Ground Potential Counterattack Solutions

A. For the system using opposite grounding, that is to say, there are more than two independent grounding grids in a computer room. For example, one grounding grid uses steel bars in the building frame as grounding grids, and the other system is independent grounding grids, then when When the distance between the two ground grids is less than the safety distance against ground potential counterattack, it is necessary to use an "equipotential connector" for equipotential connection between the two ground grids. The function of the equipotential connector is to ensure that the two grounding grids are not connected and do not interfere with each other under normal working conditions.

When a grounding system is struck by lightning, the GI 1000-5 equipotential connector makes the two grounding grids instantly form an equipotential to eliminate the Damage caused by this transient high potential within the device due to line-to-line voltage differences.

B. According to the requirements of Chapter VI of GB 50057-94 (2000) "Code for Design of Lightning Protection of Buildings", metal water pipes, communication cables and power cable armored sheaths or cable metal pipes and other external pipelines, all water pipes and cables should be Buried into the equipment room, the water pipe and cable armored sheath and protective metal pipe should be grounded when entering the equipment room, the cable should be armored cable or buried into the equipment room through the metal pipe.

For grounding wires with long wiring distances in the building, such as power PE wires, in the equipment room with higher requirements, the "equipotential connector of the equipment room" can be used to connect the AC working ground, DC working ground, anti-static and protective grounding in the equipment room. Equipotential connection is carried out inside to ensure that the precision system equipment is not disturbed under normal working conditions, and no breakdown occurs in the equipment when there is transient overvoltage.