• Booth: 2872


Efacec is a leading engineering company with presence in over 70 countries. Globally Efacec is focused on developing products and systems with high added-value for infrastructural sectors as Energy, Industry and Mobility.

Efacec has long experience in the United States, namely in Power Transformers (Shell and Core types), Mobile Substations and local Service.

Brands: Efacec Power Transformers and Mobile Substations


  • Shell Transformers
    SHELL-type Power Transformers
    up to 1500 MVA
    up to 525 kV (BIL 1675 kV)...

  • Power Transformers


    • Interleaved windings, composed by rectangular coils. Coils with narrow width and a large surface. All coils are interleaved between pressboard washers with the surface in contact with the coil covered with small pressboard spacers, assuring coil cooling.
    • Rectangular shape magnetic core, composed by one single steel width and assembled in horizontal position. Core totally protected by a electrostatic shield connected to earth.
    • Upper tank (bell type), assure the compression of the core and phase(s). This particular construction assures the transportation in vertical or horizontal position.
    • Possibility of construction in dissociated phases configuration – three-phase transformer formed by 3 single-phase parts connected by a common cover, which receives the bushings and the connections between phases and the on-load tap changer.350 MVA
    • 1500 MVA
    • 525 kV (BIL 1675 kV)
    • Special Transformers – Phase-Shifters/Reactors (Shunt and Series)/Traction/Furnace/Rectifiers
  • Mobile Substations
    Mobile Substations
    90 MVA; 245 kV (BIL 1050 kV)...

    90 MVA; 245 kV (BIL 1050 kV)

    Efacec Mobile Substations work as a reserve unit for energy supply, which provides:
    - High Mobility
    - Flexibility
    - Reduced costs
    - Reduced time of delivery

  • Core Transformers
    Power Transformers - Core type
    up to 350 MVA
    up to 400 kV (BIL 1425 kV)...

  • Power Transformers


    • Concentric windings formed by cylindrical coils of thin thickness and large surface. All the coils are insulated by pressboard barriers with pressboard spacers allowing the cooling by insulating mineral oil
    • Magnetic circuit with circular cross section is formed by vertical positioned sheets
    • The tightening structure of core and windings is designed to support the short circuit stress and to allow not only the active part untanking but also the lifting of the complete transformer
    • 350 MVA
    • 400 kV
    • Special Transformers – Regulation/Traction/Furnace/Rectifiers/Reactors (Shunt and Series)