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She thought of the devices they’d tested last spring: compact modules for remote tide sensors. The retrofit contract hinged on proving resistance to coastal humidity cycles. The new Annex C was the lever that might push their proposal across the threshold. She imagined the sensors on the cliffs, blinking little green lights in fog and spray, their housings unchanged but their inner lives hardened against the salt.
The 2018 version incorporates the updated surge arrester classifications introduced in IEC 60099-4:2014 , providing a clearer distinction between high-voltage and low-voltage applications.
IEC 60099-5 PDF Update: Comprehensive Guide to Surge Arrester Application (2026 Update)
