Partial Discharge Monitoring System & Testing Equipment

Identify and address equipment faults at the earliest possible stage.

Partial discharge monitoring system identifies the earliest signs of an emerging fault in electrical power systems. Accurately identifying the signs of PD gives you the best chance of mitigating problems before they occur - and the best results come from advanced partial discharge measurement and monitoring solutions, through the use of partial discharge testing equipment, including partial discharge test kits, meters, analysers, and monitoring systems.

Megger's partial discharge testing equipment allows for testing and analysis, using partial discharge meters, detectors, and monitoring systems that can identify deteriorating insulation and weak spots in rotating machines, transformers, cables, switchgear, and bushings. Our advanced partial discharge testing equipment, analysis and monitoring systems can be used to implement condition-based maintenance strategies on-site, or to complete rigorous quality assurance tests to fulfil factory acceptance testing (FAT) and site acceptance testing (SAT) requirements.

Ready to harness the powerful searching capabilities of PD analyser but can't allocate resources today? Let Megger handle it for you. Explore the comprehensive services we offer and Megger's advanced partial discharge testing equipment and monitoring systems to support reliable, predictive maintenance and ensure asset longevity.

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Large partial discharge analyser, supporting partial discharge detection and testing in distribution networks through the use of Megger's equipment.

PD Sensors

Bushing Accessories

Discontinued

FOS1 Fiber Optic Transmission System

Analog transmission of analog signals from DC up to 10 MHz

Discontinued

FOS2 Fiber Optic Transmission System

Digital transmission of analog signals from DC up to 20 kHz converted at a sampling rate of 100 kHz

Discontinued

FOS3 Fiber Optic Transmission System

Suitable for high voltage and high current laboratories including pulse-power applications

Browse all partial discharge services

Reduce downtime and risk:

Megger's partial discharge testing equipment is one of the most effective ways of detecting insulation degradation at the earliest stages. Megger’s sensitive PD monitoring solutions give you all the tools you need from partial discharge testing equipment and meters, to PD detectors. Partial discharge testing tools will detect these issues at their inception and adopt condition-based maintenance — key for avoiding power disruptions and downtime, minimising operational risks and making the best use of your resources.

Expert support for your needs:

It’s not just Megger's PD testing solutions that are designed to be intuitive and high quality. Our support is too. With the acquisition of PDIX by the Megger group, we draw from the extensive and proven expertise in PD testing and high voltage diagnostics that has made the PDIX brand a global leader for more than 30 years. The Megger team of experts are on hand to share their unrivalled expertise in PD testing, helping you get the full benefit of PD insights — no matter how complex your application is.

Quality you can rely on:

Megger’s partial discharge test kits and testing equipment for utilities represents some of the best tools available to give you confidence in the condition and reliability of your assets. Whether you’re conducting FAT or SAT tests, maintenance inspections, or evaluating an asset after repair, our high-quality solutions support best practices for partial discharge detection and analysis, ensuring that your asset is ready for safe and reliable operation.

Reliability you can count on:

Equipment can quickly become less reliable over time as insulation ages and PD becomes more common, which in turn accelerates the rate of degradation. Megger's advanced partial discharge analysis and monitoring systems highlight when these faults begin to occur so you can act to improve equipment reliability at the earliest opportunity, without risking unplanned downtime, using our market-leading partial discharge test kits.

What is partial discharge (PD) in electrical systems?

Partial discharge is a localised dielectric breakdown in the insulation of electrical systems, often caused by discontinuities or imperfections. Using the best partial discharge testing and measurement equipment for utilities allows these early defects to be detected in line with best practices, providing advance warning to prevent faults and protect critical assets.

Why is partial discharge testing important?

Partial discharge activity is an indicator of an incipient insulation fault which can lead to an insulation breakdown and costly outage of the electrical asset. Megger’s partial discharge detection, testing and analysis equipment supports effective fault identification by forming part of a robust partial discharge monitoring system, enabling proactive planning in line with best practices to reduce the risk of insulation system breakdown.

How can partial discharge monitoring prevent equipment failures?

Failures of essential electrical assets can cost millions in loss of income or equipment replacement. A partial discharge monitoring system provides early indication of incipient faults, delivering the insight required to support condition-based maintenance using partial discharge testing before a fatal breakdown.

Understanding how to choose the right partial discharge detector is key to effective testing and detection. Pairing your partial discharge testing equipment with Megger’s analysis and monitoring tools for utilities provides early fault identification and helps safeguard both your electrical systems and your business.

What tools are used for partial discharge testing and measurement?

Depending on the device under test or monitoring, different sensors and instruments can be used: a combination of GISmonitor or AIAcompact and UHF sensors for Gas Insulated Switchgears (GIS), ICMmonitor, ICMobserver and ICMsystem for transformer/rotating machine monitoring and measurement along with coupling capacitors or bushing adaptors, and cable testing can be performed with ICMflex.

Megger's PD portfolio offers a wide range of partial discharge test and measurement equipment for utilities, providing highly reliable and accurate measurements - including solutions recognised among the best partial discharge testing equipment for utilities to cover a range of applications.

Megger partial discharge analyser equipment testing high-voltage transformer on-site with engineers performing PD testing and diagnostics.

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Can’t find what you’re looking for? Contact us to speak with an expert about finding the right partial discharge test equipment, like a PD detector, for your specific needs or find where you can buy what you need.

Additional Resources

Take a deeper dive into partial discharge testing with our articles and insights.

On-line partial discharge (PD) spot testing in a European refinery (Part I)

A long-term Megger customer faced a critical 110 kV cable failure, driving efforts to prevent future incidents.

Find out more about On-line partial discharge (PD)

On-line partial discharge (PD) spot testing in a European refinery (Part II)

Routine on-line PD measurements at a European refinery revealed discharge activity near an aging transformer, prompting further analysis to extend its life, manage risks, and optimize costs.

Find out more about On-line partial discharge (PD) (Part II)

On-line partial discharge (PD) measurements of a critical motor in a European chemical plant

Learn how a chemical plant extended motor life and avoided costly downtime.

Find out more about On-line partial discharge (PD) in a European chemical plant

Interview with PD experts

Our experts discuss the value of PD analysis, the causes of PD, and share insights into best practices for partial discharge detection and analysis in real-world applications.