What Happens When A Constant Voltage Transformer Is Overloaded?

When 3 phase constant voltage transformer operates under overload, the current borne by its windings will far exceed the design rating, severely challenging the insulation between the internal phases. With the accumulation of thermal stress, the withstand voltage between the windings decreases, potentially leading to a direct phase-to-phase short circuit. Once a phase-to-phase short circuit occurs, constant voltage transformer for home not only generates extremely high short-circuit currents but also causes mechanical deformation of the winding structure and thermal degradation of the insulation material.