Lightning Protection System: From Air Terminals to SPDs
How a lightning protection system works end to end: IEC 62305 zones, air terminals, earthing, and the SPDs that limit surges reaching your equipment.
Blogs
How Does a Lightning Conductor Work? [With Diagram]
How does a lightning conductor work? Follow the current from the rooftop air terminal through bonding and down conductors to earth.
Solar DC SPD Connection Diagram: The Right Way to Wire It
Solar DC SPD connection diagram done right: parallel PV+/PV- to earth, U-type vs Y-type, where to install it, and the lead-length rule that matters.
Industrial Surge Protection: How to Choose the Right SPD
Choose industrial surge protection by voltage, SPD type, installation point and surge rating, with IEC 61643-11 product examples.
SPD Coordination: How to Design a Cascade That Actually Works
SPD coordination explained from IEC 61643-12: what the 10-meter rule really means, how to match Up across stages, and when Type 1+2 SPD solves it.
Temporary Overvoltage and SPD Safety: Why Your SPD Becomes the Victim
A lost neutral can push up to 400 V across your SPD. A temporary overvoltage is what it was never built to stop — how to make yours fail safely.
Lightning Protection Zone (LPZ): Concept and SPD Selection Guide
A lightning protection zone (LPZ) is a defined area within or around a structure where the lightning electromagnetic environment is
SPD vs Circuit Breaker: Differences, Coordination and Installation
SPD and circuit breakers protect against different threats. Learn how they coordinate, which SCPD to choose, and the correct installation order in a panel.
