Which oil is best for transformer?
Naphthenic mineral oil has long been the most preferred insulating liquid for power transformer insulation because it has a good pouring point at low temperatures, good thermal cooling capacity, low cost, high efficiency and availability on the transformers market [1, 2, 3, 7].
Is the oil in transformers toxic?
The main constituent of transformer oil is polychlorinated biphenyl (PCB) which is responsible for producing toxicity in humans. Chronic exposure with PCB may cause some toxicity such as hepatotoxicity and neurotoxicity.
Why large transformers are filled with oil?
Transformer oil is used to insulate high-voltage electrical infrastructure such as transformers, capacitors, switches and circuit breakers. Transformer oils are designed to operate effectively at very high temperatures, cooling, insulating, and stopping corona discharges and arcing.
What is naphtha based transformer oil?
Naphtha-based transformer oil:
Naphtha is more soluble than Paraffin oil. The sludge of Naphtha oil does not precipitate in the bottom of the transformer and does not disturb the transformer cooling system. The use of Naphtha oil is less than Paraffin oil because it is not easily available in our country.
What is viscosity of transformer oil?
High quality transformer oils are normally in the range of 7- 8 mm2/sec at 40°C and even with such low viscosity, they still meet the requirement for flash point (<135°C) from the same standard.
Is mineral oil the same as dielectric oil?
Dielectric Fluids are replacing standard mineral oils in both stationary and mobile cooling applications because of their exceptional stability, cleanliness and heat transfer characteristics.
Is transformer oil lubricant?
What is Transformer oil? When most people think about oils, they imagine lubricants that help reduce friction and heat. However, that is not the case for all oils. For instance, this oil is actually designed more for insulating than for lubricating, and it is used in very different applications from other oils.
Is transformer oil edible?
The oil reportedly looks just like regular cooking oil, but it lasts much longer. It is not exactly edible, though, as the transformer oil contains toxic polychlorinated biphenyls (PCBs), which have been illegal in the U.S. since 1979. But still, chefs are using the stolen oil to make chips and other fried foods. Dr.