China Suppliers Foil Winding Equipment for Transformers | High & Low Voltage Factory Solutions

The foil winding machine is an advanced solution designed for winding foil coils used in transformers and electrical appliances. This innovative equipment, developed by integrating technology from the United States with extensive design and manufacturing experience from our China-based factory, efficiently utilizes copper or aluminum foil of varying thicknesses as conductors. It incorporates wide insulating strips for robust interlayer insulation and narrower strips for effective end insulation, enabling a one-pass coil winding process. This machine also features capabilities for welding inner and outer leads, along with wrapping the outer surface, ensuring the production of high-quality coils essential for transformer components. As a leading supplier in the industry, we provide top-tier solutions for your winding needs

Product Description

Product Drawing

Product Drawing

Product Specification

Code SH-600 SH-800 SH-1100 SH-1400
Coil outer diameter 150-750mm 150-850mm 200-1000mm 200-1000mm
Foil width 100-600mm 150-800mm 200-1100mm 300-1400mm
Foil layers Single or double
Foil thickness Copper Cu: 0.3–2.5mm | Aluminium Al: 0.5–3.0mm
Winding speed 0-30r/min 0-30r/min 0-20r/min 0-20r/min
Max tension of foil 6000N 8000N 10000N 14000N
Welding speed 0–0.5 m/min
Correction precision ±0.5mm
Welding method TIG or cold pressure welding

Detail Display

layer insulation device
end insulation device
decoiler system 1
decoiler system 2
welding device 1
welding device 2
winding device
scissors device
touch screen

Structure

Structure

Advantages

1 Adopting motor initiative supplying tension advanced method, stable tension, there is stable tension in foil winding, stopping and foil returning. It can avoid loosen situation when the tension lost in winding.
2 Winding speed reducer is turbine shaft reducer, it can keep main shaft auto-locked whenever power on or power off status.
3 Correction system using photoelectric analog sensors, it is not meeting with foil edge, both thick and thin foil are accepted.
4 Foil tension, layer insulation tension, coil parameters, winding status and other data, all of them can be set and showed on screen, easy for operating, accurately and intuitively.
5 Equipment is controlled by PLC and touch screen, less fault of whole machine, no friction noisy, stable working, high working efficiency.

Application of Foil Winding Machine

Power Transformer Manufacturing
High-voltage power transformers: Used in 110kV and above systems, producing high-voltage windings with copper/aluminum foil.
Medium- and low-voltage distribution transformers: Suitable for 10kV and below distribution networks for urban and industrial use.
Specialty power transformers: Includes dry-type transformers (fire-resistant) and oil-immersed transformers.
Industrial Special Reactors / Transformers
Filter reactors: High-power industrial applications like steel and chemical industries to filter grid harmonics.
Rectifier transformers: For industrial production lines requiring DC power (electrolytic aluminum, electroplating).
Electric furnace transformers: Used in industrial furnaces (arc and induction) to withstand high loads.
New Energy and Energy Storage Equipment
New energy transformers: Wind turbine box transformers and photovoltaic inverter transformers.
Energy Storage Converter (PCS) Inductors: Foil windings for filter and boost inductors in energy storage systems.
Charging Pile Transformers: Compact, high-power-density foil coils for EV rapid charging.

Frequently Asked Questions

Q1. What foil materials are compatible with the SH series machines?
The SH series machines are compatible with both copper (Cu) and aluminium (Al) foils. Copper thickness ranges from 0.3 to 2.5mm, while aluminium ranges from 0.5 to 3.0mm.
Q2. What is the maximum foil width supported by the SH-1400 model?
The SH-1400 model supports a maximum foil width of 1400mm, ideal for large power and industrial transformer applications.
Q3. How does the correction system work on these machines?
It uses photoelectric analog sensors for non-contact detection of the foil edge, ensuring high precision (±0.5mm) without damaging thick or thin foils.
Q4. What welding methods are available?
The SH series supports both TIG (Tungsten Inert Gas) welding and cold pressure welding, with adjustable speeds up to 0.5 m/min.
Q5. What industries are these machines suitable for?
They are widely used in power transformer manufacturing, industrial reactors, rectifier transformers, and new energy equipment like wind/solar transformers.
Q6. How is tension controlled during the process?
Tension is maintained via a motor initiative supplying method, ensuring stability during winding, stopping, and returning to prevent loose coils.

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