We at HVPD (High Voltage Partial Discharge) supply a comprehensive range of equipment to detect and monitor On-line Partial Discharge (PD).

Suitable for the condition assessment of in-service Medium Voltage (MV), High Voltage (HV) and Extra High Voltage (EHV) power cables, switchgear, transformers, generators and motors including Variable/Frequency Drives rated at 3.3 kV and above. Our PD testing and monitoring technology not only helps make networks safer, it provides customers with the best early warning indicator of developing insulation faults, helping them to avoid costly failures and resulting unplanned network outages. Our Head Office, Manufacturing and Training Facility is based in Manchester, UK, and hosts a 100 kV Faraday Cage facility. As an international organisation we support our global customers with offices in USA, China, Middle East and Western Australia as well as an extensive network of international channel partners. Businesses that put their faith in HVPD include Chevron, BP, Total, ExxonMobil, International Paper, Freeport LNG, Sabic, SSE, Scottish Power, CNRL, Hong Kong Electric Company, Repsol Sinopec, CNOOC, Shell, Irving Oil, and more. HVPD is proud to have won three Queen’s Awards for Enterprise in the categories of Innovation and International Trade (x2) and is committed to reinvesting in research and development year-on-year to stay at the front of our field.

Full Asset Lifecycle

Our technology can be installed at new build sites to monitor PD from commissioning of your new assets, we are involved with stakeholders in new build projects from end users and operators, EPCs and system integration with OEMs. Our systems can also be installed as retrofit for brownfield sites for asset life extension as part of Condition Based Maintenance programmes to provide a complete network full asset lifecycle approach.

HVPD works with a variety of MV & HV networks, with exports making up more than 90% of our total sales, demonstrating our truly global footprint in the following industries:

    • Oil & Gas (Upstream, Midstream & Downstream)
    • Renewables
    • Heavy Industry (Mining, Minerals & Metals)
    • Power Generation (Coal, Natural Gas, Shale,  non-renewables)
    • Industrial Private Networks (Data Centres, Pulp & Paper, Transport, Pharmaceuticals, Leisure)
    • Utilities (Transmission & Distribution, Waste & Water Management)

HVPD have patented technology for remote monitoring of HV assets that allow sensors to be remotely located so that the PD monitoring can encompass the switchgear cabinet, termination, feeder cable and remote asset (eg transformer, rotating machine).

Our Knowledge is Your Power

The foundations of our extensive knowledge base have been built on the research and development work carried out by the HVPD directors and senior engineers. This knowledge has been passed on to our training, test and customer service engineers who transfer it to our clients through training courses and data analysis service contracts.

We have consistently published the results of our research and development work at a number of international conferences around the world, with more than 50 papers published so far.

Meet the Team

Marc Foxall

Business Development & Test Services Director

View Profile

Alex Polley

Director of Systems Development

View Profile

Dr Malcolm Seltzer-Grant


View Profile

Kelly Thorley


View Profile

Contact us

  • On-line Partial Discharge Testing and Monitoring of 11 kV Switchgear for an Australian Mining Operator View case study
  • Utilising Holistic Condition Monitoring on MVIHV Motors to Reduce Unplanned Downtime Download
  • On-line Partial Discharge Condition Monitoring of Complete Networks for the Pulp and Paper Industry: Challenges and Solutions Explained Through Case Studies Download
  • A Novel Solution for the Reliable On-Line Partial Discharge Monitoring (OLPD) of VSD-Operated EX/ATEX HV Motors Download
I really couldn’t stay in a role that made me unhappy.

Jordan, Design & Engineering Support in his 10th year at HVPD

Working at button-logo Current Vacancies