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What is SPD energy coordination? Dec 17 , 2025
The so-called energy coordination means that when multiple levels of SPDs or protective elements have different discharge capacities and are used together, the lightning current must be reasonably distributed to ensure that the SPDs or elements with smaller discharge capacities are not damaged. As shown in the figure below, SPD1 has a high discharge capacity and a high residual voltage, while SPD2...
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Now SPD monitoring has gone far beyond simple "on/off" indications. What intelligent directions is it developing towards? Mar 12 , 2026
Traditional SPD monitoring only provides a dry contact signal based on a mechanical disconnector, which is a typical "post-failure alarm"—it informs the user that the SPD has completely failed and needs to be replaced. Modern intelligent monitoring modules, however, utilize built-in microprocessors and sensors to transform the SPD from a passive protection component into an intelligent node capabl...
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For SPDs used in high-altitude areas, the electrical clearance needs to be increased. How does the GB/T 18802.11 standard reflect this requirement in testing and certification? Apr 28 , 2026
The GB/T 18802.11 standard explicitly acknowledges the influence of altitude on electrical clearance insulation strength and incorporates this through an "altitude correction factor" in the testing conditions. The standard typically uses 2000 meters as the baseline altitude. For surge protective devices (SPDs) claimed to operate normally at higher altitudes (such as 5000 meters), the testing requi...
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SPD Fortifying the Electrical Safety Line | Anhui Jinli SPD May 21 , 2026
As a specialist deeply rooted in the field of lightning protection safety—and with two decades of industry expertise—Anhui Jinli has launched a comprehensive product portfolio grounded in professional technology and guided by market demand. Featuring a full range of offerings—including power, signal, photovoltaic, and energy storage SPDs—and complemented by standardized grounding resistance monito...
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