VPI low voltage transformers

TMC Transformers - VPI low voltage transformers

TMC manufactures special and distribution VPI transformers with normal or reduced losses to meet particular specifications, up to 10MVA and with insulation class up to 1.2kV.

VPI transformers may feature:

  • aluminium or copper windings.
  • 220 thermal class.
  • Suitability for both indoor and outdoor installations.
  • Cooling technologies: AA, FA, AA/FA, air to water heat exchanger, air to air heat exchanger, water direct and water indirect.
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We develop, produce, and test our machines according to all international standards and the Finite Element Analysis software.

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Vacuum chamber – resin introduced under pressure to improve impregnation
Cooling channels make for an efficient solution
Copper or aluminium winding
Fireproof materials
The perfect solution for low voltage transformers and inductors
Our products
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LV transformers are almost always present in manufacturing to adapt local low voltages to specific machinery or feed low-voltage converters for running motors.

VPI (vacuum pressurized impregnation) is commonly used for LV transformers.

Transformer for laser machine

  • Power: 100kVA
  • Primary Voltage: 0,4kV 60Hz
  • Secondary Voltage: 0,525kV
  • Frequency: 60Hz
  • Cooling: AA
  • Weight: 990 lbs
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VPI Transformer AF for dynamic UPS.

  • Power rating: 100kVA
  • Voltage ratio: 350/200V
  • Frequency: 400Hz
  • Weight: 280Kg
  • Enclosure: NEMA2
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VPI tansformer for offshore wind farm

Power: 125kVA

Voltage: 420 with taps (±2X2.75%) / 457 V

Frequency: 50Hz

Weight: 820Kg

Enclosure: NEMA2

Cooling: AA

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VPI Transformer for auxiliaries on board vessels.

  • Power rating: 800kVA
  • Voltage ratio: 440/400V
  • Frequency: 60Hz
  • Cooling System: AA
  • Aluminum windings + cupal plates
  • Weight: 1900kg
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An example of success:

  • Nominal power: 950kVA three-phase
  • K factor: 4
  • Frequency: 50Hz
  • Voltage: ±2 x 2,5% 400/400 V
  • Cooling: air-natural (AA)
  • Basic Impulse Level: 10kV
  • Winding Material: aluminum
  • Electrostatic Screen P/S: double, to reduce noise (EMC)
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VPI Transformer for test room variable voltage ratio and frequency.

  • Power rating: 500kVA
  • Voltage ratio: 400-480/262-314V
  • Frequency: 48-78Hz
  • Enclosure: NEMA1
  • Weight: 1750kg
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  • Voltage: 950kVA
  • Frequency: 50/60 Hz
  • Cooling: AA
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  • Voltage: 400V
  • Insulation level: 1,1/3
  • Insulation class: 180
  • Frequency: 50Hz + ripple
  • Cooling: AA

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  • Voltage: 400V
  • Insulation level: 1,1/3
  • Insulation class: 180
  • Cooling: AA
  • Frequency: 50Hz
  • Weight: 1600kg
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Voltage: 690V

Insulation class: 180

Cooling: FA

Frequency: 50Hz

Weight: 1500kg

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VPI Transformer for marine converter.

  • Power rating: 500kVA
  • Voltage ratio:440/460V
  • Frequency: 60Hz
  • Cooling System: FA
  • Aluminum windings + cupal plates
  • Weight: 1450kg
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