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News by Author – Trudi Marsden

Cogent Power supports ECO design transformers

The delivery of a consistent highly efficient electrical steel is essential to maintaining high performing transformers within the grid.

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The quality of the chrome-free insulation coating we apply to our electrical steels as well as the exact tolerances we maintain, ensure that the high performance of our materials is sustained throughout their lifecycle in application.

As global demand for electricity continues to grow, so does the requirement from the power industry for products that enable electricity to be generated and transmitted more reliably and efficiently.

The broad range of grades from Cogent which include – M080-23DR, M085-23DR, M090-27DR and M095-27DR – support this requirement by enabling the production of highly efficient steel cores housed within the transformers used in energy transmission networks.

Cogent Hi-Lite

Hi-Lite is the ultimate non-oriented ultra-thin gauge electrical steel. Its unsurpassed material properties enable the development of high frequency applications with exceptional performance. Fast-forward to the “best of the best” in materials science, design support, tooling and stamping.

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Today’s high-tech electrical steels are essential in the manufacture of the cost-effective stators and rotors needed for a huge range of electric motor applications, as well as in generators and transformers. They ensure high magnetic permeability and low power losses, to secure peak performance. Power losses in electrical steels derive from several factors. Eddy currents, induced by the alternating magnetic field, play a critical role. Rolling steel to a thinner gauge confines these eddy currents to a smaller volume, reducing ‘classical’ eddy current losses. Losses can of course also be limited by increasing the silicon or aluminium content, for improved resistivity.

For application frequencies beyond the standard 50 or 60 Hz, thinner steel may be needed to maintain low losses. The Hi-Lite range, available with a Suralac®7000 insulating coating, and now also with the Suralac®9000 bonding coating, has been optimized for medium to high frequencies (200 -2500 Hz). For the most extreme applications, we have developed Hi-Lite NO 10, the thinnest wide strip electrical steel on the market.