Differences Between IEC 61643-11 & IEC 61643-31 SPD Certification Standards

2023-10-09


IEC 61643-11: 2011


IEC 61643-11: 2011 standard is applicable to surge protective devices (SPD) against direct and indirect effects of lightning or other transient overvoltages. These surge protective devices are used to connect 50/60Hz AC power circuits with rated voltage up to 1000V r.m.s. The standard methods of performance characteristics, testing and evaluation are established. These surge protective devices contain at least one nonlinear component for limiting the surge voltage and diverting the surge current.


IEC 61643-31: 2018


IEC 61643-31: 2018 standard is applicable to surge protective devices (SPD) against direct and indirect effects of lightning or other transient overvoltages. These surge protective devices are used to connect photovoltaic installations such as generators and inverters with rated voltage up to 1500VDC. These surge protective devices contain at least one nonlinear component for limiting the surge voltage and diverting the surge current. 



surge protective devices