Kolektor ETRA is a manufacturer of power (generator) transformers and step-up transformers of up to 500 MVA rated power and up to 420 kV rated voltage. The company’s manufacturing facilities include machinery for cutting and stacking of core sheets winding and treating of different kinds of windings, as well as dry and oil treatment facilities.
Kolektor ETRA has a high voltage laboratory for transformer testing, equipped with advanced and precise measuring equipment assuring exact measurements and reliable results. The measuring instruments are regularly calibrated by authorized institutions.
"Our experienced and skillfully trained team is able to perform any type of routine, standard and special tests, required by the regulations of international standards, and dielectric insulation tests on other types of high-voltage equipment," states the company.
The Kolektor ETRA factory also offers repair and maintenance services for transformers produced by other manufacturers, either on site or in our workshop. The advantages of this servicing department are the fast reaction, professional inspection and diagnosis of the failure, and repair within the agreed-upon term.
LATEST issue 1/2021
The thermal characteristic of the protected object is crucial; for example the electric cable, the wiring harness or the semiconductor switch in the connected control unit. Instead of safety fuses or electro-magnetically triggered mechanical contacts, electronic fuses contain semiconductor switches along with their control logic including protective and diagnostic functions