What is the proper temperature of oil immersed transformer
Writer： Hengfeng you electric Time：2023-05-09 views：times
The operation and use of oil immersed transformer need a certain temperature. Only when the temperature is appropriate, the oil immersed transformer will play a great role and have greater efficiency. Although the temperature of oil immersed transformer is constantly changing, its temperature must be appropriate. So what's the proper temperature?
Oil immersed transformer
1. When purchasing oil immersed transformer, the model parameters should be understood. Relative to the temperature rise of the air around the transformer, the transformer manufacturer usually has an internal control standard of 65 degrees, which refers to the average temperature rise of the winding rather than the hot spot temperature rise, and is considered according to the class A insulation grade (105 degrees). However, it is generally controlled below 65 degrees in transformer design.
2. In addition, we should pay attention to the national standard of transformer: when the ambient temperature of oil immersed transformer is high, the annual average temperature is 20 degrees, the monthly average temperature is 30 degrees and the high temperature is 40 degrees. These parameters will also affect the use of transformer.
3. There are some exceptions. For example, the winding is difficult to detect for ordinary users, but the top oil temperature can be detected. Therefore, the transformer manufacturer has specified the temperature rise of the top oil layer, which is 55 degrees. Of course, it will also be controlled below 55 degrees during design and manufacturing, and in this case, the winding temperature rise will not exceed 65 degrees.
4. In addition, some of our relevant power departments have also made some requirements for the working temperature of the transformer: that is, without considering any other factors, the top temperature of the transformer oil shall not exceed 85 degrees. This can ensure that the winding hot spot temperature of the transformer does not exceed 98 degrees, which can better protect the average winding temperature from exceeding 85 degrees. Providing more temperature parameters can effectively protect the normal and reasonable temperature of oil immersed transformer.
The above are the temperature and main temperature requirements of common oil immersed transformers for your reference. The temperature of oil immersed transformers should be measured at all times, so as to ensure the safe and stable operation of oil immersed transformers. For more knowledge about oil immersed transformers, please visit our website for details!
