top of page



Electrical Insulating Oil

DONGNAM Petroleum has developed a high degree of purification techniques to produce supreme electrical insulating oil. 

Our transformer oil is currently used in high voltage power transformers (765kV, 667MVA)


ESTRAN meets and/or exceeds the various international standards of different countries around the world.  

 - Excellent oxidation stability

 - Excellent breakdown voltage

 - Excellent chemical stability

 - Non-corrosive, No PCBs

Mineral Oil.jpg
bottom of page