Regarding whether the static grounding main line shares the same system as the lightning protection grounding
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Article 6.2.3 of the General Guidelines for Preventing Static Electricity Accidents states that static electricity protection grounding wires shall not use the power supply neutral wire, nor shall they be shared with lightning protection grounding wires. According to Clause 4.6.1 of the \"Code for Design of Static Electricity Grounding in Petrochemical Industries\", the static electricity grounding systems for wires and grounding electrodes should be considered together with grounding systems for other purposes, and arranged in a coordinated manner. The protective grounding main wire used for protecting against lightning induction can be utilized as an electrostatic grounding main wire; otherwise, a separate electrostatic grounding main wire and grounding electrode must be installed. How should we understand the above two points?
Direct lightning strike and lightning induction are two forms of discharge; they do not conflict with each other
Thank you! If a building is grounded simultaneously to protect it against direct lightning strikes and induced lightning, in such a case the static electricity conductors must be installed separately, right? Apart from separate lightning rods, it’s now rare to use separate grounding systems for protecting against direct lightning strikes and induced lightning
In the case of overall grounding for lightning protection, since it is already grounding for induced lightning, as long as it is not independent grounding for direct lightning strikes, they can share the same ground, right?
Protection against direct lightning strikes usually involves external lightning protection systems, while the main lines for static electricity grounding are generally located indoors; internal lightning protection is designed to be isolated from the external systems. In the end, it will be connected to the main grounding grid without any problem; just make sure not to connect it to the main lines designed for protecting against direct lightning strikes.
Now, except for one type of lightning protection building where the direct strike lightning part is independently grounded, all others share a common grounding system