Learning path
From lightning concepts to low-voltage power-line SPD products—a structured guide for engineers, panel builders, and local partners.
18. Common Mistakes & Failure Modes · Page 1 of 7
The number-one field killer of performance.
Equipment still fails despite "SPD installed."
1–2 m coiled leads adding inductive voltage.
Relocate SPD or rebuild connections short and straight; verify PE landing.
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Factory-backed SPD and access control products built for real-world electrical and security demands.
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