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Active standard | Published: 01/11/2024
ČSN EN IEC 61643-332
Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV)
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Detail information
Designation: ČSN EN IEC 61643-332
Publication date: 01/11/2024
Pages: 72
Country: Czech technical standard
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This part of IEC 61643 describes the theory of operation, principles for the selection and application of MOVs to be connected to power lines or telecommunication or signalling circuits, up to 1 000 V AC or 1 500 V DC. These SPCs are designed to protect apparatus or personnel, or both, from high transient voltages.This document applies to MOVs having two electrodes and voltage dependent elements with or without disconnectors. It does not apply to assemblies that include MOVs and their influence on the MOV´s characteristics.
This standard specifically discusses the zinc-oxide type of MOVs
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