... : JH3000 Series Intelligent expert to detect inner faultsof SF6 circuit breaker, instrument transformer,switchgear, GIS (Gas ... Substation), bushing,surge arrester, transformer and other SF6 electrical equipments --Detect SF6 decomposition products SO2+SOF2, H2S, CO, ... ----Patented high technology device, precise & accuracy ----Detect SF6 electrical equipments faults at their earliest stage. SO2+SOF2 ...