The Magnetic core is made up from cold-rolled, grains-oriented (CRGO) and low-loss electrical silicon steel. Core steel can be in different thicknesses and qualities and are made up from high-quality silicon steel such as M3, M4, M5, MOH, ZDKH85, ZDKH95 and Amorphous steel, quality levels depending on the no-load losses requested by customer, warranted iron loses (no load losses) and applicable specifications. Being highly sensitive, all sheets used in magnetic circuit are cut and stored by CNC controlled cutting machine and magnetic circuit is formed by allocating these sheets. Cutting and allocating of magnetic circuit is handled by a method called step-lab core construction and which reduces iron losses, noise level and vibrations to the minimum level.