Field Gas Screening Before Laboratory DGA on Transformers
How to run a transformer fleet walk-down with Rapidox 1100 and 3100: DGA prioritisation, protocols and traffic-light decisions for CHP and plant substations.
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Read in RussianThe DGA lab queue at a large CHP or plant substation can span weeks. Field gas screening with Rapidox does not replace IEC 60599 but gives priority before the full chromatograph report.
Tools: Rapidox 1100 on conservators, Rapidox 3100 on headspace above oil samples.
Walk-down (half day): load + oil T → O₂ on conservator → headspace CO/CO₂ if oil sampled → green / yellow / red → expedite lab for red, plan repair for yellow O₂-only rise.
Combine with bay monitoring, cooling vibration and DGA companion methods.
Scope: power plants and industrial MV — not oil & gas.
Request an audit of your transformer fleet screening protocol.
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