This specification specifies the performance requirements, test methods and quality assessment procedures for metal oxide varistors (MOV) with reliability indicators. These MOVs are installed in power supply, communication and signal systems below AC 1000V (50/60Hz, effective value) or DC below 1500V to protect equipment and personnel from high transient voltage hazards and improve the immunity of protected equipment. Spend. This specification applies to metal oxide varistors, including thermally protected metal oxide varistor (TDMOV) with built-in thermal disconnector. Not applicable to components composed of metal oxide varistors and other overvoltage protection components.
T/CECA 27-2017 history
2019T/CECA 27-2017 General specification for metal oxide varistors with reliability specifications