Data Centers

About this product

Your choice of transformer fluid is more important than you think. It isn’t just a performance variable; it shapes what is possible.

As data centers expand to meet the demands of AI and digitization, energy networks are operating at unprecedented scale. Every component supporting that energy flow matters, including the transformer fluid. FR3® natural ester transformer fluid is designed for the next generation of power demand.

It delivers uninterrupted operation, maintains high performance under fluctuating loads, enables flexible transformer design, reduces fire safety design burdens, lowers operational costs, and offers environmental advantages.

Every aspect of FR3 fluid is designed to deliver the one thing you need to count on: uninterrupted operation. It can handle up to 20% more load compared to mineral oil in emergency situations without compromising the transformer’s long-term reliability.

Data center designers build entire safety systems around the possibility of transformer fires. A high-fire-point fluid can meaningfully reduce that design burden. Natural esters have the highest fire point compared to any dielectric fluid. FR3 fluid is classified as a K-class, high-fire-point, self-extinguishing fluid. In nearly 30 years of field use, there have been zero reported fires.

By switching to FR3 fluid, you protect your energy infrastructure from catastrophic power loss and removes a leading cause of catastrophic transformer fires, not just the symptoms.

FR3 transformer fluid provides greater flexibility in data center design. You can choose a more compact transformer that delivers the same load in a smaller footprint or keep the same-size transformer and increase load capacity by up to 20% compared with mineral oil. This flexibility helps improve redundancy and supports high-peak energy distribution.

FR3 fluid reduces operations and maintenance requirements. It also supports fewer more load-flexible transformers and a more efficient system design—delivering performance that lasts. You get all these advantages without the added cost of synthetic ester or dry-type transformers. In contrast, traditional transformer fluid brings hidden costs, including fire suppression, spill cleanup, insurance premiums, and early replacements.

Data centers need energy systems that are as safe and sustainable as they are powerful. FR3 natural ester fluid supports that shift and powers your data center sustainably without compromising energy performance because it is >99% bio-based according to ASTM 6866, derived from 100% renewable vegetable oils, readily biodegradable per OECD 301B, and proven to extend transformer life. Spill remediation can be less costly and hazardous to the environment as FR3 fluid is non-hazardous in soil and water according to GHS. It can help companies move toward their ESG goals without compromising performance.

Traditional transformer fluids often can’t guarantee performance under fluctuating loads or thermal stress. FR3 fluid delivers these benefits while avoiding the higher costs of synthetic fluid or dry type transformers.

FR3 fluid helps enable transformers to keep data online by handling high temperatures and fluctuating loads without compromising performance. It slows insulation paper ageing, improves efficiency, extends asset life, all while operating longer, without disruptions.

Used for nearly 30 years in over 3.5 million distribution and power transformers, and validated through hundreds of field and laboratory tests, FR3 fluid is a proven and trusted natural ester. Using FR3 fluid in your transformers strengthens power infrastructure, ensures performance, and builds system continuity.