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May 11, 2020   photos  

Conservator Tank. Transformers have a cylindrical tank, known as the conservator tank, mounted on th e roof of its main tank to provide adequate space for expansion of oil within the transformer. When the temperature rises, the volume of oil inside the transformer also increases; thus, it is this conservator tank that acts as a reservoir for the expanded oil. In addition to this, we can also say that a conservator tank it contains oil which balance the oil in transformer when the oil increase due to temperature the oil will store in it as it is mounted on top of the transformer.