22 01, 2020

Efficiency Benefits of DG Wound Cores

By |January 22nd, 2020|News|0 Comments

In the 1938 edition of Transactions of the American Institute of Electrical Engineers, the journal reported on a “radically” new transformer core with a “simple structure and highly efficient performance.” The article boasted that this new core “eliminates or minimizes most of the objections inherent in other [cores].” Today, wound cores continue to set impressive standards [...]

25 03, 2016

Wound Cores and the Benefits of Annealing

By |March 25th, 2016|News|0 Comments

The magnetic permeability properties of electrical steels are especially sensitive to mechanical stress. During the manufacturing processes required to form a core, steel is subjected to stresses, grain structure is damaged, and the core loss increases. For wound or formed cores, where there is a substantial amount of both plastic and elastic strain, the [...]

23 02, 2016

Why Corefficient: New DOE Regulations and the Electric Transformer Industry

By |February 23rd, 2016|News, Press Releases|0 Comments

There is a new challenge for the Transformer Industry in 2016: The US Department of Energy (DOE) has determined that higher transformer energy efficiency standards will result in significant conservation of energy. With new amendments to existing standards, electrical losses are expected to drop by about 8 percent for liquid-immersed transformers, 13 percent for [...]