] ± 20 % [cN]
0.018 53 1.6 0.3
0.019 52.5 1.7 0.3
0.020 52 1.9 0.4
0.021 51.5 2.1 0.4
0.022 51 2.3 0.5
0.023 50.5 2.5 0.5
0.024 50.5 2.6 0.5
0.025 50 2.9 0.6
0.026 50 3.1 0.6
0.027 49.5 3.3 0.7
0.028 49 3.5 0.7
0.030 48.5 4.0 0.8
0.032 48 4.5 0.9
0.035 47 5.4 1.1
0.036 47 5.7 1.1
0.040 46 70.0 1.4
0.045 45 8.8 1.8
0.050 44 10.9 2.2
0.056 43 12.4 2.5
0.060 42.5 14.3 2.9
0.063 42 15.7 3.1
0.071 41 19.8 4.0
0.080 40 24.9 5.0
0.090 39 31.1 6.2
0.100 38 38.0 8.0
0.112 37 47.0 9.0
0.120 36.5 53.0 11.0
0.130 36 62.0 12.0
0.140 35 71.0 14.0
0.150 34.5 80.0 16.0
0.160 34 91.0 18.0
0.170 33.5 101.0 20.0
0.180 33 113.0 23.0
0.190 32.5 125.0 25.0
0.200 32 137.0 27.0
0.210 31.5 150.0 30.0
0.220 31 164.0 33.0
0.230 30.5 178.0 36.0
0.240 30.5 193.0 39.0
0.250 30 209.0 42.0
0.260 30 225.0 45.0
0.270 29.5 241.0 48.0
0.280 29 259.0 52.0
0.290 29.5 276.0 55.0
0.300 28.5 295.0 59.0
0.310 28 314.0 63.0
0.320 28 333.0 67.0
0.330 27.5 353.0 71.0
0.340 27.5 374.0 75.0
0.350 27 395.0 79.0
0.360 27 417.0 83.0
0.370 26.5 439.0 88.0
0.380 26.5 462.0 92.0
0.390 26 486.0 97.0
0.400 26 510.0 102.0
0.420 25.5 560.0 112.0
0.430 25.5 586.0 117.0
0.450 25 639.0 128.0
0.470 24.5 695.0 139.0
0.480 24.5 724.0 145.0
0.500 24 783.0 157.0
Printer