OSM Longshot

OSM-Longshot On-Line Partial Discharge Test Unit with PDGold© and PDReader© Software

A portable on-line partial discharge test unit with PDGold© PD test data collection software and PDReader© post-processing, analysis and report software. Capable of non-obtrusive on-site PD testing and monitoring of MV and HV equipment without the need to de-energise or take out of service.

On-line PD Testing of the Following Equipment:

  • MV/HV PILC/XLPE Cables, Joints, Terminations and Sealing Ends
  • MV/HV Current and Voltage Instrument Transformers (CT and VT)
  • MV Metal-Clad Switchgear (Air and Solid Insulated)
  • Motors and Generators

PDGold© Features

  • PD signals captured synchronously across 50/60 Hz power cycle
  • Auto "event recognition" of PD pulses and noise rejection
  • Spot Tests of 5 to 10 minutes
  • Short Term Monitoring 1-24 hours, up to one week
  • On-line cable PD measurements in picocoulombs (pC) with calibrated HFCT sensor (no need for external pC calibrator)
  • RF noise reduction filter
  • Also suitable for off-line testing at 50/60 Hz

PDReader© Features

  • Post data collection analysis of PD test files
  • May be installed on any Windows 2000/XP PC - Test in the field, analyse in the office
  • PDF report output

PD Sensors Used

  • High Frequency Current Transformer (HFCT)
  • Transient Earth Voltage (TEV)
  • Airborne Acoustic (ultrasonic)
  • High Voltage Capacitor (off-line or permanent installation only)

Additional Software Options

  • PDMap©: On-line PD location on cables of up to 5km
  • ScopeControl©: Waveform capture package for advanced PD signal analysis

Training and Support

  • 3 day site training course at customer's site recommended
  • Free software upgrades and off-site support via email for one year from date of purchase
  • Further training, support and software upgrade packages available
Typical Specifications (Option: WR 44Xi)
Input Channels 4 BNC
Sample Memory 5 MPts/Channel
Max Sample Rate 5 GS/s
Max Sample Rate for Power Cycle Capture 250 MS/s
Bandwidth 400 MHz
Display 10.4" SVGA Colour Touch Screen
Operating System Microsoft Windows XP Professional
PC Specs Processor: 2.2 GHz; RAM: 1 GB; Hard Disk: 30 GB
Supplied Accessories Soft carry case, mini keyboard and optical mouse, portable hard disk/USB memory stick

Further Information