Ideally suited for use in free-breathing transformers and other applications like switchgears, Envirotemp 360 synthetic ester fluid provides excellent fire safety and robust performance, even in extreme conditions.
Your robust, reliable synthetic ester transformer oil
Unlike FR3™ fluid, our superior natural ester dielectric fluid, Envirotemp 360 fluid is perfectly suited for use in free-breathing transformers. Cargill has decades of proven performance with synthetic esters as transformer oil for distribution transformers (pole and pad types), MV/HV power transformers, voltage regulators and OLTCs, rail applications (traction, trackside, and underground), and switchgears.
In addition to its optimized oxidation stability, Envirotemp 360 fluid has a high fire point, excellent thermal and lubricity properties in diverse operating conditions, superior moisture tolerance, and is readily biodegradable (OECD 301B). These physical, chemical, and electrical properties make Envirotemp 360 fluid your solution for a synthetic ester transformer oil that is an alternative to mineral oil and can provide:
Improved fire safety
Extended asset and insulation life
Dielectric strength in extreme temperatures
Better environmental benefits
Envirotemp 360 fluid has been thoroughly evaluated and conforms to IEC 61099 “Specifications for Unused Synthetic Organic Esters for Electrical Purposes.”
Envirotemp® 360 values and specification units
| Standard test methods | Permissible values | Envirotemp 360 Fluid | ||||
|---|---|---|---|---|---|---|
| Property | ASTM / ISO / IEC | IEC 61099 | TYPICAL | |||
| Physical | ||||||
| Color |
ISO 2211 |
≤ 200 Hazen |
≤ 100 Hazen |
|||
| Appearance | Visually clear, free from water, suspended matter and sediment | |||||
| Density at 20ºC (kg/dm3) |
ISO 3675 ISO 12185 |
≤ 1000 | 960 | |||
| Kinematic Viscosity (mm2/s) | ISO 3104 | |||||
| 100ºC | - | 6 | ||||
| 40ºC | ≤ 35 | 34 | ||||
| -20ºC | ≤ 3000 | 1700 | ||||
| Flash Point (ºC) | ISO 2719 | ≥ 250 | > 283 | |||
| Fire Point (ºC) | ISO 2592 | ≥ 300 | > 315 | |||
| Pour Point (ºC) | ISO 3016 | < - 45 | < -48 | |||
| Chemical | ||||||
| Water content (mg/kg) | IEC 60814 | ≤ 200b | ≤ 50 | |||
| Acidity (mg KOH/g) |
IEC 62021 -1 IEC 62021 -2 |
≤ 0.03 | 0.01 - 0.02 | |||
| Oxidation Stability | ||||||
| 164 h @ 120ºC |
IEC 61125 Method C |
|||||
| Total acidity (mg KOH/g) | ≤ 0.3 | 0.13 | ||||
| Total sludge (% mass) | ≤ 0.01 | < 0.01 | ||||
| Electrical | ||||||
| Breakdown Voltage (kV) |
IEC 60156 ASTM D1816 |
≥ 45b |
68 59 |
|||
| Dielectric Dissipation Factor (tan ∂) |
IEC 60247 IEC 61620 |
|||||
| 90ºC and 50 Hz | ≤ 0.03b | 0.01 | ||||
| DC Resistivity at 90ºC (GΩm) | IEC 60247 | ≥ 2 | 60 | |||
Note: Specifications should be written referencing only the defined ASTM or IEC acceptance values and test methods. The listed “typical” values are averaged values summarized from a significant number of data points over many years; they are not to be identified as acceptance values.
ASTM D6871 Standard Specification for Natural (Vegetable Oil) Ester Fluids Used in Electrical Apparatus.
IEC 62770: Fluids for electrochemical applications — Unused natural ester liquids for transformers and similar electrical equipment.
ª IEC 61099 requires testing synthetic ester liquids according to IEC 61125 method C for 164h. Envirotemp 360 was tested for 800h.
b for untreated liquid, as received
Envirotemp 360 fluid details
High flash and fire points
With a flash point of >283°C and a fire point of >315°C, Envirotemp 360 fluid is classified as a Class-K, “less flammable” liquid.
Although its fire point is not as high as that of our natural ester dielectric fluid, FR3 fluid, Envirotemp 360 fluid is still far superior to mineral oil when it comes to fire safety. It is therefore a safer choice than mineral oil for areas where the population density is high, or for enclosed spaces where fire could damage equipment or people.
There have been no pool fires reported in transformers filled with Envirotemp 360 fluid.
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Envirotemp® 360 Fluid Sell Sheet
Get an overview of Envirotemp® 360 synthetic ester dielectric fluid.
Envirotemp® 360 Fluid Data Sheet
Get technical details about Envirotemp® 360 synthetic ester dielectric fluid.
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