Periodic maintenance of Oil Immersed Transformers in its foundation or our company - Up to 420 kV System Voltage: Oily Distribution and Power Transformers can gain a lot with respect to their technical lifetimes in case their monthly, biannual, annual, two-year and five-year periodic maintenance is performed. Accordingly, the process of protective periodic maintenance is very important for transformers. Repairation of Oil Immersed Distribution and Power Transformers - Up to 36 kV: Transformers face temporary regimon many times during their operation. Protection systems protect transformers against these temporary incidents, from time against overcharge,over voltage, from time to time against short circuits. Despite this, transformers still break-down. Our firm performes the required repair of defective transformers by remaining loyal to the original there of meticulously and reliably. To make test of Oil Immersed Distribution and Power Transformers : In case our customers need it, they may request from our firm performance of site tests of their transformers. Our firm turns the site tests performed into a report and submits to our customer's attention by interpreting it if desired. Oil treatment of Oil Immersed Transformers in its foundation or our company : Oily transformers operate under different temperatures due to change of charge during operation. The heating transformer oil expands sometimes a little, sometimes much. During those times, it inhales and exhales air by means of a Humidity Remover from the Expansion Depot. No matter how much the oil performs this air inhale and exhale by means of the hu- midity remover, because of the fact that sometimes the humidity remover is full with humidity and sometimes rhe weather is very humid, it catches humidity in the long run. Moreover, under effect of it's heating also, it slowly becomes sediment. This humidity penetrates the insulation of the rolls also. At the protective periodic checks performed, this situation is identified in the die- lectric tests of the oil. If need be, some tests are also applied to the oil and transformer for the oil according to the size, voltage and significance of the transformer, and the Oil Discaharge Process is decided upon. Our firm serves on this matter including power transformer up to a system voltage of 380 kV. Repairation of Swichgear in its foundation or our company : Our firm also performs repair work of Partially or Fully Oiled, SF6 Breakers and also Seperators on the system beside transformers, and remedies our customer's problems. Periodic maintenanceof Swichgear in its foundation or our company : In case it's requested, on site or at our premises, the maintenance work of Oily and SF6 Breakers are performed by our firm. Moreover, some function tests can also be applied.