Table of Contents
Why is transformer oil heated?
When transformer oil heating is necessary Oil pumping may be difficult in low temperatures. Heating can alleviate this problem. Since water boiling point is lower, heating can evaporate that water from the oil before the boiling point of oil is achieved. Oil heating systems are also used when washing a transformer.
Why is a transformer 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.
Is transformer mineral oil flammable?
The temperature of the mineral oil inside the transformer tank increases, forming flammable vapour that is suddenly released from an opening in the tank into the surrounding atmosphere. Although the probability of transformer fires and explosions is relatively low, it is not negligible.
What is oil filled transformer?
Oil immersed transformer, also called oil filled transformer, is a kind of voltage transformation device utilizing oil cooling method to reduce the transformer temperature. Different from the dry type transformer, the body of oil immersed transformer is installed in the welded steel oil tank filled with insulation oil.
How do oil filled transformers work?
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 do transformers need cooling?
Cooling of a transformer is the process of dissipation of heat developed in the transformer to the surroundings. The losses occurring in the transformer are converted into heat which increases the temperature of the windings and the core. In order to dissipate the heat generated cooling should be done.
Why do transformers blast?
The most common reason why transformers explode and burn is accidents caused by lightning strikes. Lightning strikes can often damage the wiring and transformer equipment. Other extreme weather conditions such as strong winds and rains can cause trees to fall on transformers, causing explosions.