3D Wound Transformer Core Coil Winding Machine

Product Introduction

The TRANFOVIA 3D wound transformer core coil winding machine is designed for 50-630 kVA oil-immersed transformer production. It combines variable-speed winding with horizontal core loading, electric core turning, forward-and-backward translation and a dedicated tension pay-off system, enabling the winding position to move around the closed wound-core structure.

Designed Around the Wound-Core Production Route

A three-dimensional wound core cannot be handled in the same way as a conventional coil wound separately on a removable mandrel. The core itself becomes part of the winding setup, so the machine must bring each winding position into alignment without repeatedly removing and reloading the core.

This machine places the wound core horizontally and combines two controlled movements: electric turning to change the working face and axial translation to move the required core section into the winding position. The spindle provides stepless variable-frequency speed control up to 320 r/min, while the tension pay-off system supports controlled conductor delivery throughout the sequence.

Four Functional Systems

1. Winding Drive The spindle uses variable-frequency stepless speed regulation with a maximum speed of 320 r/min. The m = 3 drive gear and 750 mm gear-center height define the main winding geometry.
2. Core Turning System Electric turning changes the orientation of the wound core between winding positions. A complete turning cycle takes approximately three minutes.
3. Core Translation System Forward-and-backward movement at 850 mm/min brings different sections of the core into alignment with the winding drive.
4. Tension Pay-Off System A 1,300 × 650 mm pay-off frame supplies the conductor under an adjustable setting of up to 100 N·m, helping coordinate wire delivery with core movement and spindle speed.

Application

• Oil-immersed wound-core transformers rated from 50 to 630 kVA.
• Production lines where coils are wound directly around a closed three-dimensional core structure.
• Winding processes that need controlled forward-and-backward core movement between coil positions.
• Factories developing a dedicated wound-core transformer line rather than a general-purpose heavy coil winding station.

Key Process Advantages

• Core movement is integrated into the winding process. Turning and translation reduce repeated lifting, unloading and manual repositioning between winding sections.
• Each winding position can be brought to the drive center. Axial travel helps maintain a consistent relationship between the core, conductor supply and winding gear.
• The winding speed can be matched to each process stage. Stepless frequency control allows low-speed setup and controlled acceleration when conductor placement is stable.
• The conductor supply follows a defined pay-off setting. The dedicated pay-off frame supports more controlled wire feeding while the core is translated or turned.
• The application boundary is clear. The 50-630 kVA range helps buyers evaluate whether the machine matches the intended oil-immersed wound-core transformer program.

Technical Parameters

FAQ

1. What type of transformer is this winding machine designed for?

It is designed for 50-630 kVA oil-immersed transformers using a three-dimensional wound-core structure.

2. Why does the machine need electric core turning?

A closed wound core has multiple winding positions. Electric turning changes the core orientation so the next position can be aligned with the winding drive.

3. What is the purpose of forward-and-backward core translation?

Translation moves the required section of the core into the working position without repeatedly unloading and reinstalling the core.

4. What is the maximum winding speed?

The spindle speed is continuously adjustable up to 320 r/min. The actual production speed depends on conductor size, coil diameter, insulation arrangement and winding stability.

5. How long does one core-turning cycle take?

A turning cycle takes approximately three minutes. The final cycle depends on the required turning angle and project configuration.

6. Does the machine include conductor pay-off control?

Yes. It includes a 1,300 × 650 mm tension pay-off frame with a maximum setting of 100 N·m.

7. Can this machine replace a heavy-duty horizontal winding machine?

Not in every application. This machine is selected for the wound-core process and integrated core movement, while a heavy-duty horizontal machine is selected mainly by coil weight, torque, diameter and shaft requirements.