multi foil winding machine

For 20 years, our BEST™ technical team has been deeply engaged in the low-voltage foil winding technology of “low voltage, high current” transformers. Its unique end face correction technology and foil tension balancing technology have enabled BEST™ transformer foil winding machines to occupy a 26% market share in the Chinese transformer low-voltage winding market. We are one of the high-quality Chinese suppliers for well-known global electrical manufacturers such as Siemens, Schneider Electric, and ABB.

Transformer foil winding machine is a specialized piece of equipment used in the manufacture of low-voltage foil winding for power transformers. Because it typically winds copper or aluminum foil, it is also known as a copper foil winding machine or aluminum foil winding machine. Unlike traditional transformer wire winding machine, foil winding machines change the traditional “wire winding” method, using a “face-to-face (cu/aluminum foil) winding” approach. This foil winding process effectively reduces magnetic leakage and enhances the transformer’s short-circuit withstand capability.

BEST™ transformer foil winding machines provide you with fully automated foil winding solutions. Our foil winding machines integrate micron-level ultrasonic correction, intelligent deburring, closed-loop constant tension control, and a fully automatic TIG welding system, perfectly overcoming the three major pain points in foil winding processes: “end face misalignment, air gap, and insulation breakdown,” helping your dry-type transformers easily meet the standards of top international power grids.

In the manufacturing of dry-type transformers, amorphous alloy transformers, and special low-voltage high-current equipment, the success or failure of the foil winding process directly determines the transformer’s partial discharge (PD) level and short-circuit mechanical strength.

Our technical team has broken through the mechanical limitations of traditional transformer coil winding machine that “only focuses on winding and ignores details.” We have deeply integrated micron-level sensing detection, PID intelligent algorithms, and a high dynamic response servo system to lock the production yield of the transformer’s low-voltage winding-foil winding at the highest possible level with mechanical precision.

• End face control, CCD closed-loop correction
• Dynamic PID Tension Control
• Online Deburring & Dust Extraction
• Zero-Damage Automated TIG Welding

BEST™ transformer foil winding machine can be modularly expanded on standardized equipment according to customers’ specific products and manufacturing processes, realizing flexible non-standard customization. They support heavy-duty continuous production of various complex transformer low-voltage windings to meet the non-standard customization needs of different transformer manufacturers.

• Equipment Compatibility: 10kV/35kV epoxy resin cast dry-type transformers, amorphous alloy distribution transformers, heavy-duty rectifier/electric furnace transformers, and wind power/photovoltaic new energy prefabricated substations.
• Foil Compatibility: 0.3mm – 3.0mm copper foil, 0.5mm – 3.5mm aluminum foil. Compatible with DMD insulating paper, PET film, polyimide, and other interlayer insulation materials.
• Process Support: Customized single-layer, double-layer, and four-layer foil winding systems are available, perfectly solving the synchronous processing challenges of the low-voltage side of double-split transformers.

BEST™ understands that an excellent foil winding machine must adapt to the low-voltage winding production lines of different customers, rather than making the customer’s production line compromise our equipment. Leveraging nearly 20 years of experience in low-voltage winding equipment R&D, BEST™ not only provides standard foil winding machines, but also offers 100% in-depth non-standard customization services, from mechanical structure to underlying logic.

• Foil winding system: Added multiple independent foil unwinding shafts (double-layer, triple-layer, quadruple-layer)
• Welding upgrades: TIG welding, cold pressure welding, plasma automatic welding
• Tension and control: Full servo active unwinding tension system, independent layer insulation closed-loop correction
• Automation and efficiency: Hydraulic stepless expansion and contraction mandrel, static elimination and environmental control
• Industry 4.0 & Smart Factory: MES/ERP system networking module, barcode/QR code scanning recipe system