Transormer oils Т-1500 and ТК All-Union State Standard 982-80
Transformer oils T-1500 and TK — sulfuric and solvent refined oils are produced from low-sulfur crude oils. The oils are used as oil circuit breakers and other high-voltage equipment as the primary insulating material.
Transformer oil is solvent refined All-Union State Standard 10121-76
Transformer solvent refined oil TSO is designed to fill the oil-filled transformers and other electrical equipment.
| Index name |
Т-1500 |
ТК |
ТСО |
Kinematic viscosity at, mm² / с, not more than:
at 50 °С
at 20 °С
at minus 30 °С, |
8
–
1100 |
8
30
– |
9
28
1300 |
| Acid number, mg КОН / g, not more than |
0,01 |
0,05 |
0,02 |
Temperature, °С:
flash point in an open crucible, not lower than
pour point, not higher than |
135
– 45 |
135
– 45 |
150
—45 |
Fraction of total mass, %, not more than:
mechanical impurities
water soluble acids and alkalis
phenol
sulphur |
None
None
–
– |
None
None
None
0,6 |
| The loss tangent of a dielectric, %, not more than |
0,5 (At 90 °С) |
2,5 (at 70 °С) |
1,7 (at 90 °С) |
Stability against oxidation:
sediment mass fraction in oxidized oil, %, not more than
acid number after oxidation, mg КОН / g, not more than |
Oxidation
0,2 |
0,1
0,35 |
0,015
0,3 |
|
