... series, real-time online monitoring of leakage current arrester arrester discharge records of change and understanding of the nine movements. Leakage current in ... with changes in a timely manner to determine the operation of the arrester and the abnormal condition to prevent accidents, improve power system ... JS-8S JSY-8S JSYF9 JSYF9-S JSYF9-SD the counter / monitor of the Polymer Surge Arrester