A Transformer Coil Winding Machine is the backbone of reliable power transformer manufacturing. At Shanghai Tonglief, our DYJ series—including the advanced DYJz Automatic model—delivers precision CNC and PLC-controlled winding for HV and LV coils. Designed for 800kVA distribution transformers and smaller units, these machines operate on 3‑Phase AC380V, delivering up to 480rpm spindle speed and 130Nm torque. This guide explains why upgrading from manual winding to our automated systems improves quality, reduces copper waste, and accelerates ROI.

What is a Transformer Coil Winding Machine?

A Transformer Coil Winding Machine is a specialized industrial system engineered to wind copper or aluminum wire onto transformer bobbins with extreme accuracy. Unlike generic spooling equipment, the DYJ series supports complex geometries such as HV disc windings and LV helical windings.

Physically, the machine features a heavy-duty frame, a durable gearbox, and a precision wire guiding system. Operation begins by connecting to a 3‑Phase AC380V power supply. Once the indicator light confirms power, the operator initiates winding via a foot switch. This simplicity reduces operator fatigue while maintaining micron-level accuracy—essential for dielectric strength and thermal performance in finished transformers.

Why Choose Tonglief’s DYJ Series?

Upgrading to a CNC Coil Winding Machine solves critical manufacturing challenges:

• Precision & Consistency: ±0.01mm pitch accuracy eliminates overlapping turns and insulation gaps.
• High Efficiency: The DYJz Automatic model uses frequency conversion and stepless speed regulation to cut cycle times by up to 40%.
• Stable Tension: Dynamic tension control prevents wire deformation, even with fine wires like AWG38.
• OEM Flexibility: Store multiple winding programs for quick changeovers between HV and LV coils.

DYJz Automatic Wire Guiding and Winding Machine: Technical Deep Dive

The DYJz is Tonglief’s flagship Automatic Coil Winding Machine. Key specifications include:

• Power: 6.65Kw
• Spindle Speed: Up to 480rpm (standard models up to 398rpm)
• Torque: 130Nm for heavy-duty winding
• Control: PLC/CNC with HMI interface
• Transmission: Low-noise, stable gearbox
• Operation: Foot-switch start, automatic layer pause for insulation

In real production—such as an 800kVA distribution transformer plant—the DYJz automatically coordinates spindle rotation with transverse wire guiding. Pneumatic brakes maintain constant back-tension during foil winding. Customers report up to 12% copper savings after switching from manual systems.

Pricing & Models

Tonglief offers scalable solutions:

• High & Low-Voltage Winding Machine: US $3,700 – $5,000 / set
• DYJz Automatic Wire Guiding and Winding Machine: US $12,100 – $18,300 / set

All machines are built for 24/7 industrial operation and supported by Shanghai-based engineering teams.

FAQ

Q: Can the machine handle both copper and aluminum wires?
A: Yes. The DYJ series supports both conductors across various diameters.

Q: What after-sales support is available?
A: We provide installation guidance, operator training, and spare parts supply globally.

Conclusion

Investing in a Transformer Coil Winding Machine from Tonglief means choosing precision, durability, and efficiency. Whether you need a semi-automatic unit or a fully automated CNC system, our DYJ series delivers measurable ROI.

Ready to upgrade? Contact Mr. Lee, Export Manager, to request a quotation, download specifications, or schedule a live demo.