Continuously transposed cable or Continuously transposed conductor consist some bundles of round and rectangular enameled copper wire made into a assembly and usually covered other insulation like paper, polyester film etc.
How CTC are made?
Advantage of CTC
Compared to the conventional paper insulated conductors, they offer the following advantages:
1.Shortened winding time for the coil transformer.
2.Decreased size and weight of the transformer, and reduce the cost.
3.Reduced eddy and circulating current losses.
4.Excellent coil performance and simplified winding processing
5.Improved mechanical strength of winding. (Hardened self-bonding CTC)
Insulation of CTC
Kraft papers
22HCC Dennison paper
High density paper
Thermally up-graded papers
Crepe papers
Nomex papers
Polyester film (PET) Papers with epoxy resin
Glass woven Polyester Mesh
Others
Quality Control
Continuously transposed conductors are used in electrical machines at a very high cost per unit. For this reason the quality is strictly controlled during the entire production,e.g.
Bare wire drawing Continuous monitoring of dimensions surface condition geometry
Enameling Dielectrics surface conduction
Transposing Accuracy of transpositions
insulation between strands
Production Range
Round CTC
Max.Strand Min.Size
39 3.00*1.00
49 4.00*1.20
63 5.00*1.20
Rectangular CTC
Item Single Rectangular CTC Rectangular
Post time: Dec-11-2023