Which issue is NOT typically associated with dry type transformers?

Dry type transformers are designed to eliminate the use of flammable liquids as a cooling medium, which makes them inherently less flammable compared to oil-filled transformers. This characteristic is one of the advantages of dry type transformers, particularly in regards to safety in residential and commercial environments where the risk of fire needs to be minimized.

The other options represent concerns typically associated with dry type transformers. For instance, they can generate noise during operation due to the electromagnetic forces acting on their windings. Additionally, dry type transformers often have limited voltage ratings when compared to oil-filled transformers, which can handle higher voltages due to their insulation properties. Furthermore, dry type transformers may require higher maintenance due to factors such as dust accumulation or the need for regular cooling system checks, which can lead to increased operational downtime if not managed properly.

Thus, the lack of flammability is a significant reason why this option does not apply when discussing issues commonly associated with dry type transformers.