Class 155 Polyester Enamelled Copper Continuously Transposed Conductor (CTC), Rectangular Strand Winding Wire for Distribution, Traction & Dry-Type Transformers, IEC 60317 Compliant
Class 155 Polyester Enamelled Copper Continuously Transposed Conductor
PRODUCT DESCRIPTION
Class 155 Polyester Enamelled Copper Continuously Transposed Conductor is manufactured from multiple high-conductivity rectangular copper strands, each individually insulated with Class 155 polyester enamel and continuously transposed along the conductor length.
The product provides a balanced combination of electrical insulation, thermal performance, mechanical strength, dimensional consistency, and winding efficiency. It is designed for transformer manufacturers requiring a reliable CTC insulation system for conventional and industrial transformer applications.
APPLICATIONS
- Power transformer windings
- Distribution transformers
- Generator transformers
- Industrial transformers
- Traction transformers
- Dry-type transformer systems
- High-current electromagnetic equipment
STANDARDS
Manufactured with reference to:
- IEC 60317
- IEC 60317-0-2
- IEC 60317-13
- IEC 60076
- Customer-specific transformer specifications
CONSTRUCTION
| Component |
Description |
| Conductor |
High-conductivity copper |
| Strand Shape |
Rectangular |
| Strand Arrangement |
Multiple parallel strands |
| Transposition |
Continuous transposition |
| Primary Insulation |
Polyester enamel |
| Thermal Class |
Class 155 |
| Surface |
Smooth and uniform |
| Overall Form |
Continuously transposed conductor |
TECHNICAL DATA
| Parameter |
Typical Requirement |
| Conductor Material |
Electrolytic copper |
| Copper Purity |
≥ 99.90% |
| Strand Shape |
Rectangular |
| Insulation Type |
Polyester enamel |
| Thermal Class |
155 |
| Strand Width |
Customized |
| Strand Thickness |
Customized |
| Number of Strands |
Customized |
| Overall CTC Dimensions |
Customized |
| Transposition Pitch |
Customized |
| Breakdown Voltage |
According to insulation grade |
| Electrical Resistance |
According to conductor size |
| Elongation |
According to applicable enamel specification |
| Adhesion |
According to applicable standard |
| Winding Compatibility |
Suitable for transformer winding operations |
FEATURES
- Class 155 thermal insulation
- High copper conductivity
- Consistent strand dimensions
- Continuous transposition
- Reduced additional winding losses
- Good mechanical strength
- Reliable enamel insulation
- Excellent winding processability
- Customized dimensions available
QUALITY CONTROL
Inspection may include:
- Copper dimensions
- Overall CTC dimensions
- Electrical resistance
- Enamel thickness
- Breakdown voltage
- Enamel adhesion
- Surface appearance
- Transposition accuracy
- Thermal performance
ORDERING INFORMATION
Specify:
- Copper grade
- Strand width
- Strand thickness
- Number of strands
- Class 155 insulation
- Insulation thickness
- Overall CTC dimensions
- Transposition pitch
- Coil length
- Packaging requirements
Q&A
Q: What does Class 155 mean?
A: Class 155 identifies the thermal class of the enamel insulation system, indicating suitability for applications requiring Class 155 thermal performance.
Q: Where is Class 155 Polyester Enamelled CTC commonly used?
A: It is commonly used in transformer windings and other electrical equipment requiring continuously transposed copper conductors.
Q: Can the conductor dimensions be customized?
A: Yes. Strand width, thickness, strand count, overall dimensions, and transposition pitch can be manufactured according to customer specifications.
Q: Is polyester enamel suitable for transformer winding applications?
A: Yes. The insulation system can be designed for transformer winding applications according to the required thermal and electrical requirements.
Q: Can different coil lengths be supplied?
A: Yes. Coil length and packaging can be customized.
Product Tags:
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Class 155 Polyester Enamelled Copper Continuously Transposed Conductor (CTC), Rectangular Strand Winding Wire for Distribution, Traction & Dry-Type Images
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