Many people may have a question, why are pebbles laid under the transformer? Especially in power generation plants, electrical switchyard and substations. there are pebbles under large oil immersed transformers. What are the functions and functions of the pebbles under the transformers in these places ? These pebbles are mainly stored under the oil storage tank under large oil-immersed transformers. According to relevant standards, there should be an oil storage tank at the bottom of a large oil-immersed transformer, with an area slightly larger than the plane occupied by the transformer and a depth of about 1 meter. pebbles with a diameter of about 10cm should be laid to absorb transformer oil leakage.
1. The area below the transformer is commonly referred to as the unloading tank or accident oil tank; When an accident occurs, such as oil injection or explosion, the oil from the transformer will be discharged into the unloading tank and then flow to the accident oil pool.
2. It is easy to unload the oil by placing pebbles around the transformer, as well as insulation, ease of maintenance, operator inspection, and work.
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