Trafomec Power Supply Systems

Trafomec is a leading provider of transformers and inductances for power supply systems, offering customized, engineered, high quality solutions to ensure electrical power supply in a wide range of critical industrial applications, from power supply protection and UPS to integrated power supply solutions for conventional and renewable power generation systems.

Trafomec products are recognized worldwide for their superior design and reliability, that withstand the most critical application environments.

Power Supply Systems main applications

The PSS (Power Supply Systems) division provides transformers and inductances for power supply systems, offering customized, engineered, high quality solutions to ensure electrical power supply in a wide range of critical industrial applications, from power supply protection and UPS to integrated power supply solutions for conventional and renewable power generation systems.

  • Driver & Rotary UPS: impregnated or incorporated, air cooled medium voltage (V>1000V) transformers and reactors for drives and rotary UPS
  • Renewable energies: cast resin, air cooled medium voltage(V>1000V) transformers for distribution or photovoltaic and solar wind applications
  • Stationery UPS & LV Solar – Transformers: impregnated, air cooled low voltage transformers for static UPS and photovoltaic inverters
  • Stationery UPS & LV Solar – Reactors: impregnated, air cooled low voltage reactors for static UPS and photovoltaic inverters
Electric Vehicle Charger

Electric Vehicle chargers

Trafomec manufactures standards-compliant transformers and other components for electric vehicle charging stations.

Technology VPI dry-type
Cooling system Natural air
Conductor Material Aluminium or Copper
Insulation Voltage 3 kV or 4 kV
Reference Standards IEC or UL
Matching transformer

Solar photovoltaic

Trafomec Power Supply Systems division also specializes in renewable energies.
Pulse-width modulation transformers and chokes using VPI dry-type technology allow for reduced size and high energy efficiency.

3ph PWM Transformer
Technology VPI dry-type
Conductor Material Aluminium or Copper
Rated power 10 kVA to 110 kVA
Core High Grade
Advantages High efficiency and reduced size
Installation Inside the frequency converter
3ph PWM Choke
Technology VPI dry-type
Conductor Material Aluminium or Copper
Core High Grade
Advantages High efficiency and reduced size
Installation Inside the frequency converter
Transformers for solar thermodynamic

Solar Thermodynamic

Transformers for use with solar thermodynamic float glass panels.

1ph Float Glass Transformer
Technology VPI dry-type
Conductor Material Aluminium
Rated power 20 kVA to 75 kVA
Installation Outdoors with protection box
Transformers for wind power plants

Wind power

Trafomec is a leading manufacturer of transformers and filter chokes for installation inside wind turbines.
The absence of chemical cooling liquids in these dry-type components facilitates routine maintenance, and reduces pollution.

Step-up Transformer
Technology Cast Resin dry-type
Conductor Material Aluminium or Copper
Rated power 100 kVA to 2500 kVA
Primary Voltage 6 kV to 36 kV
Core Step Lap
Installation Inside the turbine
3ph Filter Choke
Technology VPI dry-type
Conductor Material Aluminium or Copper
Core High Grade
Advantages High efficiency and reduced size
Installation Inside the frequency converter
Mono-phase reactor

Mono-Phase reactors

The single-phase RDA reactors can be used both in DC and AC applications. In DC to limit or to filter, in combination with parallel connected capacitors, the ripple of direct current. In AC they can limit the short-circuit currents and the rate of current rise (di/dt) and they can protect semiconductor power devices and extend their operating life by limiting transient over-current.

Power rating up to 2 MVA
Max rated current 6000 A
Rated line voltage < 6000 V
Three-phase reactor

Three-Phase reactors

The function of the RTB reactors is to protect capacitors in low voltage power factor correction system because, after the connection in series with capacitors, the self-resonance frequency is well below the line harmonics.

Compensation Power Qc 6.3 - 100 kVAR
Blocking factor p% 5.67 / 7 / 14%
Rated line voltage 400 V
Mono-three phase commuting reactor

Mono-three phase reactors (commuting)

The function of these reactors is to reduce harmonics in the line current, to limit the short circuit currents, to attenuate the line voltage peaks and sags and limiting the transition currents during switching instants.

Compensation Power Qc 2 MVA
Blocking factor p% 6000 A
Voltage drop dU% 2 / 4 / 6 / 8 / 12%
Rated line voltage < 1000 V
Medium frequency reactors

Medium frequency reactors

These reactors are the future development for UPS called 'transformer-less'. On the next UPS generation there won't be transformers but the use of these reactors for filtering and smoothing will be more and more important.

Rated current 10 - 500 A
inductance up to 1 μH
Voltage drop dU% 2 / 4 / 6 / 8 / 12%
Rated line voltage < 1000 V
Rectifier transformer

Rectifier transformers

The purpose of the TRA rectifier transformers is to operate with AC/DC power converters connected to them, to adapt the power line voltage required by the load and to provide galvanic separation between load and power line.

Three Phase
Primary/secondary voltage 200 V / 500 V
With one secondary winding
Rated power up to 5 MVA
With two secondary windings
Rated power up to 5 MVA
With five limbs and two secondary windings
Rated power up to 5 MVA
Matching transformer

Matching Transformers

The purpose of these transformers is to adapt the power line voltage to the voltage required by the load and to provide galvanic separation between load and power line. They can also provide a neutral connection, that can be isolated or grounded.

Single Phase
Rated power 1.5 to 100 kVA
Primary/secondary voltage 380 V / 230 V
Three Phase
Rated power 2 to 250 kVA
Primary/secondary voltage 380 V / 230 V
Interphase Transformer

Interphase Transformers with shall care

These transformers are used to balance currents from different branches of 12 pulse rectifier, controlled and not controlled, in parallel.

Power rating 2000 kVA
inter-bridge voltage up to 6 kV
Maximum output current 12 kA
Transformer with built-in reactor

Transformers with built-in reactor

The purpose of TIN integrated transformers is to adapt the UPS converter output voltage to the line voltage required by the load and to provide galvanic separation between UPS and load. The integrated inductance, in combination with the output capacitors, operates as a filter.

Single Phase
Power Rating up to 500 kVA
Primary/secondary voltage 200 V / 230 V
Three Phase
Power Rating up to 1 MVA
Primary/secondary voltage 200 V / 400 V
Transformer with built-in reactor

Transformers with built-in reactor

The purpose of these transformers is to provide a reliable galvanic separation between load and power line. They provide protection against electric shocks or neutral connection that is isolated or grounded. The reinforced isolation and the electrostatic screen provides isolation even if the system is subject to severe atmospheric disturbance

Single Phase
Rated power 1.5 to 25 kVA
Primary/secondary voltage 230 V / 230 V
Three Phase
Rated power 2 to 40 kVA
Primary/secondary voltage 400 V / 400 V
Download PSS brochure