Firstly, what`s the functions of transformer oil?
The main function of transformer oil:
A. the insulation effect: transformer oil is much higher
than air dielectric strength. Insulation material soaked in oil, not only
can improve the insulation strength, but also from the erosion of the moisture.
B. heat dissipation effect: the big specific heat of
transformer oil, commonly used as a coolant. Transformer the
heat generated by the runtime make inflation rising oil is heated, near
the core and winding through oil and convection, heat through the radiator
out, ensure the normal operation of transformer.
C.Arc suppression effect: in the oil circuit breaker and
transformer on-load voltage regulating switch, switch contact arc can be created.
Due to the transformer oil heat conduction performance is good, and under
the high temperature of arc is to touch a lot of gas, producing high pressure,
so as to improve the arc extinguishing performance of the medium, make the
arc soon go out.
The performance of the transformer oil usually has the
following requirements:
a. transformer oil density is smaller is better, as far
as possible so that the the water and impurity precipitation in the oil.
b. to moderate viscosity, can influence the convection,
is too small and will lower flash point.
c. high flash point should be as far as possible,
generally should not be lower than 136 ℃.
d. should be low freezing point.
e. the impurities such as acid, alkali, sulfur and ash
content is lower, the better, as far as possible to avoid them to
corrosion
of tank insulation, wire, etc.
f. oxidation degree can not too high.Oxidation degree
normally expressed as acid value, it refers to absorb the free acid in 1
gram of oil the required amount of potassium hydroxide (mg).
g. stability degree should not be too low, the stability
degree is usually expressed in sediment of acid value test, it represents
the oil anti-aging ability
ZANYO vacuum transformer oil purifier is
special designed for purifying insulating oil of high voltage electric
equipments(especially for more than 500KV UHV insulating oil) in workshops or
the field, storage tanks or drums, it adopts double stages vacuum source,
double stages vacuum dehydration and degasification vessels, three stages
precise filtration system, which can separate moisture, gas, particles and
other harmful ingredients from oil much quickly and effectively to ensure
the dry-level and dielectric strength improving greatly.. Meanwhile, ZYD-I,ZYD-II
machine can be used for online oil treatment for transformers and vacuum
drying and oil-pumping for electrical equipment. It is also applied to the
above
110KV EHV transmission and distribution equipment,
capacitor oil, cable oil, mutual inductor oil etc.
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