• Silicon steel has been cutted and coil by high accurate speed for machine george according to transformer capacity for producting iron cores with coiling type (wound core) with five columns consist of assembles and each assemble constitute many layers of silicon steel wherever out set and end assembles with alternate method to enable coils entered inside the column iron core.
• Low voltage coils have coiled from the annealed copper strips and insulated among its layers with insulated paper with the type craft paper which non-chemical treatment for enable paper to saturation with oil to high enable degree.
• High voltage coils have coiled from copper wire insulated with varnish material. It has coiled directly on low voltage coil include less volume and given the high strong mechanical against electrodynamics forces.
• Coils have been press up and dryness by specialist machine and dry furnaces.
• Coils have been assembled with iron core in limited regions on production line with using cranes for this purpose.
• All connective copper have been assembled with off load tap changer and bushing.
Transformer has dried and outside any moisture of coils before had put it in tank.
• Active parts of transformers have been combined inside tanks after that filling it of oil inside vacuum rooms from air.
• Tank have been manufactured in the company in the complete line way for producing corrugated fins which automatic welding after that tanks have been cleaned by chemical material then coated in three layers for protection tanks from rust and changeable weather conditions.
• After ending production transformer procedures have been all routen testing according to the international specification IEC 60076 in addition of procedures some quantity testing like measuring the temperature rise and measuring the sound level of the transformers.