Transformer oil is a kind of fractionation product of petroleum. Its main components are alkanes, naphthenic saturates, aromatic unsaturated hydrocarbons and other compounds. Commonly known as square shed oil, light yellow transparent liquid, relative density 0.895.
Main functions
(1) Insulation function: transformer oil has much higher insulation strength than air. The insulating material soaked in oil can not only improve the insulation strength, but also avoid the erosion of moisture.(2) Heat dissipation: the specific heat of transformer oil is large, and it is often used as coolant. The heat generated during the operation of the transformer makes the oil close to the iron core and winding expand and rise by heating. Through the convection of the oil up and down, the heat is released through the radiator to ensure the normal operation of the transformer.(3) Arc suppression: on the on load voltage regulating switch of oil circuit breaker and transformer, arc will be generated when the contact is switched. Because the transformer oil has good thermal conductivity and can contact a large number of gases under the action of high temperature of the arc, it can generate a large amount of pressure, thus improving the arc extinguishing performance of the medium and making the arc extinguish quickly.
Technical parameters
Application

The
products
are good to be used
as the insulation and heat conduction medium for the electric equipment, such as transformer, transformer and casing, and it's
also suitable to
be
used
as insulation and arc extinguishing medium for oil circuit breaker.Notice
1
Material of the containers used for storage and transportation (storage tanks, rail tankers, tankers, tanks, etc. ), and the
pipelines
has to meet
certain
compatibility
requirement for the
transformer oil.2
To avoid oil emulsion, transformer oil's containers, including their pipes, must
be
strictly separated from other containers. Also, they must to be damp-proof or be
sealed
from exposure to
moist air.