Natural Ester Immersed Power Transformer
Fuji Electric’s Natural Ester Immersed Power Transformer uses soybean-derived FR3® insulating fluid to support fire safety and environmental protection. Available in ratings from 2 to 100 MVA and 11 to 154 kV, it meets IEC and IEEE standards for demanding power applications.

Sales:
Mitchell Lardner
714-721-9106
Nate Hattori
714-721-1874
Enhanced Fire Safety
- Fire point of 360°C and flash point of 330°C
- Higher fire resistance than conventional mineral oil
- May reduce requirements for supporting fire-protection equipment
- FR3® fluid holds FM approval and UL certification
Environmental Performance
- Renewable, soybean-derived insulating fluid
- Biodegradable and non-toxic
- 99% biodegradability in OECD 301 B testing, compared with 23% for mineral oil
- Reduced environmental impact from insulating-fluid leaks
Applications
- Industrial plants
- Data centers
- Hydroelectric power plants
Specifications
| Parameter | Rating |
|---|---|
| Rated voltage | 11–154 kV |
| Rated capacity | 2–100 MVA |
| Applicable standards | IEC, IEEE |
| Temperature class | Class A |
| Ambient temperature | −10°C to +40°C |
Burning Point Comparison

Equivalent CO₂ emissions (LC-CO₂) (Note 1)
(Example: 1,000 kVA/unit and 1,893 L of oil)
(Example: 1,000 kVA/unit and 1,893 L of oil)

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Note 1
-
CO₂ emissions based on BEES 4.0
(Building for Environmental & Economic Sustainability)
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Note 2
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Absorption of CO₂ during soybean growth