ABOUT US

Korotaj APP is one of the major Slovenian producers of various types of strip wound transformer cores made of oriented silicon iron steel strip. We took over the production of Iskra d.d. With our production line and highly trained personnel, we fulfill the requirements of local and foreign markets.

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To produce high-quality cores for transformer and chokes, we use an oriented silicon iron steel strip that contains 3% silicon. We mainly produce cores from M103-27P and M089-27N materials. The strip thickness is 0.27 mm and can be used up to 200 Hz. The grain oriented silicon iron steel strip Trafoperm N2 with thickness 0.1 mm cover the frequency range from 200 Hz to 2 kHz.

 

For the production of cores, we select our GOESS suppliers and ensure diligent control of production and the quality of the entire working process. All cores are measured 100% by a computer controlled measurement system MDK1000A. The test reports are available for our customers in PDF form.

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Additional services

 

We also offer our customers cores insulated with a polyester film (Mylar foil) or cores coated with epoxy resin. Both insulations are provided with UL file numbers.

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Development of cores

 

Our engineers use their knowledge and experience to offer the professional advice you need for the planning and selection of cores to meet your requirements.

 

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