How should the lightning induction protection device in this sentence be understood? What components are included in lightning induction protection devices?
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(18) For metal pipes arranged in parallel with a spacing of less than 100 mm, or metal pipes that intersect at a distance of less than 100 mm, lightning induction protection devices should be installed; such devices can be combined with anti-static devices. How should we understand the lightning induction protection device in this sentence? What components are included in lightning induction protection devices?
Protection against lightning induction: (1) Grounding the metals inside the building to be protected is the main measure for preventing lightning induction. It is recommended that the main metal components in buildings, such as equipment enclosures, pipes, and frames, be connected as close as possible to the lightning protection grounding system or the protective grounding system of electrical equipment. (2) For parallelly laid pipes, frameworks, and long metal parts of cable exteriors, when the clear distance between them is less than 100 mm, metal wires should be used for bonding, and the spacing between the bonding points should not exceed 30 m ； When the cross-net distance is less than 100 mm, the intersection should also be bridged.