Smart IoT Monitoring System for Surge Protective Devices (SPDs)

A smart monitoring system with internet connectivity opens up the possibility to bring surge protective devices (SPDs) into the internet of things (IoT). Each voltage or current impulse at the SPD is measured and the measurement data is transferred into a cloud based storage. The cloud frontend opens many options to analyze the measured data and to derive the actual status of the SPD. By assessment of the impact of all stress events the pre-damages of the arrester can be determined to evaluate its actual “State of Health” (SoH). Even an estimation of the residual lifetime becomes feasible. With all this collected information maintenance requirements become predictable and maintenance work can be planned much more efficiently.