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 One, not grounding;

   Two, grounding;

   Three, Peterson coil grounding;

 Four, four ways via a resistor to ground. The main role of the transformer is grounded:

1, to reduce the risk of a phase to ground. If ungrounded, when there is a touching ground, the ground current is not, the device is still operational, fault may exist for a long time. If a person touches the device leakage current will return to the zero line by the device through the body, at this time, for the human body to withstand almost phase voltage, is very dangerous. When the failure occurred, then zero in the grid all the electrical devices are in a dangerous state. Do not touch the ground while the other two phases, also will increase the voltage on the ground, greatly increasing the risk of electric shock. (Zhongshan strength of professional production and sales of automatic winding machine, winding machine motor, transformer winding machine, CNC routing machines, motor winding machine, single-axis winding machine, wire winding machines, stranding Winder, high-frequency transformer winding machine, multi-axis winding machine, high speed winding machine and other electronic machinery and equipment, for more information please pay attention wechat: zs_shili)

  2, the stability of system potential. Working earthing canpotential stabilization system, limiting system does not exceed a certain range of voltage, reduce the risk of high pressure enters the low-voltage.

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