Usually the life of the transformer is called 20 years, is there any GB requirements? If there is a specific in that standard inside. Thank you for your thanks
3, this life is in the case of rated operation (rated capacity to run). How much time is the transformer running? So in normal circumstances, this 20 or 30 years is fully able to do.
4, now, how many transformers are life and scrapped? Often the life cycle has not arrived, the transformer is eliminated. The reason is: 1) economic development is too fast, the transformer to increase the capacity, and to replace the transformer. 2) Transformer technology development fast, power transformer almost every 3-5 years out of a new product, the loss is also constantly in the drop. For these reasons, the transformer is less than 20-30 years to be updated. So no one is very concerned about this life.
Guidance of the national standard for you - Guidance on the load of oil - immersed power transformers GBT 15164-1994.
Transformer machinery industry standard GB / T 17468-1998 "power transformer selection guide" in Article 8 transformer thermal aging rate and life of the "transformer life is generally 20 years."
I can only give you in the transformer industry, we all agree that the argument:
1, before the transformer, the oil inside the transformer and air direct contact. As the transformer in the thermal expansion and contraction, the oil up and down fluctuations, we called the transformer in the breath, an increase of oil and air contact opportunities. The moisture enters the inside of the transformer. So that insulation is reduced. Under normal operation and maintenance, the transformer is guaranteed to have a life span of 20 years.
2, the current transformer, to take a fully sealed structure, oil pillow with sealed pocket, so that the transformer oil is not in direct contact with the air. Under normal operation and maintenance, the transformer life is 30 years
Transformer life span, no national standard. Oil-immersed transformers Ye Hao, dry-type transformers Ye Hao, they all have their own load guide (a guiding technical standards). Above some theoretical calculations (you can look for a look). But the life of the transformer and many factors, it is impossible to Yigai, such as oil-immersed transformer has 6 degrees, that is, the transformer running temperature increased by 6 degrees, its life reduced by half. Every 6 degrees lower its life doubled, and so on.
