Sustainability without compromises

Implementation of biodegradable liquids isn’t something new in Končar Instrument transformers.

byK. Koprivec


Implementation of biodegradable liquids isn’t something new in Končar Instrument transformers. The company has already started experimenting with alternative liquids in 2016 when it produced its first prototypes (110 kV CT and VT) filled with MIDEL 7131. Even though there was no tangible feedback from the market at the time, the stage was set for future endeavours.

In the past couple of years, the company has shifted into higher gear by producing several prototypes ranging from 110 to 400 kV rated voltage and including a spectre of instrument transformer types (CTs, inductive VTs, combined units and SSVTs) filled with both MIDEL 7131 and Nynas Nytro BIO 300X. These instrument transformers with reduced environmental impact became the poster children of the _Green_Line_ product range (Fig. 1).

This product range combines the benefits of biodegradable liquid properties, such as reduced environmental effects (on soil, water and air) and reduction of carbon footprint, with all of the advantages of Končar design.

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