Automatic Transformer Coil Winding Machine 1250kVA Auto Wire Guide 1500kg Load

The TONGLI DXJ-1250 Automatic Transformer Coil Winding Machine is a compact, fully automatic winding system developed for small and medium distribution transformer production. Unlike conventional winding lathes that rely on the operator to guide every turn, this machine pairs a programmable PLC with a servo-driven automatic wire guide, so that layer position, pitch, and tension are controlled electronically from the first turn to the last. The result is a fast, repeatable winding cycle with minimal operator fatigue.

The machine is built around a 1800 mm hardened winding axis and a rigid cast framework that holds coils up to 1500 kg and transformer ratings up to 1250 kVA. A stepless variable-frequency drive delivers smooth acceleration from 0 to 280 rpm, while an integrated foot switch and jog control let the operator reposition the coil safely. The 10-inch touchscreen stores multiple winding recipes, allowing a single operator to switch between different coil sizes and wire gauges within minutes.

• Automatic Wire Guide: A servo-driven traverse carriage lays each turn at a programmable pitch, delivering uniform, gap-free layers without manual guiding.
• CNC Layer Winding: Digital recipe control manages turns, layers, and reversals for both cylindrical and rectangular coils.
• 1250 kVA Capacity: Engineered for small and medium distribution transformers, with 1500 kg coil loading and an 1800 mm axis.
• Constant Tension Winding: Adjustable mechanical and electronic tension keeps copper and aluminium wire taut for consistent coil resistance.
• Variable Frequency Drive: Stepless 0-280 rpm with forward and reverse jog, smooth starting, and stable braking.
• Fast Recipe Changeover: Touchscreen storage of winding programs shortens setup time on mixed production lines.

The DXJ-1250 suits distribution transformer workshops, electrical equipment factories, and motor and reactor manufacturers. It winds the primary and secondary coils of dry-type and oil-immersed distribution transformers up to 1250 kVA, as well as chokes, reactors, and small power inductors. Its automatic wire guide makes it especially valuable where batches of identical coils must be produced with the same electrical characteristics and dimensional accuracy.

Each machine is assembled, test-wound, and inspected before it leaves the factory, then packed in a seaworthy plywood case with a steel-reinforced base and moisture-proof lining for safe ocean shipment. TONGLI offers a one-year warranty, free first commissioning and operator training, and lifetime spare parts supply. Remote video commissioning or on-site service is available worldwide.