What is the purpose of oil in a transformer?
Transformers are used by the electrical industry to transfer electrical energy from one circuit to another. The oil surrounding the coils in a power transformer provide cooling, insulation and protection against corona and arcing.
When should I change the oil in my transformer?
Dissolve Gas Analysis of transformer oil should be done annually for 132kv transformer, once in 2 years for the transformer below 132kv transformer, and once in 2 years for the transformer above 132kv transformer.
Can transformer oil catch fire?
The temperature of oil fires ranges from 960 to 1200 °C, and a transformer oil fire can last from 4 to 28 h34. However, transformer tank explosions do not always result in a fire; the possibility of fire depends on how quickly the transformer protection system operates35.
Is transformer mineral oil Hazardous?
It’s also highly flammable. If a transformer were to leak mineral oil, it could easily start a fire. … And although mineral oil is relatively more benign than PCBs, it’s nonetheless an environmental contaminant that requires careful hazardous material removal.
Does transformer oil last forever?
Usual transformer oil storage time is five years from the date of production. After five years, the oil product loses its performance quality. Attempts to improve the situation by using additives are futile, the additive components simply precipitate from the oil.
Do transformers have oil in them?
Transformer oil is a mineral based oil that is commonly used in transformers for its chemical properties and dielectric strength. This oil in your transformer acts as an insulator and a cooling agent. … The acid will form sludge which settles on the windings of the transformer resulting in reduced heat dissipation.
Why is nitrogen gas used in transformers?
To put out the fire in a transformer, were it to occur, we can reduce the oxygen level by displacing it with nitrogen gas. … The nitrogen pressure in the transformer also helps to reduce the top oil pressure and temperature which is critical for preventing an explosion.