TRANSFORMER OIL

DONGNAM Petroleum Ind. Co.,Ltd. is one of the major insulating oil

producers in South Korea.

Established in 1973,we have years of accumulated technical know-how,ensuring

the quality and reliability of our transformer oil.

We have supplied to various projects such as substations,thermal power plants,and nuclear

power plants for nearly a half century in Korea and has been exporting the oil around the globe.

We guarantee our quality based on our vast technical experiences,Q.A management system which provides

accurate oil and chemical analysis,using the state-of-the-art analysis equipment together with our highly skilled

research technicians.

DONGNAM is ISO 9001 &ISO 14001 certified company.

ESTRAN Series

Electrical Insulating Oil

ESTRAN is our high-quality transformer oil produced by developing and

applying high degree of purification techniques.

Our transformer oil has;

• Excellent oxidation stability

• Excellent dielectric strength

• Excellent chemical stability

• Non-corrosive,No PCBs

• High levels of purifying techniques,producing insulating oil for

high voltage power transformers