MarkoEco2 oil-immersed transformers – designed to EN 60076 / EN 50588-1 and the EU EcoDesign Regulation 2019/1783 (Tier 2). The most common ratings are available ex stock.

Energeks MarkoEco2 oil-immersed transformers are hermetically sealed MV/LV distribution transformers designed for high reliability and low losses in power distribution. We offer them in ratings from 25 kVA to 4500 kVA, for primary voltages of 6.3 kV, 10 kV, 15.75 kV, 20 kV and 21 kV – the standard European distribution levels (10/0.4, 20/0.4 kV) as well as national ones (other voltages up to 36 kV on request) and secondary voltages of 0.42 kV, 0.69 kV and 0.8 kV. They serve utilities, industry, construction and renewable installations – PV farms, energy storage and EV charging stations.

HV tapping range: ±3×2.5% (7 positions) as standard; ±2×2.5% (5 positions), ±4×2.5% (9 positions) and ±5×2.5% (11 positions) also available. Vector group Dyn5 or Dyn11 (Yzn5 for the smallest ratings).

MarkoEco2 transformers have a hermetically sealed tank with corrugated radiators, filled with IEC 60296 mineral oil, without a conservator – the oil has no contact with air and the transformer is practically maintenance-free. They are fitted with a lockable tap changer, porcelain HV and LV bushings, bidirectional rollers, lifting lugs, earthing terminals, a thermometer pocket and an oil drain valve. They can operate indoors and outdoors, also in pole-mounted versions.

No-load and load losses meet EcoDesign Tier 2 – Regulation (EU) 548/2014 as amended by Regulation (EU) 2019/1783 – as well as EN 50588-1 and EN 60076-1. Every transformer passes full factory tests and is delivered with a test report, CE declaration of conformity, rating plate and manual. MarkoEco2 transformers are covered by a 5-year warranty.

Options: PT100/PTC temperature sensors, gas/pressure relay, contact thermometer, online monitoring, surge arresters, copper windings, tank painted in any RAL colour.