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

TECHNICAL DATA

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.

Shanghai Morn Electric Equipment Co., Ltd. (Stock Code: 002451) was founded in 1997 and listed on the Shenzhen Stock Exchange in 2010. With over 20 years of experience, Morn Electric has developed into an integrated cable manufacturer specializing in Magnet Wire and Specialty Cables.

Our products serve a wide range of industries, including power, renewable energy, industrial automation, advanced equipment, rail transportation, and petrochemical applications.

Morn Electric operates manufacturing facilities in Shanghai Lingang, Yangzhou, Jiangsu, and Thailand, providing flexible production capacity and an integrated supply chain for global customers.

Driven by continuous R&D and quality management, Morn Electric has established a comprehensive certification system including ISO 9001, ISO 14001, ISO 45001, UL, TÜV, CE, CRCC, IATF 16949, and CNAS.

With a focus on reliable products, technical innovation, and global service, Morn Electric is committed to delivering high-quality magnet wire and specialty cable solutions to customers worldwide.