How often does the oil immersed transformer change oil？

The oil change cycle of the oil-immersed transformer varies according to its use, and a fixed time cannot be given.

In general, the initial oil service life of the oil-immersed transformer is 10 years. If the oil quality of the transformer deteriorates within 10 years of use or needs to be replaced for other reasons, the oil should be replaced according to the cycle of operating experience or conditions. It is usually recommended to replace the oil every 5-8 years, and oil chromatographic analysis and oil characteristic testing should also be carried out in order to determine whether the oil needs to be replaced in time.

However, for some important transformers or transformer operating environment is very bad, it is recommended that the replacement cycle is 1-2 years.

In addition, the refueling and refueling time for the transformer is also different, in general, the oil-immersed transformer refueling and refueling time is once or twice a week.

The above content is for reference only, if you need accurate information, it is recommended to consult a professional or check the product manual.