power transformer winding machine

For 20 years, our transformer wire winding technology team has worked closely with over 60 transformer manufacturers worldwide to develop wire winding equipment for medium-voltage/distribution transformers and high-voltage transformers. BEST™ technology team can configure winding machines to suit specific transformer manufacturing processes, including ht transformer winding machines for medium-voltage/distribution, heavy-duty transformer winding machine and vertical transformer coil winding machines for ultra-high-voltage, large-scale transformer wire & coil winding.

BEST™ horizontal transformer winding machine series adopts a heavy-duty cast iron bed and a double-end precision support structure. While providing powerful low-speed high torque, it controls the radial runout of the winding spindle to the extreme, ensuring that every winding is perfectly sealed. It is suitable for low-voltage windings of distribution transformers and high-voltage coil windings of dry-type transformers.

BEST™ ht transformer winding machine is a core component of transformer manufacturing workshops, perfectly suited for the following transformer winding processes:

• Applicable Transformers: 10kV, 35kV, 110kV, 220kV and above large oil-immersed power transformers, high-voltage coils of large dry-type transformers, and special reactors.
• Applicable Wires: Large cross-section single-strand flat copper wire, multi-strand parallel-wound conductors, and continuously transposed (CTC) cable.
• Winding Processes: Perfectly supports efficient winding of continuous, interleaved, spiral, and segmented cylindrical windings.

To meet the automation and customization needs of different transformer factories, we offer diverse modular expansions for horizontal transformer winding machines based on standardized machinery:

• Heavy-Duty Servo Traverse System: Reduces manual intervention and improves the tightness of conductor arrangement.
• Pneumatic Tension Pay-off Stand: Supports multi-axis independent tension control, specifically designed for multi-strand winding.
• Multi-axis Unwinder: Supports unwinding of multi-strand round and multi-strand flat wires.
• Adjustable Winding Mandrel: Significantly reduces mandrel adjustment time when changing production between different coil models.

With its structural feature of aligning weight direction with axial direction, the vertical winding machine offers unparalleled stability in winding large-capacity and ultra-heavy-duty coils, making it the optimal choice for large and extra-large transformer windings.

BEST™ vertical transformer winding machine comes standard with a ring-shaped intelligent lifting operating platform that rises and falls synchronously with the winding progress in real time, ensuring the operator is always in the best line of sight and operating position. It is particularly suitable for complex processes such as tangled and continuous winding that require frequent placement of dovetail pads and conductor repositioning.

• Applicable Transformers: 110kV, 220kV, 500kV, 800kV and 1000kV ultra-high voltage/extra-high voltage large power transformers, extra-high voltage converter transformers (HVDC converter transformers), and large parallel reactors.
• Applicable Wires: Transformed conductors (CTC), multi-strand parallel-wound large-section copper flat wire.
• Exceptional Manufacturing Process: Extremely compatible with continuous winding and interleaved winding. Vertically placed insulating pads ensure extremely uniform oil channel distribution, preventing slippage and deviation.

To maximize the winding efficiency of large transformer coils, we offer the following industrial-grade expansion modules:

• Multi-Axis Pneumatic Tension Pay-off System: Designed for winding multiple flat wires and CTC transposed conductors, ensuring absolutely consistent tension across all strands.
• Hydraulic/Pneumatic Expanding Mandrel: Significantly improves the demolding speed and safety of giant coils.
• Online Wire Heating & Shaping Device: For extremely stiff, thick copper wires, preheating and softening before winding eliminates internal stress and prevents springback.