Power supply voltage is higher than the rated voltage transformer, the transformer itself and its load will have adverse consequences

If the supply voltage is higher than the rated voltage of the transformer, the transformer itself and its load will have adverse consequences. Typically, the transformer  electri cenergy meter  at rated voltage, the magnetic flux density in the core close to saturation. If the supply voltage is higher than the rated voltage, the excitation current will rapidly increase, the power factor decreases. In addition, the voltage is too high and may burn out the transformer windings. When the power supply voltage 105 exceeds the rated voltage, the waveform of the potential  power transformers  large distortion occurs, it contains more high-order harmonic component, the maximum potential will increase, causing damage to the winding insulation. On the other hand, the supply voltage is too high, the output voltage of the transformer will increase accordingly, which will not only lead to electrical equipment overload, over-voltage, but also reduce the life of electrical equipment, even when serious breakdown of insulation, burn bad equipment.