IEC 61643-331:2020 

Components for low-voltage surge protection - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)

Note: a redline version of this publication exists
IEC 61643-331:2020 RLV

CHF 

Do you need a multi-user copy?

CHF 

Preview

Abstract

IEC 61643-331:2020 is available as IEC 61643-331:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61643-331:2020 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 lines, or telecommunication, or signalling circuits. They are designed to protect apparatus or personnel, or both, from high transient voltages. This document applies to MOVs having two electrodes and hybrid surge protection components. This document also does not apply to mountings and their effect on the MOV’s characteristics. Characteristics given apply solely to the MOV mounted only in the ways described for the tests. This third edition cancels and replaces the second edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- a Varistor MCOV rating assurance test;
- an energy rating test (2ms);
- revised Dielectric strength and insulation resistance tests.

Look inside


Additional information

Publication typeInternational Standard
Publication date2020-03-19
Edition3.0
Available language(s)English, English/French
TC/SCTC 37/SC 37B - Components for low-voltage surge protectionrss
ICS31.040.20 - Potentiometers, variable resistors
Stability date  2023
Pages89
File size3679 KB

The following test report forms are related:



Share your publications

Learn how to share your publications with your colleagues, using networking options.

Payment information

Our prices are in Swiss francs (CHF). We accept all major credit cards (American Express, Mastercard and Visa), PayPal and bank transfers as form of payment.


Keep in touch

Keep up to date with new publication releases and announcements with our free IEC Just Published email newsletter.

Contact customer services

Please send your enquiry by email or call us on +41 22 919 02 11 between 09:00 – 17:00 CET Monday to Friday.