ECTC, Acetal Enamelled Copper Continuously Transposed Conductor, Enameled Wire Copper Rectangular Strand Conductor with Enamel Insulation for Power and Distribution Transformer Windings

Acetal Enamelled Copper Continuously Transposed Conductor

PRODUCT DESCRIPTION

Acetal Enamelled Copper Continuously Transposed Conductor (CTC) consists of multiple individually enamelled rectangular copper strands continuously transposed along the conductor length. The transposition distributes electrical and magnetic stresses among the individual strands, helping reduce eddy-current losses and improve winding efficiency in high-power transformers.

The enamel insulation provides reliable inter-strand electrical separation while maintaining good thermal, mechanical, and dielectric performance. This CTC design is suitable for transformer windings where compact conductor geometry, controlled insulation, and stable electrical performance are required.

APPLICATIONS

• Power transformer windings

• Distribution transformer windings

• Generator step-up transformers

• Industrial transformers

• Traction transformers

• Furnace and rectifier transformers

• High-current electromagnetic equipment

STANDARDS

Manufactured according to applicable requirements of:

• IEC 60317

• IEC 60317-0-2

• IEC 60317-13

• IEC 60317-27

• IEC 60076

• Customer-specific transformer specifications

CONSTRUCTION

TECHNICAL DATA

FEATURES

• High electrical conductivity

• Continuous and controlled strand transposition

• Reduced circulating-current losses

• Excellent dimensional consistency

• Reliable inter-strand insulation

• Good mechanical strength

• Suitable for automated and conventional winding processes

• Customizable conductor dimensions

• Suitable for high-current transformer applications

QUALITY CONTROL

Each CTC can be inspected according to customer requirements, including:

• Dimensional inspection

• Electrical resistance

• Insulation integrity

• Breakdown voltage

• Enamel adhesion

• Surface appearance

• Transposition accuracy

• Winding-form stability

ORDERING INFORMATION

Customers can specify:

• Copper grade

• Number of strands

• Strand width

• Strand thickness

• Insulation type

• Insulation thickness

• Overall conductor dimensions

• Transposition pitch

• Coil length

• Packaging requirements

• Applicable transformer specification

Q&A

Q: What is Acetal Enamelled CTC used for?
A: It is primarily used in transformer windings and other high-current electromagnetic applications.

Q: What is the main advantage of CTC?
A: Continuous transposition helps distribute current among individual strands and reduce additional losses caused by circulating and eddy currents.

Q: Can the CTC dimensions be customized?
A: Yes. Strand dimensions, strand count, transposition pitch, insulation thickness, and overall dimensions can be manufactured according to customer requirements.

Q: Can this CTC be used in oil-immersed transformers?
A: Yes. It can be designed for oil-immersed transformer winding applications with insulation systems compatible with transformer oil.

Q: Is the copper conductor individually insulated?
A: Yes. Each rectangular copper strand is enamel insulated before being assembled into the continuously transposed conductor.