Components for low-voltage surge protection – Part 331: Performance requirements and test methods for metal oxide varistors (MOV)
|Publication Date:||1 March 2020|
|ICS Code (Potentiometers, variable resistors):||31.040.20|
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 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.