UHF-PD Sensor Drain Valve

For decoupling of electromagnetic PD signals from the inner of oilpaper insulated transformers

Applications

Application: UHF-Partial Discharge Measurement on Transformers

  • For decoupling of electromagnetic PD signals from the inner of an oilpaper insulated transformers
  • Sensors support "Performance/Sensitivity Check" (High frequent test pulse can be injected by further integrated electrodes)
  • Grounded sensors (for low frequencies)
  • Sensor set-up at drain valves (e.g. normally used for oil filling)
  • Standard design for DN 50 or DN 80drain valves
  • Further designs and dimensions on request

  • Development in cooperation with Institute of Power Transmission and High-Voltage Technology (IEH) at the University of Stuttgart (Germany)

User Benefits

  • Easy-installable sensor
  • No outage needed for installation
  • Shielded against external noise by the transformer tank
  • suitable for PD monitoring (permanently installed)

Specifications

  • Signal decoupling in ultrahigh frequency range: 200 MHz – 1 GHz
  • Leak-tightness tested for oil temperature 120 °C at 5 bar pressure
  • Sealing: Viton® (FKM)
  • Insulation material: PA GF 30
  • Recommended load impedance: 50 Ohm

  • Flange: DN50/DN80 (other designs on request)
  • Maximum slide-in: 450 mm
  • Weight: approx. 3 kg (6.61 lbs)

Accessories

Instruments:

Further accessories:

  • Carry case for easy and safe transportation
  • UHF Pulse generator LDC-7/UHF

Downloads

  • Data Sheet UHF PD Sensor Drainvalve