0102030405
China Suppliers Factory of Large Oil Immersed Power Transformer CTC Conductors for Enhanced Performance
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 |
| Insulation layers (please contact us if your dimension is out of the above range) | 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) |
What is the maximum number of CTC strips that can be produced?
The production scope supports CTC strips ranging from 5 to 80 conductors, including both odd and even numbers of strips, to meet a wide range of transformer winding requirements.
What are the dimensional tolerances for CTC conductors?
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. The maximum overall CTC height is 120mm and width is 26mm, both with a tolerance of ±0.05mm.
What is the recommended width-to-thickness ratio for a single CTC conductor?
The suggested width/thickness ratio (b/a) for a single conductor in the production scope is between 2.0 and 9.0. For the product description specifications, the recommended range is 2.5 < b/a < 7.5. Please contact us if your dimensions fall outside these ranges.
What types of insulation are available for CTC products?
Multiple insulation options are available, including paper insulation, PET film insulation, and special bonded configurations. Products are offered with polyvinyl acetal enamel, polyvinyl-adhesive acetal enamel, polyesterimide enamel, and polyvinyl alcohol enamel coatings depending on application requirements.
What is the recommended enamel 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.
Are composite CTC configurations available for special applications?
Yes. In addition to standard CTC products, composite configurations are available, including Composite CTC with step and Composite CTC with screen wire inside, to accommodate specialized transformer design requirements.