Phase 3IEC

Surge Arrester / SPD Sizing Calculator

IEC 61643-11 / IEC 62305 / IS 13573

Select surge protective device (SPD) for LV systems: protection level, discharge current, installation location and lightning protection zone coordination.

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Results are for guidance only. All calculations must be verified by a qualified electrical engineer before implementation. Always refer to the applicable local standard and authority having jurisdiction.
Standard:

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The Surge Arrester / SPD Sizing Calculator calculator is being built with full IEC 61643-11 / IEC 62305 / IS 13573 compliance. Input form, calculation engine and PDF export will be available here.

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