There are many factors that can affectlead type transformernormal use. In addition to the quality of the transformer itself, the use environment of the transformer also has a great influence on the service life of the transformer.
After a long period of transformer load operation, the problems between the transformer windings will continue to increase, which will seriously affect the use of the transformer. According to the heat resistance characteristics of the insulation material, the thermal life of the transformer is determined by the hot spot temperature. When the hot spot temperature cannot be measured directly, the average temperature of the winding and reasonable design can be used to ensure the hot spot temperature of the winding. Typically, the primary insulation of a toroidal transformer isBClass insulation, specified operating temperature130Degree. During operation, when the winding temperature of the transformer exceeds the ambient temperature, the temperature rises, and the apparent power is higher than the ambient temperature20-50Degree.
If the transformer runs at high temperature for a long time, it will shorten the life of the internal insulation, lose its proper insulation function, and cause accidents such as breakdown; The winding insulation is seriously aging, affecting the service life. Therefore, it is impossible to avoid high temperatures as much as possible, and the time should not be too long.
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