Partial Discharge Testing - Transformers

Advanced PD testing for early insulation fault detection in transformers.

Identify insulation defects with advanced Partial Discharge Testing solutions for power, distribution, and instrument transformers. Ensure reliability with on-site monitoring, factory acceptance testing, and cutting-edge diagnostic tools.

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Improved Safety via Early Insulation Detection

Megger’s PD testing identifies insulation defects early across windings, bushings, and tap changers, helping prevent dangerous failures. By detecting degradation before it escalates, operators can minimise risks and protect critical transformer infrastructure.

Strengthen Transformer Reliability

With advanced PD visibility, on-site diagnostics, and continuous monitoring, Megger enables proactive maintenance that reduces downtime and extends asset lifespans. These tools ensure dependable performance in power, distribution, and instrument transformers.

Actionable Diagnostic Insights

Megger’s cutting-edge diagnostic tools deliver precise PD signals with excellent signal‑to‑noise ratios, offering clear insight into insulation condition. These data-driven assessments support informed decisions throughout factory testing, monitoring, and field investigations.

All Partial Discharge Testing and Monitoring Cable systems Rotating machines Transformers Switchgear (AIS/GIS/GIL) Factory Acceptance Testing (FAT) Systems Partial Discharge Services Partial Discharge Portable Testing Equipment

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Expertise with Proven Results

With over a century of leadership in electrical testing , Megger is globally a trusted name in asset diagnostics. We’ve worked with utility companies and major OEMs, delivering reliable partial discharge insights that clients rely on.

Comprehensive Solutions

Megger provides a unified ecosystem of tools, addressing diagnostic needs across transformers, GIS, and rotating machines. From factory acceptance tests to online monitoring, our portfolio ensures reliability at every stage of an asset’s lifecycle.

Advanced Diagnostic Tools

Our cutting-edge technology ensures superior signal-to-noise ratios, enabling the highest levels of diagnostic precision. Innovating alongside major industry leaders, Megger delivers sensors and tools that reduce downtime and improve operational efficiency.

Tailored Services and Support

Megger spans the complete diagnostic and monitoring landscape with services that include data analysis, consulting, and customised training. Our global network ensures you’re supported no matter where your assets are located.

Frequently Asked Questions

What is partial discharge testing?

Partial discharge testing is a diagnostic method to detect and locate electrical insulation defects within high-voltage assets. These faults, if left unaddressed, can lead to significant failures in transformers, switchgear, and rotating machines. By assessing insulation health, partial discharge testing helps prevent costly outages and maintain asset reliability.

Why is Partial Discharge Testing crucial for transformers?

Insulation failures account for over 50% of high-voltage asset failures. Detecting partial discharges early helps identify signs of degradation before faults develop, allowing for proactive maintenance, extended asset lifespans, and reduced downtime.

What tools does Megger provide for Partial Discharge Testing?

Megger offers a comprehensive portfolio of tools, including portable monitoring devices, on-site diagnostic systems, and permanent online monitoring solutions. We also provide centralised architectures for efficient data analysis and expert-level consulting services.

Can Partial Discharge Testing be conducted on-site?

Yes, Megger provides flexible on-site solutions tailored to your equipment and infrastructure. Our services include installation, commissioning, and troubleshooting, performed by seasoned engineers to minimise downtime and maximise asset reliability.