LDP-5

Portable, differential LEMKE PROBE for detection of dangerous partial discharges

Applications

  • Detection of dangerous partial discharges (PD)
  • Mode for differential measurement with respect to PD fault location
  • Diagnostics on HV apparatus in field (for instance cable sealing ends and joints, surge arrestors, power transformers, voltage transformers and electrical machines)
  • Evaluation of the PD behaviour of low voltage components (for instance in the case of opto-couplers, capacitors, transformers and motors)
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User Benefits

  • battery powered portable device for both, on-site and laboratory PD diagnosis
  • Low Cost PD detector for research and development
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Specifications

  • Detection of the electromagnetic transients of PD events
  • Measuring the PD quantity "apparent charge"
  • Exchangeable capacitive and inductive sensors
  • Potentialfree signal transmission via fibre optic link
  • Noise reduction mode
  • Measuring sensitivity if charges pulses are directly injected : 0,05 pC
  • Gain steps : 1, 2, 5, 10
  • Vernier range : 1 : 5
  • Output (CHARGE) at full load
    • Pulse shape : triangular, positive
    • Pulse magnitude : 4 V approx.
    • Pulse rise time : < 2 µs
    • Pulse duration : 50 µs approx.
    • Noise level : < 0,2 V
  • Pulse resolution performance for superposition error < 30%
    • Pulse repetition rate : < 100 kHz
    • Double pulse distance : > 2 µs
  • Power supply : 8 Mignon batteries (LR6)
  • Dimensions : 220 × 60 × 100
  • Weight : 1 kg approx.
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Accessories

  • LDC-5 - Calibrator for external calibration of the PD measuring circuit in pC of apparent charge up to 500 pC
  • LDA-5/U4 - UHF-Converter
  • LDO-5 - Optical receiver for potential-free signal transmission
  • LDA-5/S4 - Ultra Sonic Adapter
  • LDA-5/K - Acoustic Converter
  • Carry case "G" which contains the basic equipment
  • Carry case "E" which contains the basic equipment and main accessories
  • Carry case "B" which contains extended accessories
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Downloads

  •   Prospect LDP-5
Download Prospect
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