Temperature Rise of Epoxy resin dry-type transformers

resin dry-type transformers

The temperature rise of the transformer refers to the difference between the temperature of the transformer winding and the ambient temperature. In general, the temperature rise of epoxy resin dry-type transformers is lower than that of oil-immersed transformers, which is mainly due to the better heat dissipation performance of epoxy resin insulation materials.

To ensure the reliable operation of epoxy resin dry-type transformers and extend their service life, it is necessary to control their temperature rise within a reasonable range. According to relevant standards, the temperature rise of the transformer should not exceed 125 degree for Class F insulation materials and 145 degree for Class H insulation materials.

In order to accurately measure the temperature rise of epoxy resin dry-type transformers, various temperature measurement methods can be adopted, such as thermal resistance, temperature sensor, infrared thermometer, etc. However, due to the complexity of the transformer structure and the uneven distribution of temperature, it is necessary to use multiple temperature measurement points and calculate the average value to obtain the accurate temperature rise of the transformer.

dry-type transformers
In conclusion, the temperature rise of epoxy resin dry-type transformers is a critical indicator that needs to be monitored and controlled during their operation. Through the comprehensive consideration of various factors, the reasonable temperature rise of the transformer can be ensured, which can effectively improve its reliability, durability, and safety.