Name: Bidusmita Sahoo
Regn no: 0901106016
Branch: Electrical Engineering
Mr. Abhimanyu Mohapatra
Mr. Ranjan Kumar Jena
What is cast resin process ?
Why cast resin transformer ?
Types of tests on resin transformer
Comparison with oil-filled transformer
1.Set fire to the winding 2.ext paint caught fire 3.Self-extinguished 4.No damage
◆ Fire Testing:
Test result: Non-flammable
◆ Cracking I Damp Heat Testing:
Test result: Appearance normal, no damage, non-cracking.
Technical characteristics remain unchanged.
OVERLOAD When the temperature of the cooling air is
lower than the limit allowed for the insulation class of the
windings, the output power of the transformer can be
higher than the nominal one. On the other hand by
reducing the value of the selected power relative to the
nominal one, the transformer can also be used without any
problems with higher air temperature like for example
those in tropical climates. The graph shows the curve
which indicates the power to be selected as a function of
the air temperature.
ADVANTAGES OF CAST RESIN
3.High Mechanical strength
4.No leakage of liquids
5.Maintenance free & environmentally safe
6.High overloading capability
7.Only needs air cooling
8.Impulse voltage strength
9.Less failure rate
DISADVANTAGES OF CAST RESIN
1.Larger physical size
2.Initially high purchase cost
Cast Resin transformer is used where
safety, pollution, size & economy matters a lot.
Now-a-days the use of Cast resin transformers has
been increased and they are widely used in power
houses, Apartments, as back-up supply, etc. These
China, Japan, USA, Switzerland, Netherland. But
these are very rarely used in India. According to
my view Energy Department of India should think
about the installation of these transformers in our