Energy - Instrument Transformers

Zelisko’s Energy division develops, manufactures and sells CT and VT for indoor as well as for outdoor application. The range of rated values varies up to 52 kV and 50 kA. Since taking over AEG Instrument Transformers, Zelisko provides the former product range of AEG.

To satisfy the customers´ high requirements regarding quality, flexibility, lead time and competitive price, the engineering and production systems are subject to continuous improvement.

In particular, the APG casting process for epoxy resin in conjunction with computer-aided dimensioning of the products helps customers to obtain the essential competitive-advantage.

All instrument transformers contained on this website are free of maintenance, dry-type and suitable for installation in any position possible. The excellent product quality provides best insulation, great mechanical strength and high arc and temperature stability.

All instrument transformers are subject to a routine test according to the respective standards (e.g. DIN VDE, IEC, ANSI, GOST…).

The obligatory high reliability of products for power T&D is not only based on the implementation of the latest technologies but also on the consistent utilization of long-time experience. Zelisko instrument transformers have proven their worth for more than 50 years, operating in substations under diverse conditions all over the world.