TMC produces low-voltage special and distribution VPI transformers with normal or reduced losses and according to customer specifications, up to 10MVA and with insulation class up to 1.1kV.

TMC designs, manufactures and test our machines according to all international standards: IEC, IEEE, CSA, UL, ANSI, NEMA, NRCan.

VPI transformers main feature:

  • aluminium or copper windings
  • class F (155°C) or class H (180°C) resin systems
  • compatibility with both indoor and outdoor installations

The most common cooling technologies are based on air, either natural or forced; and liquid, either direct or indirect, or with an AFWF heat exchanger.

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In addition, the ability to withstand short-circuit forces is verified with FEA software.

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Our products
Vacuum chamber – resin introduced under vacuum and placed under pressure to improve impregnation
Thermal class H and cooling channels make for an efficient solution
Copper or aluminium winding
Fireproof materials