What does short circuit voltage of a transformer depends on?

When the primary winding of a transformer experiences a short circuit, a voltage is generated across the secondary winding. A crucial factor in the design of transformers is the short-circuit voltage, which is commonly represented as a percentage of the transformer's rated voltage.

The transformer's design, the type and number of winding turns, the material and design of the core, and the frequency of the input voltage are only a few of the variables that affect a transformer's short-circuit voltage. In general, when the frequency of the input voltage rises, the short-circuit voltage will as well.

The amount of leakage flux that is present in a transformer's core is another element that influences the short-circuit voltage of the transformer. When a portion of the magnetic field produced by the main winding does not connect with the secondary winding, leakage flux develops. As a result, transformers with lower leakage flux levels will have larger short-circuit voltages.

The transformer's impedance, which is a measurement of the transformer's resistance to the passage of electric current, has an impact on the short-circuit voltage as well. Low-impedance transformers will have a higher short-circuit voltage than those with high impedance, and vice versa.

Overall, a transformer's short-circuit voltage is a complicated metric whose operation and design are both affected in various ways.