Applications of Equipotential Connectors in the Industry

In the construction industry, equipotential connectors are used in lightning protection systems for residential and commercial buildings. Key connection points include structural steel reinforcement, water piping, HVAC systems, metal elevator shafts, and distribution box enclosures. In accordance with the GB 50057-2010 standard (*Code for Design Protection of Buildings Against Lightning*), recommended conductor specifications are ≥16 mm² for copper conductors in residential buildings and ≥25 mm² for commercial buildings. Installation requirements mandate the bonding of basement water pipes and the integration of the lightning protection grounding system into the main grounding grid.
In industrial facilities-such as those in the steel, petrochemical, and power sectors-equipotential connectors are used for pipe rack supports, oil pipelines, equipment mounts, power cable trays, industrial control cabinets, and the housings of communication and automation systems. Requirements include a connection resistance of ≤0.1 Ω and a corrosion resistance lifespan of ≥10 years. Specific installation practices include using spark-free plug-in connectors in hazardous (explosive) areas and applying protective coatings or insulation wrapping to conductors in corrosive environments.
In the telecommunications and data center sectors, equipotential connectors link network switches, server cabinets, access equipment, shielded cables, metal data transmission cables, UPS housings, and air conditioning units. Requirements dictate strict separation and interconnection between signal grounds and protective grounds, referencing standards such as YD/T 5098 (*Technical Requirements for Lightning Protection of Communication Bureaus/Stations*) and TIA-607-C (*Generic Telecommunications Bonding and Grounding (Earthing) Standard*). Key installation considerations include avoiding ground loops, employing a star grounding topology, and prioritizing near-end grounding when the distance between equipment grounding points is less than 3 meters.
In medical systems and rail transit, equipotential connectors are used to bond the housings of medical equipment such as MRI and CT scanners and patient monitors; local equipotential bonding must comply with the GB 16895.24 standard. In rail transit applications, they facilitate equipotential bonding between power rails, metal signal control boxes, and rail sections; technical requirements include the use of copper busbars with a cross-sectional area of ​​≥50 mm² and periodic testing of contact resistance.