High-quality Low-noise Low-no-load loss Hgh-quality Iron Core

   In the normal operation of the transformer, the electric field formed between the live windings and leads and the fuel tank is an uneven electric field, and the iron core and its metal parts are in this electric field. Since the potential of electrostatic induction is different, so that the core and its metal parts have different levitation potential, when the potential difference between the two points reaches a point where the insulation can be broken through, a spark discharge occurs. This discharge is able to decompose the oil of the transformer and damage the solid insulation. In order to avoid this, both the core and its metal parts must be reliably grounded.

  The core must be grounded a little. When the core or other metal components have two or more points of grounding, a closed loop will be formed between the grounding points, forming a circulation, the current can sometimes be as high as tens of amperes, which will cause local overheating, lead to oil decomposition, and may also make the grounding piece fuse, burn the core, these are not allowed. Therefore, the core must be grounded, and it must be grounded a little.