Power Isolation Transformers

Transformer core flux and the applied voltage. The excitation current of the current will increase as the load increases. Voltage stabilizer does not saturate the load increases, the coil resistance loss will increase, exceeding the rated capacity of the heat generated by the coil can not shed a timely manner, the coil can damage if you are using a superconducting coil is determined by material circuit breakers, the current does not increase causes fever, but also magnetic flux leakage inside the transformer impedance caused, but the current increases, the output voltage will drop, the greater the current, the lower the output voltage, the output power of the transformer can not be infinite. If you had said, no impedance transformer, then when the  mcb circuit breaker through the transformer will produce a particularly large electric power, it is easy to damage the transformer coil, although you have a power transformer but not with the infinite. Can say, with superconducting materials and the development of the core material, the same volume or weight of the transformer output power will increase, but not infinite!