Megger UHF PDD – Handheld Online Potential Difference Substation Surveying System

• Non-invasive online PD measurements above common disturbance frequencies.
• Dual channel for comparing two sensors simultaneously.
• Large colour touchscreen and foil keypad for easy operation.
• Synchronises with power frequency via internal, mains, or external sensor.
• Supports di-pole antenna (standard), HFCT, TEV, UHF coupling sensors.
• Distinguishes corona/surface from internal PD.

The Megger UHF PDD serves as a smart, portable companion for substation maintenance crews. It rapidly identifies insulation vulnerabilities in components such as cable terminations, surge arrestors, or voltage transformers without causing any operational interruptions. Its dual-channel functionality and PRPD pattern analysis simplify fault classification, and the broad array of compatible sensors—spanning UHF, RF, and beyond—adapts effortlessly to varied and noisy environments. Lightweight, with a user-friendly interface and extended battery life, it provides dependable diagnostics that enable timely interventions, ultimately helping to maintain network stability and prevent unexpected failures.