A silica gel breather is a cylinder-type container. Which is fitted into the conservator tank by the barrel. The temperature of the insulating oil in the transformer rises whenever electrical power enters the transformer.
As a result, the number of oil increases. As the oil level rises, the air inside the oil tank in the conservator will come out. When the supply in the transformer decreases, the amount of oil in the tank of the conservator decreases, and air enters the tank again.
Humidity is naturally present in the air. If this moisture enters the oil in the air transformer, it can cause extensive damage. The most common method of filtering air from moisture is called the silica gel breathing method. The silica gel for the transformer is connected to the conservator tank through a breathing pipe.
Construction of silica gel breather:
Silica gel is part of the respiratory function of the transformer. This is nothing but a tank of silica gel which has benefited the respiratory function of the transformer. Silica gel is a very good absorber of moisture.
The working efficiency of silica gel is very high. It can operate smoothly even in temperatures below -40oC. This silica gel works comfortably in the cold season of -35oC unless a large amount of gel is used.
These people can understand this by the figure shown below.
The working method of silica gel breather:
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