to Transformer oils (insulating oils)
to Properties of fluids
(submitted by the website administration)
| Silicon transformer oil | ||||
| Polydimethylsiloxane based fluid | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density at 60°F (15.6°C) | 0.960 *10³ | kg/m³ | 59.9 | lb/ft³ |
|---|---|---|---|---|
| Kinematic viscosity at 68°F (20°C) | 55 | cSt | 55 | cSt |
| Kinematic viscosity at 212°F (100°C) | 15 | cSt | 15 | cSt |
| Fire point | min.350 | ºC | min.662 | ºF |
| Pour Point | max.-50 | ºC | max.-58 | ºF |
| Flash point | min.300 | ºC | min.572 | ºF |
| Autoignition point | 435 | ºC | 815 | ºF |
| Specific heat capacity | 1510 | J/(kg*K) | 0.360 | BTU/(lb*ºF) |
| Thermal conductivity at 20ºC (68ºF) | 0.15 | W/(m*K) | 1.019 | BTU*in/(hr*ft²*ºF) |
| Thermal expansion at 20ºC (68ºF) | 10.4*10-4 | ºCˉ¹ | 5.8*10-4 | in/(in* ºF) |
| Breakdown strength | 50 | kV | 50 | kV |
| Dielectric dissipation factor at 90ºC (194ºF) | max.0.001 | max.0.001 | ||
| Permitivity at 20ºC (68ºF) | 2.7 | 2.7 | ||