Maximising high voltage network integrity, keeping you online, all the time.


Transformers are a critical component for providing reliable energy flow in a high voltage network. To complement your oil sampling and for dry-type transformers LIVE HV provides a wide range of in-service and offline testing

Our services

Online Partial Discharge Testing
Offline Testing
Continuous Monitoring
Online PD Testing Transformer

Online PD testing produces an instant condition assessment of your transformers insulation via spot testing; or extended monitoring is performed to determine how operational and environmental impacts affect the transformer during regular use. Measurements are taken while in service via bushing tap sensors, acoustic sensors or HFCT’s attached to connected HV cables.

Key Benefits

  • Identify & monitor insulation damage prior to failure
  • Trend insulation condition without outages
  • Acoustic testing for defect location
  • Reduce downtime & increase safety
offline testing transformer

Offline Testing

From commissioning to asset management, LIVE HV provides a complete range of testing services for your high voltage transformers.

While the most common and very successful method for analysing transformer condition is oil sampling, there are many cases where high voltage testing services are required and beneficial. In addition to online PD testing and bushing tap sensor installation, LIVE HV provides a complete range of transformer high voltage testing services for commissioning and shutdown maintenance.

  • Bushing Tap PD sensor installation
  • Oil Sampling
  • Partial Discharge testing
  • Dielectric Dissipation
  • Turns Ratio test
  • Insulation Resistance (IR) & Polarisation Index (PI)
  • Sweep Frequency Response Analysis
  • CT Burden & Excitation
continous monitoring transformer

Continuous Monitoring

For Critical Plant it can be best practice to have permanent 24/7 monitoring which provides ultimate peace of mind regarding a machine’s condition. LIVE HV can provide, install & monitor a range of portable & permanent monitoring solutions, including hazardous area installations. We have the option of renting or purchasing monitoring equipment.

Key Benefits

  • Installation & monitoring provided
  • Service contracts for data analysis & monitoring equipment
  • Rental options available
  • Transportable options can be moved around site by the customer
  • Remote access for real-time monitoring

Case Studies

Read more for examples of LIVE HV providing engineering and service solutions for our partners.

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