FR3® natural ester dielectric fluid: Leading the way
Benefitting utilities and businesses, to better protect and serve communities.
From its very first validation tests over 25 years ago to the latest installations of FR3-fluid-filled power and distribution transformers across the globe, FR3 natural ester dielectric fluid has led the industry. FR3 fluid enables more cost-effective, more resilient, higher-performing, safer, and environmentally better ways to power how communities live, play, work, and thrive.
Although mineral oil has long been the fallback transformer oil, it simply isn’t the optimal dielectric fluid. In millions of installations worldwide, FR3 natural ester dielectric fluid has proven to be superior in the ways you value the most. We have the leadership, experience, and proof, so you can be sure to take advantage of FR3 fluid’s benefits.
Why FR3 Fluid
FR3 fluid outperforms mineral oil in overall cost savings, grid resiliency, transformer performance, fire safety, and environmental benefits. See why these critical reasons to switch from mineral oil to FR3 natural ester transformer oil matter. Learn more or Download Brochure.
Grid resiliency that pays in more ways than one
A transformer’s solid insulation system and its dielectric fluid constrain its (temperature) operating limits. Because of FR3 fluid’s properties, transformers containing this natural ester can operate up to 20°C warmer than can mineral-oil-filled equivalents—enabling increased loading capability by up to 20% (or even more in some cases). When a transformer is designed to use FR3 fluid, this increased capacity may be even higher. Not only can FR3 fluid help you respond to fluctuating power demand, it won’t accelerate asset aging and may extend transformer life.
Superior performance from moisture tolerance
Intruding moisture (such as from a leak), “free” water in insulating fluid (as in cold-temperature environments), or water released from aging insulation paper can drop capacity and cause dielectric failure in mineral-oil-filled transformers. With a much higher saturation point (compared to transformer mineral oil), FR3 fluid will rarely cause transformer failure due to moisture. In fact, its unique chemical properties, and the fact that that, during hydrolysis, FR3 fluid actually absorbs free water, slows the aging process of a transformer’s solid insulation.
Better for the Planet
Contribute to your company's sustainability commitments, help protect the environments where your transformers operate, and reduce your carbon footprint by choosing FR3 fluid.
As a biodegradable transformer oil with best-in-class properties, FR3 fluid minimizes environmental impact in ways that mineral oil never will. FR3 fluid's superior environmental benefits can help you both meet sustainability goals and potentially gain significant cost savings—without having to compromise on either.
Delivering business value
There are a number of different critical reasons why partnering with Cargill and using FR3 fluid instead of mineral oil is good for business, including increased grid reliability and resilience, better cost management with a more effective transformer system, and minimized environmental impact.
Find more about how using FR3 fluid throughout your transformer fleet can deliver significant business value, while serving communities reliably and effectively.
Average total cost of ownership savings
Up to 20% more load capacity than mineral oil
Up to 8X longer insulation life
Mineral oil's flash and fire points
56X less CO2 emissions than mineral oil
FR3 Fluid Applications
Power Transmission and Distribution
FR3 fluid is successfully used in power generation and distribution transformers of all voltage classes. When compared to mineral oil, FR3 fluid delivers utilities superior performance and measurable cost efficiencies.
When you choose FR3 fluid for your utility, you empower a flexible and resilient grid to benefit your business, community, and the planet.
FR3 fluid is used in land-based and floating solar plants across the globe.
Solar farm transformers with FR3 fluid enjoy major performance benefits like higher flexible loading capacity and minimal maintenance. The environmental benefits allow for smaller installation footprints and improved fire safety over mineral oil.
Demand for wind power continues to expand and wind turbines for large-scale wind farms have grown more powerful. Now, it is essential to specify high-performing transformers that are compact, lightweight and low maintenance.
Using FR3 fluid in wind turbine transformers— for both onshore and offshore applications—easily meet these criteria with a notable impact on the bottom line.
FR3-fluid-filled transformers can extend the paper insulation life up to 8X longer than mineral-oil-filled equivalents because of its superior moisture handling capabilities. You also get improved fire safety with a fire point more the 2X higher than mineral oil. As a result, when you retrofill any mineral-oil-filled transformer with FR3 fluid, you extend asset life while also lowering the risk of fire.
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