Application Scenario

Tranformers, Switchgears & HV Cables

High Voltage (HV) installations and equipment are prone to partial discharge, when the electrical stress exceeds the dielectric withstand capabilities of a specific portion of the insulation. Repetitive discharges can lead to progressive deterioration of the insulation, eventually culminating in equipment failure, power outages, and safety hazards.

flashover
flashover
Equipment and cables damaged due to partial discharge
infestation
infestation
Damaged caused by infestation at HV cables

With PDzen Partial Discharge Monitoring System, we provide accurate detection and analysis of PD allow for timely maintenance and intervention, ultimately extending the lifespan of electrical equipment and ensuring the reliability of power systems.

foil
foil
Sensor from PDzen Partial Discharge Monitoring System

Underground Cables

High Voltage (HV) and Extra High Voltage (EHV) cables and joints are often direct-buried at depths of 1.5 to 3 metres beneath roads and pavements. During road diversions or land redevelopment, excavation and earthworks in the vicinity can expose these assets to risks such as:

  • Ground vibration from heavy machinery

  • Soil settlement or cave-ins due to poor or unforeseen site control

  • Movement of cables and joints caused by shifting earth or debris piles

    • These direct and indirect impacts accelerate mechnical stress and ageing of cables and joints. Over time, such disturbances can initiate partial discharge (PD) activity, which is a leading indicator of insulation degradation and eventual failure.

    cave=in High voltage cables affected during earth cave-ins
    exposed-cables
    exposed-cables
    Cables and joints exposed during excavation and earthwork
    damaged-cables
    damaged-cables
    Uncovered EHV cable sheaths damaged at earthwork sites

    The PDzen Partial Discharge Monitoring System is specifically designed to detect early PD activity in disturbed cables and joints. By providing constant monitoring, supervision and snap shots PD detection, we ensure that:

  • Cable and joint integrity are safeguarded during and after earthworks

  • Service life is not compromised by construction-related disturbances

  • Asset owners gain confidence in long-term reliability and compliance

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