Resistance welding transformers
New single-phase AC, three-phase DC and MFDC transformers designed and built in house, plus rebuilds, remanufacturing and repairs on all welding transformers.
- 15 to 1200 KVA
- Single-phase AC
- 250 to 2000 KVA
- Three-phase DC
How they are built
Water-cooled, for high efficiency and low impedance. Stacked silicon steel cores cut energy loss. Secondaries are cast copper with water-cooling tubes brazed or cast to the outer edges.
Coils and finish
Primary coils are wound of copper ribbon, insulated between turns and double wrapped. Coils are dipped in moisture, heat and oil resistant varnish and baked twice, then the whole assembly is dipped and baked again.
Options
Various voltages and frequencies are available to meet global market requirements.
All makes
Repairs and rebuilds
Transformers are completely disassembled and inspected for damage before repair begins, then fully tested when the work is done.
- Emergency, quick turnaround repairs
- Full “new” warranty on work performed
- Engineering staff to choose the best rebuild approach
- On-site inspection by qualified technicians
- Power data engineering services
- GE Hi-Pot testing up to 10,000 volts and Biddle Megger evaluation
Automation International also holds an exclusive North American distributor agreement with EXPERT Transformatorenbau GmbH, from small single-phase AC to the largest three-phase DC and MFDC designs.
Common questions
Do you repair transformers from other makers?
Yes, repairs cover all welding transformers. Designs for Federal, Swift Ohio and A.I. Welders (Scotland) are also manufactured and repaired in house.
Is repair work warranted?
Yes. Work performed carries a full “new” warranty.
Can you handle an emergency?
Yes. Emergency, quick turnaround repairs are offered.
Get a quote: Resistance welding transformers
Prefer to talk? Call (217) 446-9500, 7:30 a.m. to 4:30 p.m. CST.
- What you need: a new machine, a rebuild, service or parts.
- The part and process: material, size and production rate.
- For parts: the machine's description, model number and serial number. Photos help.