Semi-concentric strands

In semi-concentric strands, the individual wires are subject to an exact positioning, yet without an additional core wire, which ensures an all-out uniform structure.

Applications

  • Extrusion: thin-gauge coating with high-grade isolation materials

Particular benefits for our customers

  • Uniform elongation of single wires
  • Low tolerances, even in single wires (even outperforming ASTM)

Manufacturing range

  • Materials: Cu-ETP1 and Cu-OF1
  • Bare, tin-plated, nickel-plated, silver-plated
  • Left-hand lay or right-hand lay
  • Variation: soft annealed
  • Single-wire diameter: ranging from Ø 0.05 mm to Ø 0.51 mm
  • Cross-section: ranging from 0.03 mm2 to 16 mm2

Construction

The following strand constructions are possible, which depend upon the number of core wires:

2 core wires:
10-wire semi-concentric conductor
24-wire-semi-concentric conductor

calculation of 2 core wires:
2 + (2 + 6) = 10 ends
2+(2 + 6) + (2 + 6 + 6) = 24 ends …
2 + ∑n (2 + n * 6)

3 core wires:
12-wire semi-concentric conductor
27-wire semi-concentric conductor

calculation of 3 core wires:
3 + (3 + 6) = 12-ends
3 + (3 + 6) + (3 + 6 + 6) = 27 ends …
3 + ∑n (3 + n * 6)

4. Kerndrähte:
semikonzentrische Litze 14-drähtig
semikonzentrische Litze 30-drähtig

Rechnung für 4 Kerndrähte:
4 + (4 + 6) = 14-drähtig
4 + (4 + 6) + (4 + 6 + 6) = 30-drähtig …
4 + ∑n (4 + n * 6)

5 core wires
16-wire semi-concentric conductor
33-wire semi-concentric conductor

calculation of 5 core wires:
5 + (5 + 6) = 16 ends
5 + (5 + 6) + (5 + 6 + 6) = 33 ends …
5 + ∑n (5 + n * 6)