• 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.