Most people don't realize that the "heart" of a transformer is its winding coils.
Here's a quick look at how they are made👇
🔧 Coil Winding
Copper conductors are layered using CNC winding machines, with manual alignment to ensure tight and clean winding without damaging insulation.
🧪 Quality Inspection
Visual checks + dimensional measurement + inter-turn voltage tests help detect potential defects early.
🔥 Vacuum Impregnation
In a vacuum environment, coils are dried, impregnated with insulating varnish, and cured in stages-making them more moisture-resistant, heat-resistant, and durable.
🧩 Core Assembly
Windings are installed onto a silicon steel core, aligned precisely, with cooling oil channels reserved, then tightly clamped into place.
🛢️ Vacuum Oil Filling
Insulating oil is filled under vacuum conditions, ensuring both insulation performance and heat dissipation.
⚡ Final Testing
Electrical resistance, loss, withstand voltage, and partial discharge tests are performed before delivery.
💡 A reliable transformer is not simply assembled - it is carefully built step by step.