Table of Contents
What is chemical name of transformer oil?
The transformer oil used in India is paraffin based having long chains of hydrocarbon, with general chemical formula, C nH2n+2.
What chemicals are in transformers?
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.
Which type of oil is used in an oil transformer?
mineral oil
Three basic types of transformer oil used are mineral oil (mostly naphthenic), silicone, and bio-based. Mineral oil based transformer oils dominate the consumption as it has good electrical and cooling properties, and provides cost-effective solution.
What liquid is in a transformer?
Most power transformers are filled with mineral oil refined to achieve the desired electrical and chemical properties. Some transformers, particularly indoor units, are filled with a synthetic fluid, such as silicon, R-temp, or Askarel (PCB fluid).
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 naphthenic oil mineral oil?
Crude oil is extracted from the bedrock before being processed in several stages, removing natural contaminants and undesirable hydrocarbons. This separation process produces mineral oil, which can in turn be denoted as paraffinic, naphthenic or aromatic.
What is use of transformer 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 transformer oil made of?
Transformer oil is most often based on mineral oil, but alternative formulations with different engineering or environmental properties are growing in popularity.
What is naphtha based transformer oil?
Transformer Oil Types Naphtha oil is more easily oxidized than paraffin oil. But the product of oxidation – i.e. sludge – in the naphtha oil is more soluble than the sludge from the p araffin oil. Thus sludge of naphtha-based oil is not precipitated in the bottom of the transformer.
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].
What is the purpose of oil in a transformer?
Purpose of oil in a transformer: As the current flows through the windings of a transformer heat is generated due to the resistance of the windings. Also the flux in the core generates heat. This heat is absorbed by the oil surrounding the transformer core as well as the windings.
What is transformer oil used for?
Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers.
What type of fluid is used in Transformers?
Large power transformers are filled with oil that cools and insulates the transformer windings. Mineral oil is the most common type in outdoor transformers; fire-resistant fluids also used include polychlorinated biphenyls (PCB)s and silicone. The insulating liquid is in contact with the internal components.
What is electrical transformer oil?
Transformer Oil. a petroleum or synthetic oil used as an insulator and coolant in transformers and other oil-filled electrical equipment. Petroleum transformer oils are also used in oil circuit breakers for extinguishing an electric arc when the current is switched off.