The demand for maintenance and inspection of transmission lines is increasing globally due to the expansion of renewable energy deployments, measures to combat aging power infrastructure, and the increase in extreme weather events associated with climate change. This product is a clamp-type induction power supply device that extracts power without contact by simply clamping it into the transmission line. It is easy to install and is designed to provide stable and continuous power supply to measuring instruments, sensors, and other field equipment for transmission line maintenance. It is also suitable for supplying power to sensors for Dynamic Line Rating to improve the operational efficiency of power grids.