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IPEC PD Detector

Partial Discharge Spot Testers

Detect and measure PD activity levels with IPEC's range of Partial Discharge Spot Testers

On-line PD Spot test tools are used for regular surveying of partial discharge.

They range from simple handheld devices, with an in-built display showing PD activity levels, to advanced systems that record and save PD data.

Contact us for more detail and customised solutions

Partial Discharge Portable Tester

Partial Discharge Portable Tester

PD Detector Pro

PD Detector™ Pro brings new innovation, ground-breaking functionality and advanced design to deliver a new generation in handheld PD Spot Testing. Building on IPEC's market leading technology, the PD Detector Pro brings new features to ensure the most accurate testing of your MV and HV assets.

  • Advanced auto PD and Noise differentiation
  • Wirelessly synchronised to HV asset via in-built field detector
  • Widescreen colour touchscreen for high resolution data display

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Partial Discharge Portable Tester

PD Detector

The PD Detector is an on-line partial discharge (PD) spot tester for HV assets. The instrument detects TEV signals generated by internal discharge in Air Insulated Switchgear (AIS), acoustic discharge generated by surface tracking or corona, high-frequency signal generated by cable partial discharge, and ultra-high frequency signal generated by internal discharge in Gas Insulated Switchgear (GIS). A mobile device receives data directly from the instrument for display and synchronisation with a central server.

  • Data synchronisation to central server
  • Log and trend PD activity against particular assets
  • Data integration with asset management systems

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precise-pd results ipec

Partial Discharge Portable Tester


PrecisePD is an on-line Partial Discharge Spot Testing and Location System for Cables and Switchgear with advanced signal processing, used for the detection of PD in high noise environments. PrecisePD allows users to investigate and locate Partial Discharge sources on live electrical equipment, helping to prevent potential faults in high voltage assets. Designed by IPEC Ltd, the PrecisePD Spot Tester takes advantage of the many years of IPEC’s field experience. Using the advanced DeCIFer (designed to operate in high noise environments) the unit offers significant advantages over many other Spot Testing systems.

  • Sensitive PD detection in high noise environments
  • Test cables up to 4km in length
  • Accurate Cable PD Mapping for defect location

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ipec pd-sg1

Partial Discharge Portable Tester


The PD-SG1 is a dual transducer Switchgear PD detection instrument. The unit detects TEV signals generated by internal discharge, as well as acoustic discharge generated by surface tracking or corona. Partial discharge activity inside metal clad high voltage plant induces small voltage impulses (called Transient Earth Voltages) on the surface of the metal cladding. TEVs travel around the cladding surface to the outside of the switchgear panel, where they can be picked up externally using capacitively coupled transducers.

  • Ultrasonic detection of surface PD activity, displayed on the LCD screen as dB reading
  • Measurement of TEV signals generated by internal PD
  • Cycle Mode for viewing PD pattern in power cycle (Phi Q), allowing for the elimination of noise

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Case studies

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PD on 13.8kV busbar

A case study discussing partial discharge damage found on a 13.8kV busbar.

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PD-SGS/PD Detector on site

Utility, Middle East – Detecting Pending Asset Failure

This case study will detail how IPEC’s PD-SGS detected a pending asset failure in a Middle East utility company.

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The ASM ipec - UK airport

Airport, UK – Asset Monitoring

In 2018, following a recent high voltage failure, IPEC were tasked with finding a condition monitoring solution at an airport in London.

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Oil Company, UK – Partial Discharge Detected & Located on 33kV Assets

A sharp increase of Partial Discharge activity was detected on a 33kV switchgear panel by IPEC’s on-line PD Monitoring system, the ASM. High TEV PD signals were detected across the switchboard.

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chemical company

Chemical Company, South Korea – Fault Prevented

IPEC kept a close eye on the rise, and the criticality went from 0 to 100 in a very short period of time meaning a failure was imminent.

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Saudi faulty cable

Utility Company, Middle East – Cable PD Detected

The examination showed extensive PD damage around the trifurcating point of the termination.

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oil company south korea ipec

Oil Company, South Korea – IPEC ASM Detects Partial Discharge

IPEC conducted an annual data analysis report for the client, and it concluded there were high levels of Partail Discharge on cable EA4800B.

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Seoul transport company, South Korea – PrecisePD Located PD on Cable

IPEC conducted Partial Discharge cable mapping for the customer in Seoul using the PrecisePD location and detection system.

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Utility, UK – Fault Prevented in 33kV Switchgear

Partial Discharge spot testing was carried out in the 33kV substation.

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