In this episode, we explore why keeping moisture out of Generator Step‑Up (GSU) transformers is critical to reliability and safety. Join us as we map out:Primary Water Ingress PointsHow breathers, bushings, gaskets and inspection plates can let moisture inside—even in short timeframes.Consequences of Excess Moisture• Electrical‑level risks: loss of dielectric strength & spikes in partial discharge• Chemical‑and‑physical degradation: accelerated cellulose aging, acid by‑products & corrosive sulfur reactions• Thermal challenges: reduced oil conductivity leading to dangerous hotspotsActionable Moisture ThresholdsClear ppm‑based bands with recommended inspection and monitoring intervals—from annual checks below 10 ppm to weekly interventions above 30 ppm.Inspection & Diagnostic ToolboxStep‑by‑step guide to visual seal inspections, infrared thermography, ultrasonic leak‑detection, DGA and frequency‑domain spectroscopy for pinpointing moisture.Sampling & Analysis Best PracticesWhy Karl Fischer titration is the gold standard, plus correct bottle handling, valve purging and the role of continuous on‑line sensors.Preventive & Corrective PlaybookFrom immediate seal repairs and breather regeneration to medium‑term dry‑out procedures and long‑term maintenance scheduling.Whether you’re a risk engineer, maintenance professional or underwriter, this episode delivers a structured, example‑driven roadmap for keeping your transformers dry—and your operations running at peak performance. Tune in now!

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