What is Partial Discharge?

Partial Discharge is a degenerative phenomenon that affects the electrical insulation of medium & high-voltage equipment.

pd-icon

Partial discharge (PD) is the best early warning indicator of electrical insulation degredation in assets operating at 3.3 kV and above.

pd-icon

PD testing and monitoring supports Condition Based Maintenance programmes – enabling operators to improve their asset reliability and avoid unplanned outages.

pd-icon

By providing a condition assessment of their in-service assets, HVPD help operators avoid in-service failures, reduce unplanned outages and improve their maintenance efficiency – saving them time and money.

Our Partial Discharge Technology

We supply a comprehensive range of equipment to detect and monitor on-line Partial Discharge for the condition assessment of in‑service power cables, switchgear, motors and generators, and transformers rated at 3.3 kV and above. Suitable for MV, HV and EHV assets, our Partial Discharge testing and monitoring technology provides you with an early warning of developing insulation faults, helping you to avoid costly failures and resulting unplanned network outages.

Request a Callback

file-icon
CASE STUDY
  • A Successful Implementation of HVPD’s Survey, Test and Monitoring Technology Prevents an In-service Failure of an 11 kV Switchgear Panel View case study
  • Continuous On-Line PD monitoring of 20+ year old Ex/ATEX 10 kV motors to support Reliability Based HV Asset Life Extension View case study
file-icon
PUBLISHED PAPERS
  • 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

Our Products & Services

Alongside our on-line Partial Discharge test and monitoring technology solutions, we provide a wide range of services to our clients, ensuring that the best test, sensor and monitoring solution is implemented, on a client-by-client basis. Our engineering team work closely with our customers to provide them with a tailored and cost-effective on-line Partial Discharge test and monitoring programme across the complete MV/HV/EHV network. We are an extension of your asset management team.

Monitoring
Read more
Handheld
Read more
Diagnostic
Read more
Sensors
Read more
Training
Read more
Get information on all the services we offer. See all services