Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV)
STANDARD published on 1.11.2024
Designation standards: ČSN EN IEC 61643-332
Classification mark: 341392
Catalog number: 519914
Publication date standards: 1.11.2024
The number of pages: 72
Approximate weight : 216 g (0.48 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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