prBAS EN IEC 61643-332:2025

Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV)

General information

Status:Project

Number of pages:130

Adoption method:Proglašavanje

Language:engleski,francuski

Edition:1.

Realization date:17.12.2024

Forseen date for next stage code:23.12.2024

Technical committee:BAS/TC 8, Insulation co-ordination, high-voltage testing and instrument transformers

ICS:

31.040.20, Potentiometers, variable resistors

Abstract

IEC 61643-332:2024 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 dependents 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.

Lifecycle

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Original document and degree of correspondence

EN IEC 61643-332:2024, identical

IEC 61643-332:2024, identical

Work material

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