SCAR 10 - Metal Oxide Surge Arrester Test Set This MOV- metal oxide varistor test system is the perfect device to perform analysis and diagnostics on metal oxide arrestors. It is supplied with a special current clip-on transformer designed for the measurement of current leakage. • On-line diagnostic of metal oxide surge arresters • According to IEC 60099-5 A1 “Diagnostic indicators of metal-oxide surge arresters in service” • Third harmonic analysis of leakage current with compensation • Extensive field experience • Easy, fast and reliable diagnostic method • Safe lightweight equipment • Supplied with C 47-IS clip-on transformer specifically designed to measure leakage current losses in the presence of high electric and magnetic fields