Envirotemp™ FR3™ Service Center

Sunbelt Transformer has partnered with Cargill, Inc. to be an Authorized Service Center for Envirotemp™ FR3™ dielectric fluid.

Cargill, an internationally recognized fluids expert, manufacturers Envirotemp FR3 natural ester transformer oil, which has been used in more than a million transformers across six continents in distribution and power transformers through 420 kV. Cargill’s team of dielectric fluids experts collaborates with Sunbelt to implement cost-effective solutions for transformer reliability and performance.



Customers are specifying FR3™ fluid in order to:

  • Optimize transformer designs for increased savings on initial cost or total cost of ownership
  • Improve fire safety
    • FM-Approved, UL-Certified
    • FR3 fluid has a flawless fire safety history
    • FR3 fluid has twice the flash and fire point as mineral oil
  • Extend transformer asset life
    • FR3 fluid protects the insulation life five to eight times longer than mineral oil
  • Increase load capacity
    • Up to 20% more than mineral oil-filled transformers
    • Standardized high temperature capability 20°C higher than mineral oil
  • Improve environmental footprint
    • FR3 fluid has best-in-class environmental characteristics
    • FR3 fluid is biodegradable, non-toxic and non-hazardous in soil and water, carbon neutral (according to BEES® 4.0 lifecycle analysis)

Visit envirotempfluids.com to learn more.