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Oil Distribution Transformers
Our liquid immersed transformers for Europe are manufactured according to European Regulation Nº548 / 2014 with low losses (ecodesign), thus offering our customers high energy efficiency transformers.
Our Engineering Department designs and calculates our distribution transformers for both Europe and the rest of the world, which are subsequently manufactured using our technological means throughout the entire production process and final tests. All materials used in the manufacture of transformers pass strict quality controls before thier use, to ensure the maximum reliability and safety of the final product.
Distribution transformers in dielectric liquids are approved by numerous Electric Companies throughout the world. Obtaining these approvals and certifications along the trajectory of IMEFY has implied significant investments in technological equipment, at all levels, in a significant way.
Productive capacity:
10.000
units/year
Technical specifications
| Voltage | from 6 kV to 72.5 kV |
| Power | from 25 kVA to 5MVA |
According to national and international regulations in force.
Main applications
| Service sector (Hospitals, Hotels, Schools, Shopping Centers, etc.) |
| Infrastructures (Airports, Military Installations, Ports, etc.) |
| Industrial sector (Chemical Industries, Paper Factories, Silos, etc) |
| Agricultural sector (Agricultural Industry, Machinery, Lighting, etc.) |
| Elevation of energy (wind farms, photovoltaic, hydroelectric power stations, etc.) |
| Traction (Railways, Trams, etc.) |
| Maritime (Cruises, Offshore Platforms, etc) |
I-TRAFO TRANSFORMERS
REGULATING TRANSFORMERS
Normally, in distribution networks, unregulated transformers are used which, under load, cannot react to voltage changes. With the help of on-load switches, these rigid distribution transformers are converted into regulating transformers that maintain a stable voltage in public, industrial and private distribution networks. They compensate for fluctuations in the medium voltage and react dynamically to changes in supply and load at the low-voltage level.
This not only opens up new possibilities for power supply companies, but industrial companies or operators of wind and solar power plants also benefit from distribution network transformers that are regulated with on-load switches (which can be manufactured with up to 17 positions).
i-Trafo combines to perfection the Maschinenfabrik Reinhausen ECOTAP® VPD® system and Imefy’s expertise to provide an optimal energy transformation service at all times, solving the different problems related to the transformation and supply of energy anywhere in the world.
SOIT TRANSFORMERS
DIELECTRIC LIQUID IMMERSED TRANSFORMERS FOR SOLAR FARMS
Normally the windings connected to the inverter circuit are not grounded. The grounded electrostatic shield placed between the primary and secondary windings is placed to prevent capacitive coupling of these windings.
The main advantage of this screen is to minimise the possible transfer of high frequency disturbances (harmonics, pulses, surges occurring in the inverter) from the primary winding (B.T.) to the secondary winding (A.T.) and into the power grid.
The other advantage of the electrostatic screen is to reduce the transfer of high voltage transient overvoltages to the primary winding(s) (B.V.) and the inverter connected to this primary winding. Without the electrostatic screen a high percentage of high voltage transients in the secondary winding (A.T.) could be transferred to the primary winding (B.T.) of the transformer.
In addition, the electrostatic screen acts as an additional filter dU/dt. The electrostatic screen can be made of either aluminium or copper, and when fitted to transformers it must be grounded at only one point. At the customer’s request an insulator can be fitted to the cover with the screen connected internally to earth through this insulator, rather than internally.
