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ynergy nergy otivation WE CONSUME ALL OUR ENERGY FOR ENERGY ABOUT US Sem Transformator started activities by maintenance of the transformers continued with manufacturing. Within the progress, SEM integrated technology to his production. By the

  2. ynergy nergy otivation

  3. WE CONSUME ALL OUR ENERGY FOR ENERGY

  4. ABOUT US Sem Transformator started activities by maintenance of the transformers continued with manufacturing. Within the progress, SEM integrated technology to his production. By the professional founders experience and the team’s harmony , SEM become one of the most important companies in the sector. Since 1993, production is done by the TSE (Turkish Standards Institute) certificate. With the references of ISO 9001: 2008, the company proved its success and quality. In the progress, the company focused on pre-sales services, production, after sales assistance and customer satisfaction and then in 2010, moved to his new plant which has bigger production capacity and fitted by technologic equipments. Today, Sem Transformator has established his brand name in local market and his place on international platform by exporting to more than 40 different countries in Europe, South America, Africa, Asia and Middle East. OUR MISSION OUR VISION The aim of Sem Transformator is to maintain his SEM Transformator determined his mission as production by using high quality raw materials foreseeing the needs of the sector and continuing and technological machines. This way Sem aims production in international standards with to achieve customer satisfaction with supplying increasing customer satisfaction becoming a products which are manufactured and tested leader in the sector. with reliable methods. The vision of Sem Transformatör is to be a world transformer brand.

  5. ABOUT US SEM Transformator A.S. is a 35 years old family company now with around 170 employees as 40 White Collar and 130 blue collar. Most of the staff have experience of over 15 years in transformer manufacturing. Also in the last 6 - 7 years we developed our position in the market with investments on technology and production. We are developing our export markets as well. ANNUAL TURNOVER COMPARISION BY YEARS 2014 2015 2016 2017 2013

  6. PRODUCTS SEM Transformator is manufacturing power and distribution transformers from 10 kVA up to 16000 kVA (up to 54 kV) with different types of voltage and cooling. Besides from standart products, SEM Transformator designS and manufactureS special transformers upon customized requests by the Customers

  7. Distribution Transformers • A distribution transformer's function is straightforward: to step down the voltage and provide isolation between primary and secondary. Electrical energy is passed through distribution transformers to reduce high- distribution voltage levels down to end-use levels. • Distribution transformers normally have ratings up to 5000 kVA. • Cooling type can be ONAN, ONAF or KNAN • number of phases: single-phase or three-phase • Can be manufactured as hermetically sealed, hermetically sealed with gas cushion or with conservator tank. • HV Porcelain or Plug-in Bushings can be used.

  8. Medium Power Transformers • Rated power up to 16 MVA • Rated voltage up to 54 kV • Can be manufactured as hermetically sealed, hermetically sealed with gas cushion or with conservator tank. • Off-Circuit Tap Changer (OCTC) or On-Load Tap Changer (OLTC) • High capacity of cooling options such as ONAN, ONAF, OFAF (also with K class insulating oil)

  9. Special Transformers • Dual HV and Dual LV Transformers. • AutoTransformer • 6 , 12, 24 Pulse Transformers • Isolation Transformers • Rectifier Transformers • Earthing Transformers • Transformers feeding converters/inverters

  10. PRODUCTION PLANT • Sem Transformator, who becomes a brand by its long-lived and reliable products, continues his production in his 18.000m² plant in Baskent Industrial Estate. Sem is improving and renewing his products and production by following up latest developments, requirements and demands closely in energy sector. Sem’s IEC standard products are tested in international KEMA, CESI and ICMET laboratories and the TSE (Turkish Standards Institute) convenience of the products is certificated. Considering the compromise between quality and competitiveness, Sem Transformatör represent the harmony of design, quality and technology.

  11. PRODUCTION PROCESS Design Engineering SEM Transformer design team use high technology manufacturing equipment in both standard transformers and special transformers projects. SEM Transformer optimize quality and market competitiveness by standard and special designs which are developed by SEM electrical & electronics engineers..

  12. PRODUCTION PROCESS Magnetic Core Production Assembly and Tank The magnetic core is manufactured using high- When fully completed, the primary and secondary permeability and low-loss cold rolled silicon steel used for windigs resemble two compact cylinders and they are magnetic cores of the transformers. The core assembled coaxially on the core legs. Terminal components which are cut in our high accuracy cutting connections and insulation result in complete active part. line, are assembled by qualified specialists on special Before filling the transformer with oil, the active part is workbenches in order to prevent any deformation of the dried in the oven at high temperature (107 oC ) and full sheets, also assuring a perfect core alignment. vacuum. Transformer tank, cover, oil conservator and corrugated walls and other metallic parts are also manufactured in SEM. Welded parts are checked with 3 different tests against oil leakage and pressure withstanding. Transformers are shot blasted or sand Windings are produced strictly matching with design blasted to protect against rust, corrosion and verify parameters. Upon customer request electrolytic copper sticking or paint properly. Tank inside is varnished and out or aluminum is used as conductor, press band paper is side is treated with one coat of undercoat and 3 coats of used as insulator and proper wooden bars are used for paint. Tanks can be hot dip galvanized up on customer cooling. Materials are chosen as temperature resistant request. and cannot be dissolved in oil. Full automatic machines wound the windings. Windings are passed to next stage for montage. We meticulously carry on all the steps from design to assembly in production..

  13. PRODUCTION PROCESS Magnetic Core Production Assembly and Tank The magnetic core is manufactured using high- When fully completed, the primary and secondary permeability and low-loss cold rolled silicon steel used for windigs resemble two compact cylinders and they are magnetic cores of the transformers. The core assembled coaxially on the core legs. Terminal components which are cut in our high accuracy cutting connections and insulation result in complete active part. line, are assembled by qualified specialists on special Before filling the transformer with oil, the active part is workbenches in order to prevent any deformation of the dried in the oven at high temperature (107 oC ) and full sheets, also assuring a perfect core alignment. vacuum. Transformer tank, cover, oil conservator and corrugated walls and other metallic parts are also manufactured in SEM. Welded parts are checked with 3 different tests against oil leakage and pressure withstanding. Transformers are shot blasted or sand Windings are produced strictly matching with design blasted to protect against rust, corrosion and verify parameters. Upon customer request electrolytic copper sticking or paint properly. Tank inside is varnished and out or aluminum is used as conductor, press band paper is side is treated with one coat of undercoat and 3 coats of used as insulator and proper wooden bars are used for paint. Tanks can be hot dip galvanized up on customer cooling. Materials are chosen as temperature resistant request. and cannot be dissolved in oil. Full automatic machines wound the windings. Windings are passed to next stage for montage. We meticulously carry on all the steps from design to assembly in production..

  14. OUR SERVICES Maintenance of Distribution and Power Transformers Changeable to defects, maintenance service is provided at our plant or on site. Our maintenance service includes; - Maintenance of power transformers on site and site tests, - Reparation of power transformers and plant tests, - Maintenance of distribution transformers on site and site tests, - Reparation of distribution transformers and plant tests, - Conduction of seminars about production and maintenance of transformers, - Conduction of seminars about defects and reparation of transformers.

  15. ENVIRONMENTAL POLICY We adopt environmental policy as a principle - Controlling the elements that might damage environment in self working area. - Providing educations about environment to increase consciousness of the society and staff. - Following technologies which are protecting environment. - Self improving and obeying the rules of environment. - Using raw materials, natural resources and energy efficiently. - Developing both economic and quality projects. - Manufacturing with using the systems and education that minimizes possible negative effects on environment.

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