As a critical front-end equipment for enameled wire production lines, the Continuously Transposed Cable (CTC) Production Line from Sky Bluer Environmental Technology Co., Ltd (Brand: CRM) adopts an advanced “rolling + drawing” process. This precision workflow—combining die drawing, flat rolling, and multiple die drawing steps—specializes in manufacturing small-sized enamelled flat wires.
CTC assemblies consist of rectangular, film-insulated conductors (typically overwrapped with additional insulation), arranged in two side-by-side stacks. A specialized tool alternately shifts the upper-left and lower-right wires to adjacent stacks, ensuring each conductor occupies every possible position within a single cycle. The length of one complete transposition cycle is determined by the transformer winding diameter, number of strips, and individual strip dimensions.
1. Production Line Composition
The CTC production line features a continuous, automated workflow designed for consistency and efficiency:
Hydraulic Reversing Pay-off Stand → Wire Drawing Machine → Inlet Wire Guide Position → Strip Rolling Mills → Dancers #4 → Online Automatic Measuring Instrument → On-line Polishing → Straightening Device → Wire Take-up Machine
2. Core Technical Specifications
| Parameter | Details |
| Designed Speed | 350 m/min |
| Product Shapes | Flat wire, flat wire with natural angle, rectangular wire, square wire, round wire |
| Input Material | Copper Rod (Anaerobic or Hypoxic) |
| Input Size | Calculated based on final product dimensions |
| Size Ranges | – Width: 3.20 – 12.80 mm: 1.00 – 3.80 mm3.20 – 40 mm² Width/Thickness Ratio: 2.0 – 8.5 |
| Take-up Weight Limit | 2.5 Ton |
| Compliance Standards | – NEMA: MW 36-C, MW 87-C 60554-3-5 (Cellulose Paper), 60641 (Press Board), 60317-18, 60317-29 33597 |
3. Key Features & Advantages
The CRM CTC Production Line integrates advanced technology and high-quality components to deliver superior performance:
(1) Precision Power & Tension Control
- Host motor with stepless speed regulation (5-50 RPM, adjustable arbitrarily).
- Independent power and controllers for wire drawing, flattening, and secondary drawing processes.
- PLC-controlled pneumatic rod scale: Automatically detects resistance value changes, triggering the frequency converter to adjust motor speed—ensuring stable tension rods, uniform wire diameter, and optimal tension throughout production.
(2) Efficient Pay-off & Forming
- Pay-off method: Round single-drawing die for precise wire drawing.
- Wire flattening: Synchronized precision roller pressing with online two-way aurora detection for dimensional accuracy.
- Wire drawing method: Spray + immersion combination for smooth, consistent surface quality.
(3) Reliable Transmission & Components
- Whole-machine direct coupling drive for minimal energy loss and stable operation.
- High-quality core components:
- Reducer: CRM-2023 series (custom-engineered for CTC production).
- Bearings: Imported or domestic first-class brands.
- Motors, servos, and PLCs: High-standard products from reputable Chinese manufacturers.
4. Main Industrial Application Scenarios of CTC Continuously Transposed Cable Production Line
This set of professional production equipment is mainly used for pre-production processing of internal insulated conductors of large and medium-sized power transformers, high-voltage electrical equipment, new energy power distribution equipment and high-power electromagnetic power components.
The finished continuously transposed cables produced by this line can effectively reduce internal alternating current loss of large transformers, optimize internal wiring space layout, improve overall equipment energy conversion efficiency, and are widely used in power grid power transmission and distribution, industrial high-power electrical control, new energy power generation supporting and other core fields.
