2012
The new production facility specialized in production of power transformers up to 500 MVA rated power and 420 kV has been opened. The first 350MVA/420kV transformer has been produced and successfully deliverd to the custome
2010
Company ETRA 33 becomes a part of KOLEKTOR group and changes its name into KOLEKTOR ETRA d.o.o.
2008
We produced the biggest transformer so far: 200 MVA rated power and voltage ratio 116/18 kV. Annual productin exceeds 3000 MVA.
2006
Company acquires a Health, Safety and Environment certificate – OHSAS 18001:1999. Annual production exceeds 2300 MVA.
2004
Annual production of transformers rises above 1700 MVA. The first rectifier transformer of up to 63 MVA rated power and 112 kV rated voltage with 66kA output is developed entirely as a result of our own knowledge.
2003
The company celebrates its 70th anniversary. Annual production of transformers goes up to 1500 MVA with 160 employees.
2002
The company attains an updated Quality Certificate ISO 9001:2000. Annual production of transformers exceeds 1250 MVA with 140 employees.
2000
Enduring commitment to maintaining high quality standards is rewarded by acquiring the ISO 14001 Certificate.
1997
The company starts to operate as a joint-stock company with limited liability under a new name – ETRA 33 Energetski transformatorji, d. d., Ljubljana. Obtaining ISO 9001 Certificate validates our unremitting efforts to maintain high quality standards.
1990
As a consequence of political and economic changes in 1990-1991, we suffered a decline in production and a decrease in the number of employees. Subsequently, the sales activities focus on the markets of Western Europe and the company revives its servicing activities.