TSO
GSOST 10121-76
Transformer oil of selective treatment of TSO. Recommended application field - equipment up to 220 kV inclusive. Made from sulfurous paraffin oils by the method of phenol treatment with subsequent low-temperature dewaxing. Contains the ionol additive.
| Index name | Norm |
|---|---|
| Viscosity kinematic, mm2/s: | |
|
at 50°С
|
9 |
|
at 40°С
|
- |
|
при 20°С
|
28 |
|
при -30°С
|
1300 |
|
при -40°С
|
- |
| Acid number, mg KOH/g, max | 0,02 |
| Temperature, °С: | |
|
Flash Point, COC
|
150 |
|
Pour Point
|
-45 |
| Content: | |
|
water-soluble acids and alkalis
|
None |
|
mechanical admixture
|
None |
|
phenol's
|
None |
|
sulfur, % (mass fraction)
|
0,6 |
|
sulfonated substances, % (vol.), no more than
|
- |
| Stability, indicators after oxidation, not more than: | |
|
sediment
|
None |
|
volatile low-molecular acids, mg Koh/g
|
0,005 |
|
acid number, mg Koh/g
|
0,1 |
| Transparency | at 5°C transparently |
| Density at 20°C, kg /m3, not more than | - |
| Dielectric loss tangent at 90°C,%, max | 1,7 |
| Corrosion on copper plate | - |
| Refractive index, not more than | - |
