SCM-PDS-UHF PD sensor

The UHF (Ultra high frequency) partial discharge detection sensor is a fast, non-intrusive tool for detecting partial discharge in medium and high voltage substations. SCM-PDS-UHF performs sensitive PD measurements in the 500-1500 MHz range, quickly identifying and verifying internal insulation defects without power outages or equipment disassembly, improving maintenance efficiency and grid reliability.

With ultra-high frequency bandwidth, the sensor effectively avoids industrial interference and accurately captures high-frequency PD signals. Its high sensitivity and strong anti-interference capability ensure reliable online monitoring, providing essential data for preventive maintenance and insulation diagnostics.

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FEATURES

  • Rugged, compact design;
  • Built-in sensitivity of -70 dBm
  • Strong magnets to attach sensor;
  • Wide bandwidth of 500 to 1500 MHz
  • Non-intrusive detection method;
  • Optional RS485 Modbus-RTU communication;
  • Customizable according to customer needs;
  • Suitable for online or offline PD measurements.

 

APPLICATIONS

  • Factory and on-site testing;
  • Medium and high voltage switch cabinet;
  • Medium voltage/high voltage substation;
  • Generators and large rotating motors;
  • High voltage withstand voltage test system;
  • Photovoltaic power station box transformer.

 

SPECIFICATION

Parameter Value
Power supply 24VDC
Detect range -70 ~ 10dBm
Pass band 500~1500MHZ
Resolution / Accuracy ±1dBm
Trip threshold 60dB (from -70dBm)
Release mode Continuous until power off
Alarm relay Dry contact, 5A@250Vac
Signal transmission distance Up to 80m (260 feet)
Static power consumption <10mW
Installation method 4* Strong magnet, wall mount
Sampling period 4S

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