Articles & Case Studies

Partial Discharge background

High-voltage rotating machines face a major threat from partial discharge (PD), often leading to insulation failure and costly downtime. This paper compares blackout tests with solar-blind UV cameras, offering practical insights for safer, more accurate PD detection and prevention.

Our research examines how partial discharges degrade dielectric materials through chemical and mechanical mechanisms. It highlights molecular bond breaking, cracking, and environmental impacts, offering insights to enhance insulation system longevity and reliability in the face of PD-induced aging.

Certified NETA IV technician Thomas Wire shows how ultraviolet cameras expose insulator faults and corona discharge, complementing infrared inspections to deliver non-intrusive, predictive maintenance and greater substation reliability—captured in a concise, two-video field series.

UV imaging offers utilities a powerful, early-warning tool to detect contamination and prevent insulator flashovers—risks often missed by infrared. Especially in polluted environments, UV cameras enable proactive maintenance and safer, more efficient grid operation.

The DayCor® UV EYE family delivers high-sensitivity corona and arcing detection across diverse industries, supporting continuous substation monitoring, robotic patrols, vehicle-based grid inspections, and real-time rail assessments with reliable, multi-sensor integration in demanding environments.

As electric motors evolve in EVs and aviation, insulation stress and partial discharge risks increase. Advanced UV imaging now enables precise, real-time PD detection—offering manufacturers a safer, more effective solution to ensure motor reliability and performance.

UV imaging is transforming transformer maintenance by enabling early detection of partial discharges. This powerful technology supports better design, manufacturing, and field inspections—helping utilities prevent failures, reduce downtime, and extend transformer life.

Utilities face increasing pressure to modernize inspection processes and manage growing volumes of asset data. This article explores how IEEE Std 1808-2024 and OFIL’s Gridnostic platform enable structured data collection, AI-based diagnostics, and smarter decision-making across transmission infrastructure.

Cut maintenance costs and boost efficiency with Ofil’s DayCor® UV cameras! Detect corona discharge, target only contaminated insulators, and save millions on unnecessary washing.

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