jc-1 partial discharge detector is a live detection instrument used to detect the ultrasound, ultra high frequency, high frequency, transient ground voltage signals generated from partial discharge of the transformers, gis, sf6 tank circuit breakers, switch cabinets, cables and other power equipment, and represent the state and nature of partial discharge of the equipment. it has the advantages of small size, light weight, strong interference immunity, convenient use, accurate positioning, stable performance and accurate measurement.