About Us
Equipment Built by Engineers, for Engineers
SIDA designs and manufactures production equipment for transformer manufacturers worldwide. We serve the full workflow—from winding and core stacking to insulation machining, vacuum treatment, and busbar fabrication. Our machines are running in over 45 countries, producing power transformers, distribution units, reactors, and high-voltage apparatus that meet IEC and NEMA standards.
Jessie Feng
CEO Founder
Complete Equipment for Transformer Production
Boost Productivity with Built's Reliable Solutions
"We integrated the automatic high-voltage winding machine and expandable winding mandrel into our line during a capacity expansion. Winding efficiency for large transformer coils improved by nearly 40%. The tension control is precise and consistent, and our first-pass yield rate has climbed noticeably. Technical support responds within a day, which keeps our schedule on track."
"The servo sorting core cutting line has become a critical part of our silicon-steel processing shop. Edge quality is clean and burr-free, and the automated sorting reduces manual handling significantly. Over six months of continuous running, the repeatability has held up well, which matters a lot for our stacked-core tolerance specs."
"Since adding the CNC step-pad block machining center and the multi-layer heat press, we have brought most insulation-part fabrication in-house. Parts we used to outsource with a two-week lead time are now finished in about three days. The machining accuracy and lamination pressure uniformity meet IEC-grade requirements without issue."
"We run the vacuum drying equipment in tandem with the HB-series curing oven for large transformer coils. Temperature distribution is even across the chamber, and the HA-series energy-saving dipping-paint drying oven has made a visible dent in our monthly power consumption. The control interface is straightforward for our operators to manage batch recipes."
"The equipment lineup—from foil winding machines and core stacking tables to coil presses and drying ovens—interfaces well as a system. Commissioning support was hands-on: their technicians supervised mechanical alignment, ran trial batches with us, and trained our staff on daily calibration. It felt like a partnership rather than a one-off sale."
John Engineer
CTO
Lily Mechanic
Product Manager
Max Operator
Project Manager
