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ETECO F3 is a passive filter, connected in parallel, able to reduce the additional power losses caused by the high frequency conducted disturbances, starting at 2,5 kHz, inside the electrical grid in which it is installed (transformers, cables, electrical panels, electric motors, etc.)

The presence of these electrical disturbances worsens the quality of energy (Power Quality) and increases the skin effect (a phenomenon that overheats the electrical network), causing:

  • Rise of the temperature of the electrical grid (losses in form of heat)
  • Malfunctions and electronic equipment breakdowns

These electrical disturbances result in:

  • Increased usage of electricity
  • Increased maintenance
  • Reduced life cycle of all loads



ETECO F3 is a versatile and modular system, composed of one or more modules depending on the electrical grid in which it is installed.

ETECO F3 improves the quality of energy (Power Quality) in the users’ electrical network:

  • Industrial
  • Commercial
  • Institutional
  • Energy producers

It is mounted in parallel near the general and/or secondary electrical panels. For each electrical network there is an installation diagram that defines exactly:

  • Network connection nodes (electrical panels)
  • The number of modules for each node

The installation scheme is customized for each electrical grid, after a thorough site inspection.
Each installation scheme is intended to maximize the achievable energy.

Around the world, all the electrical grids receive and produce high frequency conducted disturbances


ETECO F3 is the culmination of painstaking research and experimentation. It is a band-pass filter integrating passive R-L-C components (resistors, inductors, capacitors) that have specific properties able to maximize the savings that can be achieved.

The filtering starts at 2.5 kHz and intervenes on the following disturbances:

  • Oscillatory transient overvoltages
  • Electromagnetic interference (high order harmonics)

The filtering takes place without discharging to the ground and, therefore, without creating ground loops. This makes ETECO F3 unique on the market.

These conducted disturbances are generated by electronic equipments that are present in all the electrical grids. These noises are, in fact, increasing as a result of the presence of more and more digital grids (Industry 4.0 and Smart Grids). ETECO F3 is a system that can be installed in any electrical grids in the world.


ETECO F3 allows to improve the efficiency of the electrical grid in which it is installed (transformers, cables, electrical panels and electric motors).

ETECO F3 allows to save on the energy usage (kWh) reducing power losses such as heat, with a short payback period and no scrapping of any equipment or machinery.

ETECO F3, in addition, protects the health and safety of people who are exposed to harmful electromagnetic fields (EMF) generated by such interference.

ETECO F3 is an innovative system that allows to save energy (KWh) by improving power quality.


ETECO F3 is a system with a patent application for industrial invention.

Title: Passive filter for the reduction of high frequency electrical noise for power distribution networks

Patent application number: 102018000009853

Date: October 29, 2018


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