Lightning Protection System Design: IEC 62305 in 5 Steps
Lightning protection system design to IEC 62305: risk assessment, protection level, rolling sphere radii, down conductors and where SPDs belong.
Blogs
SPD Thermal Stability: Safe Failure Explained
SPD thermal stability explained: what a thermal test checks, how thermal overload protection works, and why a disconnected SPD must be replaced.
How to Test a Surge Protection Device (and Why a Multimeter Isn’t Enough)
Learn how to test a surge protection device, what a multimeter actually confirms, the insulation-test mistake most guides get wrong, and when to replace.
IEC 61643 Explained: Which Part Applies to Your SPD
IEC 61643 is a family, not a single standard. Find out which part covers AC, DC, PV and signal SPDs, and what the 2025 edition of Part 11 changed.
SPD parameters explained: how to read a surge protection device datasheet
Most SPD datasheets lead with the biggest number on the page, and for a Type 2 device that number is
Verify a Surge Protection Device Certificate Before Buying
Verify a surge protection device certificate against its model, ratings, test report and issuing database before placing an order.
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.
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.