12
Mar
The relative density is the ratio of the weight of a volume of oil, the weight of an equal volume of water. Since these densities vary with temperature, it is necessary to make a correction. The specific gravity of a mineral insulating oil influence the heat transfer reasons, and may be required to determine specific applications. in certain cold climates, ice may form within the transformer de-energized exposed to temperatures below 0 ° C and the maximum oil relative density used in such equipment must have a value that ensures that the thread does not float in the oil at any temperature this could reach.
