Transformer Oil Grade T-1500 , Other products
General specifications
Quality parameters
Results
Values
Kinematic viscosity at 50C, mm2/s
7,79
8-10
Kinematic viscosity at -30C, mm2/s
993
1100
Acid number, mg/KOH/g
0,0029
0,01
Sediments
none
none
Water-soluble acids and alkali content
none
none
Pour point С, max
-45
-45
Flash point closed cup, С, min
141
135
Soda test in 10mm cuvette, max
0,3
0,4
Transparency at 5C
passed
passed
Color by CNT colorimeter, CNT units, max
1,0
1,5
Low molecular volatile acids content, mg КОН/1g max
0,014
0,04
Residue after oxidation, % max
None
None
Acid number increment in mg КОН of 1g of oxydated oil
0,12
0,2
Dielectric loss tangent at 90C, % max
0,37
0,5
Density at 20 0C, kg/m3
880
885