The ultrasonic Airborne Acoustic (AA) sensor detects airborne acoustic signals from PD into air, including corona (in outdoor substations) and surface discharges and tracking (in indoor air‑insulated switchgear (AIS). It can be installed either inside or outside the switchgear panel, with a clear line‑of‑sight to the PD source.

The AA sensor is used in the HVPD’s MV AIS Switchgear Monitoring Solution in conjunction with the HVPD Kronos® Monitor and Linearplex™ expansion module. When there is a requirement for OLPD monitoring of MV AIS, the AA sensors are daisy-chained inside and along the AIS switchboard, typically with one sensor per switchgear panel.

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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
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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