The Effect Of Temperature Difference On The Performance Of Dry-type Transformers

When the operating environment encounters large temperature differences, the internal insulation material and windings of dry type isolation transformer will be affected by stress to varying degrees. Frequent temperature fluctuations may accelerate insulation aging, negatively impacting the long-term stability of the transformer.

Sensitivity of Insulation Performance

dry type lighting transformer The insulation system is prone to molecular structural changes at high temperatures, while low temperatures may cause material shrinkage. Large temperature differences may lead to microcracks forming within the insulation, reducing its withstand voltage. Specifically:

• Stress concentration is easily generated at the interface between the insulating paper and the enameled wire.

• Different rates of thermal expansion and contraction of materials result in changes in local gaps.

• Long-term cyclic action shortens the insulation thermal life, increasing maintenance requirements.

Thermal Stress and Winding Structure

The windings are significantly affected by temperature differences, especially under alternating high and low temperature conditions, where minute movements may occur between coils. dry type step down transformer The difference in the coefficients of thermal expansion between the core and windings leads to increased mechanical stress, resulting in higher vibration and noise levels. Simultaneously, localized hot spots may form, affecting the overall temperature rise control and electrical performance stability of the transformer.