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Ultra-High Frequency Partial Discharge Monitor for OEMs.


Rugged Monitoring PD211 is a compact design, designed for reliable Partial Discharge (PD) Monitoring Module for Transformers, Switchgears, GIS and Power Cable Terminations. 

PD211 is based on the UHF (Ultra High Frequency) technology for PD signal acquisition and analysis. The Monitor is a combination of reliability and user-friendly configuration software. It has two variants with 04 channel and 08 channels, that can connect to 4 and 8 UHF-PD sensors respectively. The system can be integrated with any UHF PD sensors that are having response between 100 MHz to 2000 MHz. 



  • Online continuous partial discharge monitoring  
  • Online PD measurement during HV AC testing 
  • Multiple point PD monitoring 
  • PD monitoring in Transformer using UHF PD Sensors  
  • PD Monitoring in GIS using UHF PD Sensors 
  • PD Monitoring in MV Switchgear using UHF PD Sensors 
  • PD Monitoring in Power Cables Terminations using UHF PD Sensors 

  • Suitable for OEM-type applications (TMS, Gateways)
  • Multiple mounting options - Din-Rail and Direct (Bare-board)
  • Cost optimized solution for Partial Discharge monitoring
  • Software designed for integration into monitoring systems /gateways
  • Robust datalogging and Analytics
  • Customizable according to customer specific applications
  • Most accurate PD analysis with advanced noise gating
  • Highly robust and safe monitoring systems
Technical Specifications

Number of Channels

04 or 08 (Simultaneous acquisition, No Multiplexing)

Sampling Rate

125 Ms/s

Acquisition Bandwidth

300Mhz - 2000Mhz

Vertical Resolution


Noise Elimination - Bad Pass Filters - Software Noise Gating

Tuneable for dierent frequencies including but not limited to 440Mhz, 800Mhz, 1100Mhz, and 1600Mhz Advanced denoising algorithms

Data Storage (Memory)

MicroSD external memory slot (Up to 2 TB)

Compatible PD Sensors

Any Ultra High Frequency (UHF) PD Sensors with sensitivity 100Mhz - 2000MHz

Synchronization Inputs

2 Inputs (Internal and External)

Serial Port

RS-485 with Modbus RTU and Can Port with CANBUS protocol

Configuration Port

Ethernet Port for configuration

Operating Temperature

-30 to 75 °C

Storage Temperature

-40 to 85 °C


4.92" x 4.92" x 1.89" (125mm x 125mm x 48mm)


95% Non Condensing

Power Input

12 - 24V DC ( Default)

Power Consumption


No of Relays Outputs

01 x Fail Safe Relay for System Failure

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