UHF-PD Sensor Drain Valve

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)
  

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

• 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)

Instruments:

• PD Measuring System PD-Smart-UHF or LDS-6/UHF
• PD Monitoring Device PD-Guard/UHF

Further accessories:

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

• Data Sheet UHF PD Sensor Drainvalve