In the thunderstorm weather, generally large tanks store a large number of flammable, combustible oil, in the outside open environment, once struck by lightning, may occur serious fire and explosion accidents, so that the tanks are damaged. When considering the installation of electric accompanying heat, when the tank is subjected to lightning induction, it will produce induced electromotive force and electric current on the metal conductor if the contact resistance of a certain point on the conductor is large or when there is a gap, it will produce a blazing hot part or electric arc.

 　　             When the thundercloud on the earth objects on the induction of anisotropic charge, thundercloud discharge, in the earth and relatively insulated objects on the electrostatic charge into a free charge, through to the earth on the object has a large local resistance or there are small gaps, but also produces a blazing part of the arc after the sparks. Therefore, the lightning protection of the tank grounding is extremely important.

 　　Many users are worried about whether the electric accompanied by the heat in the lightning weather is safe? The electric accompanies the heat itself to have a layer of shielding layer in the structure, adopts the tinned copper wire or other metal wire weaving, is used to ground, prevent the leakage of electricity, the electric accompanies the heat to ground the resistance is small, can be safe to lead the lightning into the earth, to ensure its safety performance.