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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...
- Surge Protection Device
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- jinli lightning protection device
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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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