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Posting our consistent weekly Thursday event at 5pm here is easy, but we can do better than that. Not only will we promise to host additional site visits, and workshops, but post all currently advertised opportunities (from professional organisations we're aware of) for you to network with industry, updated every Sunday.

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Off and On-line Acceptance and Diagnostic Testing of Distribution Cables

  • Engineers Australia WA, Auditorium 712 Murray Street West Perth , Western Australia , 6005 Australia (map)

Increased searching Acceptance Testing and ongoing Condition Monitoring is an important strategy to improve the reliability of Medium Voltage distribution cable networks (up to 33kV). The industry requires simple and cost-effective commissioning and diagnostic tools that accurately assess the cable insulation condition.

This paper reviews the most commonly performed offline diagnostic tests of Insulation Resistance, TDR, tan δ measurements, Partial Discharge measurements (using both VLF and DAC voltages) the Monitored Withstand Test and the outer sheath tests and their ability and sensitivity to determine different defects. In addition, Online Partial Discharge Spot-Testing can under the right conditions provide an indication about the presence and location of Partial Discharge activities along the cable and as such trigger the need for more detailed off-line testing.

Using several case studies, the benefit of each of these techniques is described - and how the combination of the above tests can identify weaknesses, thus building a comprehensive picture of the insulation condition of the cable and improving the reliability of the network. At the same time other factors such as type of cable accessories or loading of the circuit installed can influence test results. If these are not taken into account, and the conducting evaluation is based purely on comparisons to universal standards, it can lead to a misdiagnosis as highlighted in the case studies.

About the Speaker

Karl Haubner - Applications Engineer, High Voltage Test Application Specialist - Asia Pacific, Doble Engineering Company (Australia)

Karl Haubner joined Doble Engineering in 2004 and is employed as the High Voltage Test Application Engineer servicing the Asia-Pacific region.

Prior to his appointment with Doble Engineering he worked for the utility Western Power. As the Superintendent of the HV Test Laboratory he was responsible for all technical aspects of the test group such as development and introduction of new condition monitoring techniques on distribution, transmission and generating plant. In addition to his employment with Doble, Karl also provides testing and consultancy services to the industry via his company High Voltage Solutions.

He is the author of several technical papers on condition monitoring of HV assets and cable fault location and has delivered short courses on testing techniques at University and Industry level. Karl has a Diploma in Electrical Engineering and is member of Cigre D1, AS Committee EL-007, and of VDE.

Please note timings for this event are 5.30pm for 5.45pm start - 7.00pm.

Earlier Event: September 12
CEC Perth Installer Night
Later Event: September 20
Engineering Standards Presentation

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