What is the main threat to a transformer's integrity?

Heat is indeed the main threat to a transformer's integrity. Transformers operate by converting electrical energy from one voltage level to another, and this process generates heat as a byproduct. Excessive heat can lead to a variety of issues within the transformer, including the degradation of insulation materials, which are crucial for maintaining the proper functioning and safety of the transformer. Over time, high temperatures can cause insulation failure, leading to short circuits and potentially catastrophic failures.

While moisture can pose a risk to transformers by facilitating corrosion and affecting insulation, and dust can interfere with cooling and attract moisture, the primary concern that engineers address is heat management. Magnetic interference, while important in the design and placement of transformers, does not typically compromise their structural integrity in the same way that excessive heat does.

In summary, managing and dissipating heat effectively is vital for ensuring the longevity and reliability of transformers, making it the most significant threat to their integrity.