... inner faultsof SF6 circuit breaker, instrument transformer,switchgear, GIS (Gas Insulated Substation), bushing,surge arrester, transformer and other SF6 ... H2S, CO, HF and moisture in just a single machine or separate composition or any of their combination according to ... product analysis, 2 minutes;Moisture analysis, 3~5 minutes.*Gas flow: Decomposition product test, 200ml+20/min;Moisture test, ...