The power of the transformer

The transformer iron heart magnetic flux is related to the exerted voltage. In the current, the excitation current does not increase as the load increases. Although the load is not saturated, the resistance loss of the coil will increase, exceeding the rated capacity due to the heat generated by the coil cannot be dispersed in time, the coil will be damaged.
 

If the coil is composed of superconducting materials, the current increase will not cause fever, but there is also impedance caused by leakage inside the transformer. It cannot be infinite. If the transformer is not impedance, then when the transformer flows through the current, it will generate a particularly large electric power, which is easy to damage the transformer coil. Although the power is infinite, it cannot be used. It can only be said that with the development of superconducting materials and iron -hearted materials, the output power of the same volume or weight transformer will increase, but it is not infinite!