About Us

Martech Trafo

It has always been the company’s aim to contribute safe deliveries to customers right through to the end user.

MARTECH TRAFO is a manufacturing and electrical equipments trading company located in Ankara, Turkey.The company’s core business consists of transformers for a large region covering Turkey, Balkans, Europe, Middle East, Africa, CIS Countries and Ukraine.

The company target is to be the market leader in Turkey,Middle East and Europe for distribution transformers and offers packaged solutions based on customer requirements.

Products

What We Do

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This type transformers are used to change the input and output voltages up to 36 kV voltage level with capacity of 5000kVA power in desired ratios. The heat generated during operation is maintained and cooled at the normal temperature level with transformer oil.

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Dry Type (Cast Resin) Transformers differ from oil type transformers by the cooling method. HV windings of transformer are coated with epoxy cast resin under vacuum. LV windings of transformer can be produced by both cast resin and resin impregnated prepreg method.

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These transformers are produced in a range of 25- 5000kVA, up to 72,5kV mv level, designed with low losses, considering the harmonics, with short circuit and voltage fluctation resistivity. They have some very unique characteristics that require careful consideration.

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These power transformers are used in electricity transmission and distribution networks to overcome differences between primary (input) & secondary (output) voltage. These are designed and manufactured according to the customer requirements at 5000 kVA and 72.5 kV voltage level and above.

Quality Policy

Quality

Transformers from Martech Trafo fully comply with the applicable international standards and regulations. Quality, which means satisfying requirements completely and in a timely manner, with environmental awareness, at a safe and reliable level with the focus on customers and emphasis on process in all our products and services, is the necessary condition for achieving our goals and objectives.

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Production

Production

Low voltage and high voltage windings in Distribution and Power transformers are constituted by using round and profile electrolytic copper or aluminum, Class-A or other Class isolation paper and transformer press board materials with convenient winding techniques according to the current and voltage situations. Low and high voltage windings are resistable to atmospheric shock wave in cylinder or oval winding type. Mechanical pressing is applied against short circuit dynamic forces. Adequate axial and radial channels are left for cooling of the windings.

Cores of high quality is manufactured from cold rolled silicon steel. Total thickness determines the power transformers will be manufactured, as well as the quality of the magnetic permeability is expressed in units of gauss. MOH quality with high magnetic permeability 0.18, 0.20, 0.23, 0.27, 0.30 mm thickness are used in the Western European electrical steel manufacture. After that quality control department with the approval received, transformers and voltage of the power is cut according to the size of the project and the process is subjected to a series of core sheets.

Core, coil and top cover assembly are built up to resist the predicted short circuit mechanical forces. Active part including the top cover is mounted to the tank with bolts in Standard transformers. Applications that mount the active part directly to the tank are present depending on the customer demand.All connection elements on the top cover and High Voltage bushing arching horns are made of stainless or anti-corrosive special coated material. Top Cover arrangement is created according to the contract or customer demand.

Tanks and top covers are made of soft steel. Cooling surfaces of distribution transformers consist of corrugated walls. These walls also form sides of transformer tank. Base plate, sides and frame are seal welded. Corrugated wall can be used as cooling surface of the transformer. Radiators can also be used as cooling surfaces.After welding, each tank should pass oil leakage test. For this reason, pressure is applied to every tank after production. Tanks and top covers finished are sandblasted according to the DIN standards. If the customer has special requirements or various demands for sandblasting, our company has facilities to meet these. It is also possible to cover the bushings on top cover inside a box made of plate convenient to IEC 60144. Also, cable box can be mounted on the sides of the tank according to BS 2562.

Transformers are in color RAL 7033 as standard. Tanks are painted by flow coating and spraying method. Method of painting is chosen according to customer demand and working conditions of the transformer. Transformers in different applications (zinc coating), different film thicknesses and different colors can be offered according to customer demand. Also, hot-dip galvanized tanks can be manufactured if requested.
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