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Overview IEC 61643-331:2020 - Components for low-voltage surge protection - Part 331: Performance requirements and test methods for metal oxide varistors (MOV) - is the third edition (technical revis…
Overview IEC 61643-331:2017 - Components for low-voltage surge protective devices - Part 331 - specifies performance requirements and test methods for metal oxide varistors (MOV). It applies to two‑e…
What is BS EN IEC 61643 ‑ 331 about ? BS EN IEC 61643 ‑ 331 is the 331st of components for low-voltage surge protection in multi-series. BS EN IEC 61643 ‑ 331 is a test specification for metal oxide…
1 Scope This part of IEC 61643 is a test specification for metal oxide varistors ( MOV ), which are used for applications up to 1 000 V AC or 1 500 V DC in power line, or telecommunication, or signal…