Silica-Gel Breather

When Transformer is loaded or unloaded, the oil temperature inside the transformer tank rises or foots, Accordingly the air volume inside the tank changes, by either sucking in or pushing out the air , The Phenomenon is called “Breathing” of the transformer . The air which is being sucked in contains either foreign impurities and /or Humidity which changes dielectric strength of transformer oil. Hence, it is necessary that, the air entering into the transformer is free from moisture & foreign impurities.

MAINTENANCE

The Breather is connected to an outlet pipe of the Conservator Vessel and the air which is being sucked by transformer is made to pass through the Silica Gel Breather to dehumidify the air and to remove foreign impurities. The Silica Gel which is filled in the Breather is hard blue Crystals, which has considerable absorption power for moisture. When it gets saturated with moisture, its changes it colour to pinkish white, For Proper dehumidification of air , It is absolutely necessary that this charge of Silica Gel is re-conditioned from pinkish white to deep blue by heating it to a temperature of 2000C.The air, which is passed through Gel is first made to pass through the oil compartment of Breather. This oil removes all foreign impurities from air which enters the Gel compartment. Hence Oil sealed type Silica Gel Breather will keep the oil properties constant, hereby ensuring proper working and hence longer life of the transformer.

ADVANTAGES OF CLEAR VIEW DESIGN OVER WINDOW TYPE

• Because of excellent visibility of entire mass of Silica Gel (Due to transparent compartment) Change in colour of Gel in any part of the mass is clearly visible, even from a distance, as against very very poor visibility in window type – design.
• The entire oil cup is also transparent Hence, Change in the level of Oil as well as any sedimentation in oil is clearly visible. as against almost invisibility in window type.
• The overall wt. of the Breather is much lighter than the Convention Window type Breathers.