Transformer oil has several important functions. Transformer oil is used in a transformer to reduce the loss of heat in the transformer, cool the transformer, insulate the transformer, prevent spark-over and arc, and prevent tracking and aging of insulating material. Some types of oils are designed to resist turning into gas which can happen when oil is exposed to high temperatures for a long time and others are designed to be environmentally friendly.
Cooling: The purpose of cooling oil in transformers is to remove the heat generated by load losses (I²R) from active parts such as windings or core and take it to an external cooling system where heat can be dissipated into the ambient air. Oil also acts as a coolant for transformers with on-load tap changers (OLTC) by circulating through them during operation and keeping them cool.
Insulation: The main function of insulation in any high voltage electrical equipment is to prevent current leakage within the equipment or between equipment winding/windings and earthed structures. Also known as dielectric fluid, transformer oil provides insulation inside your transformer and prevents arcing or sparks from forming. It also helps remove impurities from the core and coils of your transformer. Transformer oil provides excellent dielectric properties, which when combined with the high resistivity of solid cellulose insulation materials prevent conductor-to-conductor or conductor-to-ground flashover at high voltages stressing these elements.
Shielding: Transformer oil protects cellulose-based insulation from moisture ingress by providing a watertight seal around any solid insulating material present in your transformer. This keeps moisture away from cellulose paper insulation on windings ensuring they do not absorb moisture that would reduce the effectiveness of their dielectric properties over timeThere are several properties of transformer oil. These properties or characteristics are what make transformer oils effective and different from other types of oil. They are particularly engineered to have these properties in order for them to be efficient. These properties are as follows;
Dielectric strength
Specific gravity
Viscosity
Flash-point
Pour-point
Fire point
Aniline point
Acidity
Neutralization number
Water content

The lifespan of a transformer can be increased by keeping the oil impurity free. Hence getting the right products is very important. Since it is one of the major components of your transformer, you will want to make sure you are using the right type for your transformer. Morven Industrial Limited is here to ensure you have the right transformer oil for your transformers. Our products are top quality, produced by top brands in the world and they are available at friendly prices. Contact us now and let us supply you with the right oil for your transformers.