Transformer Oils

TRANSFORMER OILS

Calumet has over 25 years of experience producing high-refined, clean, and stable electrical insulating fluids. The CALTRAN™ and VOLTESSO™ line of naphthenic transformer oils is a portfolio of customized products, formulated to fully meet specific global specifications – thus providing customers flexibility in choosing the transformer oils that meet their specific requirements. Calumet is a long standing participant in the Annual DOBLE Survey on transformer oil.

CALTRAN™

Our line of transformer oils are available in six grades and provide excellent dielectric properties, high thermal stability and good oxidation resistance.
  • Rapid heat transfer properties
  • Outstanding low temperature properties without the need for pour point depressants
  • Miscible with all comparable hydrocarbon-based transformer oils
  • Meets ASTM D3487 specifications for Type I and Type II application specifications

CALTRAN™ 60-00 Group U

Uninhibited transformer oil provides protection without the use of additives.
  • Meets IEC 60296, ed. 4, 2012 general specifications for uninhibited oil
  • Verified by an accredited independent laboratory
  • Meets IP 346 and Modified Ames criteria for biological safety
  • Miscible with insulating oils meeting IEC 60296: 2012 specifications

VOLTESSO™

Our line of transformer oils are recommended for use in electrical applications subject to extremely cold start-up conditions or those with forced oil cooling systems.
  • Excellent low temperature fluidity
  • Exceptional insulating properties and corrosion control
  • Meets CAN/CSA-C50-14 specifications

Calumet can custom blend to meet specific customer requirements

For product inquiries, contact our Product Support team at +1.800.437.3188