When used by the line current, lightning over-voltage shock

Is a stationary electrical distribution transformers. Although the mechanical structure, insulated handle other aspects of general electrical have in common, but because of the rated voltage of the transformer is often very high, especially when used by the line current, lightning over-voltage shock is very likely, if the design or  electric transformer  structure often will result in defective risk of burning. A  electri cenergy meter  often the total transmission and distribution wires road hub, in the event of an accident, it will produce serious consequences. Furthermore transformer parallel operation is often used to ask the parallel operation of two transformers in performance with some of the same points, so the transformer impedance, voltage than the poor.