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

Our Solutions

HVPD supply innovative, industry‑specific on‑line partial discharge test and monitoring solutions for in‑service condition assessment of power cables, switchgear, motors and generators, and transformers of voltage rating 3.3 kV and above.

Cable Mapping
Read more
HVPD Kronos® Ultimate Software
Read more
High Voltage Coupling Capacitor (HVCC)
Read more
Bushing Tap Adaptor (BTA)
Read more
Outdoor TEV
Read more
Indoor TEV
Read more
Portable HFCT sensors
Read more
SMART-TB3™
Read more
VLF Diagnostic Test Services
Read more
HVPD Kronos® WebView
Read more
Complete HV Network Monitoring
Read more
service
Sensor and Equipment Installation and Commissioning
Read more
On-Line PD Monitoring of VSD (Variable Speed Drives)
Read more
Mobile Diagnostic Off-line Cable Test Services
Read more
Diagnostic Off-line PD Testing
Read more
HVPD test van
Mobile Diagnostic Off-line Cable Test Services
Read more
VLF Diagnostic Test Services
Read more
Diagnostic Off-line PD Testing
Read more
Insulation Resistance (IR) / Polarisation Index Measurements
Read more
Site Surveys and PD Screening
Read more
Motor Current Signature Analysis (MCSA) Service
Read more
service
Sensor and Equipment Installation and Commissioning
Read more
Ultra High Frequency (UHF) Testing
Read more
Thermographic Surveys
Read more
Sensors
Read more
PDS Insight™ Handheld Units
Read more
HVPD Kronos® Portable Monitor
Read more
HVPD Kronos® Lite
Read more
Read up on all the solutions we've offered our clients. See all solutions