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What is "ground potential rise" phenomenon? How it cause damage to electrical and electronic equipment inside and outside the building? Jun 01 , 2026
Ground potential rise is caused by transient high potentials resulting from lightning current entering the ground. When lightning strikes a building's lightning rod or the nearby ground, thousands to hundreds of thousands of amperes of lightning current are discharged through the grounding system. Due to the resistance and inductance of the grounding system, according to U=IR+L·di/dt, the potentia...
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Technical personnel from Jinli Electric are working on the front lines of the Chongqing-Kunming High-Speed Railway Jun 18 , 2026
At the construction site of the Chongqing-Kunming High-Speed Railway, technical engineers from Anhui Jinli Electric have been working tirelessly on the front lines—day and night—to install electrical control cabinets and commission circuitry. With professional expertise and a commitment to craftsmanship, they are fortifying the "nervous system" that controls the railway's power supply. Wear...
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How should the selection and installation strategies of SPDs be adjusted to achieve effective surge protection? Jul 17 , 2026
When grounding conditions are poor, the core principle of SPD application shifts from "low-impedance current discharge" to "equipotential bonding and voltage limitation," and the technical strategy is adjusted accordingly: Prioritize using SPDs with a "3+1" or "1+1" wiring configuration: For TT or TN systems, traditional SPDs may fail to operate effectively due to poor grounding if a low-impedance...
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