EVO XFo
EVO XFo is a transformer oil created on a biotechnology platform originating from Plant Sugars. EVO XFo will display a high level of oxidative stability, dielectric strength and heat transfer capability over a wide range of temperatures and under heavy electrical stress. As a biodegradable hydrocarbon, EVO XFo is designed to extend the life and value of a transformer. EVO XFo is a mineral oil drop-in that conforms to all ASTM D3487, IEC 60296, and OECD 301B standards.
Transformer Oil Comparison
Oxidation Stability Under Electrical Test
| Property | ASTM | ASTM D3487 |
EVO XFo |
Mineral Oil (Type II) |
Vegetable Oil |
|
Aniline Point °C |
D-611 |
63/84 |
113.5 |
72.2 |
–– |
|
Color |
D-1500 |
0.5 max |
L0.5 |
L0.5 |
L0.5 |
|
Flash Point °C |
D-92 |
145 min |
178 |
151 |
330 |
|
Interfacial Tension |
|||||
|
@ 25 °C dynes/cm |
D-971 |
40 min |
45 |
45 |
27 |
|
Pour Point °C |
D-97 |
-40 max |
-57 |
-54 |
-21 |
|
Spec. Grav. 15°C/15°C |
D-1298 |
0.91 max |
0.818 |
0.8938 |
0.96 |
|
Viscosity cSt (SUS) |
D-445 |
||||
|
@ 100 °C |
3.0 max |
3 |
2.46 |
7.9 |
|
|
@ 40 °C |
12.0 max |
11.7 |
9.6 |
32.7 |
|
|
@ 0 °C |
76.0 max |
64.2 |
75.2 |
187 |
|
|
Appearance |
D-4176 |
Clear & Bright |
Clear & Bright |
Clear & Bright |
Clear & Bright |
|
Dielectric Breakdown kv |
D-877 |
30 min |
49 |
40 |
47 |
|
Gassing Tendency uL/min |
D-2300B |
30 max |
-2 |
20 |
-79 |
|
Power Factor @ 60 Hz, % max |
D-924 |
||||
| @ 25 °C |
0.05 max |
0.001 |
0.005 |
0.05 |
|
|
@ 100 °C |
0.30 max |
0.01 |
0.114 |
–– |
|
|
Oxidation Inhibitor Content |
D-2668 |
0.3 |
0.26 |
–– |
|
|
Oxidation Stability |
D-2440 |
||||
|
% Sludge, by Mass |
0.1 max |
< 0.01 |
0.001 |
–– |
|
|
Rotary Bomb Oxidation minutes |
D-2112 |
195 min |
> 550 |
252 |
37 |
|
Water ppm |
D-1533 |
35 max |
9 |
10 |
55 |
|
Neutralization Number mg KOH/g |
D-974 |
0.03 max |
< 0.01 |
0.01 |
0.03 |
