Single Layer Foil Winding Machine for LV Transformer Coils
The TRANFOVIA Single Layer Foil Winding Machine is designed for winding one copper or aluminum conductor foil layer at a time while feeding the required layer insulation. It is used for low-voltage foil coils in dry-type transformers, oil-immersed transformers and electrical reactors.
The machine combines foil unwinding, deviation correction, winding, layer-insulation feeding, welding support and hydraulic foil cutting in one coordinated production setup. Its listed operating range covers coils up to 1,000 mm in outside diameter and 1,600 mm in axial height.
Applications
- Low-voltage single-foil coils for dry-type transformers.
- Copper or aluminum LV coils for oil-immersed transformers.
- Foil windings for electrical reactors.
- Coil designs using one conductor foil layer with up to two insulation layers.
- Factories that do not require the higher combined conductor thickness of a double-foil configuration.
Main Features
- Dedicated single-foil process. The equipment is positioned for coil drawings that specify one conductor foil layer rather than a double-foil arrangement.
- Copper and aluminum compatibility. The listed range is 0.35-2.2 mm for copper foil and 0.35-2.6 mm for aluminum foil.
- Foil deviation correction. The correction system maintains lateral alignment during winding, with a stated rectification accuracy of ≤ ±0.5 mm.
- Large LV coil working range. The machine supports a maximum coil outside diameter of 1,000 mm and axial height of 1,600 mm.
- Continuously adjustable winding speed. The 0-30 r/min range supports slow setup and welding stages as well as stable production winding.
- Integrated insulation and welding support. The standard delivery includes a layer-insulation trolley, welding frame, WSME-500 argon welder and cooling-water system.
- Hydraulic foil cutting. A hydraulic coil cutter is included as an auxiliary tool for controlled foil cutting after winding.
- Practical installation and training. The equipment information states installation in approximately four hours under prepared site conditions and training for two winding-machine operators.
Technical Parameters
| Parameter |
Unit |
Specification |
| Maximum winding-coil outside diameter |
mm |
≤ 1,000 |
| Maximum coil axial height |
mm |
≤ 1,600 |
| Conducting material |
– |
Copper foil / aluminum foil |
| Copper foil thickness |
mm |
0.35-2.2 |
| Aluminum foil thickness |
mm |
0.35-2.6 |
| Number of insulation layers |
layer(s) |
2 |
| Winding speed |
r/min |
0-30, continuously adjustable |
| Rectification accuracy |
mm |
≤ ±0.5 |
| Welding speed |
m/min |
0-0.7 |
| Main motor power |
kW |
15 |
| Total installed power |
kW |
35 |
| Overall dimensions (L x W x H) |
mm |
6,000 x 5,200 x 2,000 |
Standard Configuration
- Main foil winding machine body and welding frame.
- Conductor uncoiler and layer-insulation trolley.
- Hydraulic foil cutter.
- WSME-500 argon welder and cooling-water tank/pump system.
- Square shaft with fixture (catalogue lists 60 x 60 x 1,880 mm).
- Foil-support connectors, dedicated wrench and hand tools.
- Operating instructions and welding materials.
When to Choose a Single Layer Foil Winding Machine
Choose this configuration when the approved coil design uses one conductor foil layer and the copper or aluminum thickness remains within the listed single-layer range. It is also the more focused option when the factory does not need double-foil capability and prefers the lower listed installed power and smaller equipment envelope.
A double-foil configuration should be evaluated only when the coil drawing requires two conductor foils or a combined foil thickness beyond the single-layer limit.
How to Select the Right Machine
- Transformer type, rated capacity and coil application.
- Coil drawing with inner diameter, outside diameter and axial height.
- Copper or aluminum foil width, thickness, roll diameter and roll weight.
- Insulation material, thickness, width and number of layers.
- Required welding method and lead-connection process.
- Target output per shift and expected product mix.
- Factory power supply, available floor space and material-handling route.
- Required safety guarding, documentation, FAT and acceptance criteria.
FAQ
- What is a single layer foil winding machine?
It is a transformer coil winding machine that feeds and winds one copper or aluminum conductor foil layer at a time together with the specified insulation layers.
- Which coils are suitable for this machine?
It is used mainly for low-voltage foil coils in dry-type transformers, oil-immersed transformers and electrical reactors.
- Can it process both copper and aluminum foil?
Yes. The listed thickness range is 0.35-2.2 mm for copper and 0.35-2.6 mm for aluminum.
- What is the maximum coil size?
The stated maximum outside diameter is 1,000 mm and the maximum axial height is 1,600 mm.
- How is foil alignment controlled?
A deviation-correction system compensates for lateral foil movement. The stated rectification accuracy is ≤ ±0.5 mm.
- Is welding equipment included?
The standard scope lists a welding frame, WSME-500 argon welder, cooling-water system and welding materials.
- When should a different configuration be selected?
Evaluate a double-foil system when the approved coil drawing requires two conductor foils or a higher combined conductor thickness.
