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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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The roles for "impulse breakdown voltage" and the "DC breakdown voltage" in gas discharge tubes in SPDs? Jul 30 , 2026
This is determined by the physical characteristics of the GDT and its different roles in the circuit. Impulse breakdown voltage (e.g., for a rise rate of 1 kV/μs): This parameter characterizes the response speed of the GDT to fast transient overvoltages. Standards require high stability (low dispersion) because GDTs are often used as primary protection and need to operate quickly and predictably t...
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Key Points for Selecting Wire Diameter for SPD Surge Protective Devices Aug 13 , 2026
Why Wire Diameter Matters? When a surge occurs, the connecting conductors serve as the path for discharging lightning current into the ground. Insufficient conductor gauge can lead to wire burnout, SPD failure, or even fire; conversely, a properly sized conductor ensures that surge current is rapidly and safely diverted to the ground. Conductor sizing is subject to specific requirements under nati...
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