Manufacturer of medium- and low-voltage dry-type transformers and reactors in cast resin and VPI technology
TMC Transformers SpA
Busto Arsizio (IT) · Marnate (IT) · Fabro (IT) · Bergamo (IT) · Trier (DE) · Ponte Tresa (CH) · Zaragoza (ES) · Waynesboro, GA (US) · Rosh Ha'ayin (IL) · Singapore · Cyberjaya (MY) · Bangkok (TH)New on Amplifa
About TMC Transformers
TMC Transformers develops and manufactures medium- and low-voltage dry-type transformers as well as reactors/chokes. The company masters both insulation technologies: cast resin (Cast Resin) with high mechanical strength and fire resistance, and vacuum pressure impregnation (VPI) with high thermal conductivity, lower weight and compact dimensions. At the headquarters in Busto Arsizio, dry-type transformers for demanding applications with ratings up to 25 MVA and voltages up to 52 kV are produced. In Fabro (Umbria), low-voltage dry-type transformers and reactors with direct and indirect water cooling are manufactured. The in-house metalworking facility Officine Tironi in Bergamo produces protective enclosures up to IP67 protection class. Customers include industries such as railway substations, shipping, offshore oil and gas, data centers, the steel industry, mining, renewable energies and power distribution.
- Site
- Busto Arsizio (VA), Italy
- Processes
- Manufacture of dry-type transformers (cast resin), Manufacture of dry-type transformers (VPI – vacuum pressure impregnation), Manufacture of reactors/chokes (low voltage, with direct/indirect water cooling), Manufacture of protective metal enclosures up to IP67, Short-circuit testing of traction transformers (12-pulse rectifier systems, 3880/4400 kVA, 200, H-Art180° technology (Class H insulation system with resin technology for overload and, Traction transformers for railway substations (tram, metro, locomotives, long-distance/regional, Adaptation to customer requirements and standards
- Materials
- Cast resin (Cast Resin), VPI resin (vacuum pressure impregnation), Class H insulation system (H-Art180°), Cast Resin, Vacuum Pressure Impregnation (VPI), Copper, Electrical steel, Metal (protective enclosures)
- Certificates
- Short-circuit tests (traction transformers)
- Employees
- 500
- 01
Development and engineering
- 02
Winding manufacturing (copper, electrical steel)
- 03
Cast resin/VPI impregnation
- 04
Enclosure manufacturing (Officine Tironi, metalworking)
- 05
Assembly and testing (including short-circuit tests)
- 06
Sales and logistics worldwide
Insulation Technologies & Materials
Cast Resin
Insulation technology with high mechanical strength and fire resistance for demanding operating conditions.
Vacuum Pressure Impregnation (VPI)
Resin impregnation with high thermal conductivity and lighter, more compact designs for space-restricted applications.
Class H insulation system (H-Art180°)
Proprietary resin technology for overload and harmonic operation; more than 4 times longer insulation life compared to standard designs.
Copper
Winding material for transformers and reactors.
Electrical steel
Core material for transformers and reactors.
Metal (protective enclosures)
In-house manufactured enclosures with protection class up to IP67 for indoor and outdoor applications.
Components & Products
Inside the production
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of dry-type transformers (cast resin)Engineering | – | – | 25 MVA / 52 kV | – | Cast resin, Copper, Electrical steel |
| Manufacture of dry-type transformers (VPI – vacuum pressure impregnation)Engineering | – | – | – | – | VPI resin impregnation, Insulation class H |
| Manufacture of reactors/chokes (low voltage, with direct/indirect water cooling)Engineering | – | – | – | – | – |
| Manufacture of protective metal enclosures up to IP67Assembly | – | – | – | – | Metal |
| Short-circuit testing of traction transformers (12-pulse rectifier systems, 3880/4400 kVA, 200Testing | – | – | – | – | – |
| H-Art180° technology (Class H insulation system with resin technology for overload andEngineering | – | – | – | – | Insulation class H, Resin |
| Traction transformers for railway substations (tram, metro, locomotives, long-distance/regionalEngineering | – | – | e.g. 1000 kVA, 20 / 2 x 0.585 kV | – | – |
Additional services
Reference customers
Quality
TMC Transformers manufactures according to international standards and customer-specific requirements; traction transformers successfully passed short-circuit tests on 12-pulse rectifier systems (3880/4400 kVA, 200 kV BIL). Applications in public transport infrastructure are supplied with certified solutions.
| Evidence | Busto Arsizio |
|---|---|
| Short-circuit tests (traction transformers) |
History
- 1990er
Start of over 30 years of experience in dry-type transformers; more than 100,000 transformers manufactured and sold in total
- 2022
Subsidiary Intermagnetics Srl becomes part of the Next Technology Group