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China CTC Copper Conductors for Large Oil Immersed Power Transformers - Reliable Suppliers & Factory Solutions
Production Scope
⚡ CTC strips: 5–80 (odd or even) | Max Overall Dimension: Height 120mm × Width 26mm (tolerance ±0.05mm)
Dimension of enameled wire — Single conductor:
Thickness a: 0.90–3.15mm (tolerance ±0.01mm)
Width b: 2.50–13.00mm (tolerance ±0.01mm)
Suggested width/thickness ratio of single conductor: 2.0 < b/a < 9.0
Suggested thickness of enamel insulation: 0.08–0.12mm
Thickness of bondable epoxy resin: 0.03–0.05mm
Product Scope
- Polyvinyl acetal enameled CTC with paper insulation
- Polyvinyl-adhesive acetal enameled CTC with paper insulation
- Polyvinyl-adhesive acetal semi-hard acetal enameled CTC with paper insulation
- Polyvinyl acetal enameled CTC with special binded
- Composite CTC with step
- Composite CTC with screen wire inside
- Polyesterimide enameled CTC
- Polyvinyl alcohol enameled CTC with PET film insulation
Product Description
| Number of strips | 7–49 |
| Single dimension | Thickness of conductor a: 1.00–3.15mm | Width of conductor b: 3.00–12.50mm |
| Suggested ratio of width and thickness | 2.5 < b/a < 7.5 |
| Please contact us if your dimension is out of above range — Insulation layers | 24 layers at one time |
| Max thickness of CTC | 80mm (excluding insulation) |
| Max width | 26mm (excluding insulation) |
| Max. Height of CTC bundles | 80mm (excluding paper insulation) |
| Max. Width of CTC bundles | 26mm (excluding paper insulation) |
Frequently Asked Questions
What is the maximum number of CTC strips available?
Our CTC production scope supports 5 to 80 strips, including both odd and even numbers, to accommodate a wide range of transformer winding requirements.
What are the dimensional tolerances for CTC enameled wire?
The single conductor thickness (a) ranges from 0.90–3.15mm with a tolerance of ±0.01mm, and the width (b) ranges from 2.50–13.00mm with the same tolerance of ±0.01mm.
What is the recommended width-to-thickness ratio for a single conductor?
The suggested width/thickness ratio (b/a) for a single conductor in production scope is 2.0 < b/a < 9.0. For the product description specification, the range is 2.5 < b/a < 7.5. Please contact us if your requirements fall outside these ranges.
What types of CTC wire products do you offer?
We offer a comprehensive range including polyvinyl acetal enameled CTC with paper insulation, polyesterimide enameled CTC, composite CTC with step or screen wire inside, polyvinyl alcohol enameled CTC with PET film insulation, and more — totaling 8 product types.
What is the maximum overall dimension of a CTC bundle?
The maximum height of CTC bundles is 80mm and the maximum width is 26mm, both excluding paper insulation. The overall dimension including insulation allows up to a height of 120mm and width of 26mm (tolerance ±0.05mm).
What is the recommended insulation thickness for CTC wire?
The suggested thickness of enamel insulation is 0.08–0.12mm. For bondable epoxy resin coating, the recommended thickness is 0.03–0.05mm. The system supports up to 24 insulation layers at one time.