We are proud to present premium transformer oils from Dongnam, Korea - a leader in transformer oil technology for over 50 years. Our two stellar products cater to all your needs:

1. ESTRAN T2-HI (inhibited):
   • Ideal for large power transformers
   • Resistant to degradation, extending transformer lifespan
   • High performance even under demanding conditions
2. ESTRAN T2-U (uninhibited):
   • Perfect for general and distribution transformers
   • Excellent heat dissipation properties
   • Cost-effective for general applications

Superior features:
✓ Certified by KEPCO (Korea Electric Power Corporation)
✓ Suitable for high voltage transformers up to 765kV
✓ High oxidation resistance, prolonging service life
✓ Superior dielectric strength, enhancing transformer efficiency
✓ Low pour point, suitable for cold climate operations

Laboratory tests by the Electricity Generating Authority of Thailand (EGAT) confirm that ESTRAN oils exceed standards in all aspects. Notably, the oxidation stability reaches 500 minutes, far surpassing the standard requirement of 220 minutes.

DONGNAM ESTRAN T2-HI and ESTRAN T2-U high performance oils from DONGNAM PETROLEUM IND.CO., LTD. are in accordance with IEC 60296 standard, which confirms their compatibility with On-Load Tap-Changers (OLTC) (MR). They are generally permitted to be used in On-Load Tap-Changers manufactured by MR.

Choose Dongnam transformer oils for optimal electrical system performance and long-term value.

Download Dongnam Estran(MR OLTC)

Download EGAT Test Report - ESTRAN T2-HI

Download EGAT Test Report - ESTRAN T2-U