The cores are wound from Grain Oriented silicon steel strip and are annealed in high vacuum furnace under protection atmosphere. The impregnation is done in vacuum impregnating equipment, low-stress and high-viscosity resin is being used. Fine polishing process of cutting surface ensures very good performance of the cores, having low core loss and high saturation. We produce 'non standard' cores to customers' specifications. Applications: Power transformer, current transducer, instrument transformer, inductor, chokes, ballast, voltage stabilizer and regulator, welding transformer, special transformer etc