(1) Number of conductors 5-31(odd number)
(2) Conductor thickness a 0.95mm-3.15mm
Conductor width b 3.00mm-12.50mm
Continuously Transposed Conductor (CTC)
CTC of Class-120 polyvinylacetal enamelled wire wrapped with high density paper, CTC of 180-class Polyesterimide enameled wire wrapped with Nomex paper, CTC of Net coat.
Product Introduction: Continuously Transposed Cable (CTC) is a special Composite Enameled Wire with odd-numbered rectangular wires arranged side by side (B-face to B-face) in two stacks. Every wire of the CTC continuously transposes to take other wire’s position, and it is wrapped with electric insulating material..
Application: Mainly be used in manufacturing windings of transformers and reactors. The conductor material can be copper or aluminum.
Number of conductors 5-31(odd number)
Conductor thickness a 0.95mm—3.15mm
Conductor width b 3.00mm—12.50mm
Suggested width/thickness of single conductor 2-8
Max wrapping layers once- 24 layers
The minimum pitch: 7b and >45mm
Max. Height of CTC bundle 55mm
Max. width of CTC bundle 26mm
1. Conductor Resistivity
Soft copper Not more than 0.017241Ω·mm2/m
Soft aluminum Not more than 0.028000Ω·mm2/m
As to different material state, proof stress Rp0.2 of copper wire is as below
Soft <=100 N/ mm2
Semi-hard 100-300 N/ mm2
Tolerance of proof stress Rp0.2 for semi-hard copper +0-20 N/ mm2
2. Wire Classification
Class 120,155 polyvinyl acetal enameled rectangular conductors(semi-hard, self- bonding);
Class 180 polyesterimide enameled rectangular conductor (semi-hard, self- bonding);
Class 200 polyester-imide over-coated with polyamide-imide enameled rectangular conductor (semi-hard, self- bonding);
Class 220 polyamideimide enameled rectangular conductor (semi-hard, self- bonding)
Film sintering rectangular conductor;
Enameled and fiber-glass rectangular conductor;
Polyvinyl acetal (polyesterimide, polyamideimide) 0.08mm--0.11mm or 0.12—0.16mm,
generally 0.09~0.13 mm;
Self-bonding film thickness 0.03-0.05mm
According to using condition, different self-bonding coats of corresponding thermal-level could be optioned, Self-adhesive coats of two B-Surface is also available.
The coating thickness of film-sintering rectangular conductor or fiber-glass enameled rectangular conductor should be determined by the customer demand.
3. Wrapping Insulation Materials
Kraft paper, High density insulating paper , High extensible fiber paper, heat-resistant insulating paper, clupak paper, Nomex-410, and all kinds of self-adhesive paper, Non-woven polyester cloth, polyester fiber mesh belt or binding strand, and polyester film.