• High Voltage Testing Services

    LIVE HV provides a complete range of High Voltage Testing services including Off-Line Partial Discharge testing for CablesSwitchgear, Rotating Machines and Transformers. Our services detect any insulation issues during the commissioning of plant, prior to it being placed into service. Off-Line testing can also be conducted during routine outages as part of a maintenance regime or to confirm suspected faults.

  • Cables

    LIVE HV provides off-line commissioning, testing, maintenance and fault location for cables up to 220 kV including Partial Discharge (PD) and Tan Delta (TD) measurements.

    When VLF cable testing is combined with diagnostic Partial Discharge (PD) and Tan Delta (TD) measurements we gain a far greater insight into the cable condition and can detect cable failure modes. PD testing is the best tool for detecting localised faults such as poorly terminated joints or terminations. TD testing which measures if there is any resistive component to the insulation provides us with overall health or condition of the cable insulation. Combined, PD and TD testing provides the ultimate in cable condition assessment.

    LIVE HV’s specialised cable fault location techniques have been developed to accurately locate cable faults while not placing any stress on the cable. Our cable fault location techniques do not require a ‘thumper’ to be used and can accurately pre-locate and pinpoint both sheath to earth and core to screen faults for LV and HV cables. Successful techniques have been developed from years of Partial Discharge testing and include a combination of HV bridge, arc reflection and electromagnetic wave detection.

  • Rotating Machines

    LIVE HV provide a complete range of high voltage testing services for motors and generators. Condition assessment tools such as Winding Resistance, Partial Discharge and Tan Delta measurement are coupled with expert installation of sensors for online measurement. We have the knowledge to ensure your essential plant operates faultlessly.


  • Switchgear

    LIVE HV provide out of service and shutdown testing and maintenance for your switchgear. In addition to high voltage testing and commissioning we have solutions to maximise the performance and lifespan of your asset. Busbar maintenance, relay injection and circuit breaker timing tests are examples of the full suite of services we provide that give you a clear understanding of your switchgear’s true condition.

    Switchgear Off-Line PD testing will detect insulation faults that traditional tests frequently miss. Energizing the switchgear with a 50 Hz transformer in conjunction with our testing equipment allows for sensitive and accurate PD measurement in accordance with IEC 60270. PD fault location is provided through the use of an array of sensors and analysis methods.


  • Transformers

    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.

  • Test Facility

    Our HV testing facility in Melbourne, Australia provides HV testing services including PD and TD testing with very low background noise levels (<5 pC).

Do you require High Voltage testing?

We can offer a range of services for your complete high voltage network.

Contact Us Today