PowerDonut

PowerDonut® PD4

State-of-the-art intelligent electronic device for overhead transmission line monitoring

Created in the 1980's, the PowerDonut® is an industry proven sensor for transmission line monitoring. The new 4th generation "PD4" has added features and lower start-up currents. Units have the ability to be installed on live lines and are designed to work both in 50 and 60 Hz systems.


Measurement range goes from 0 to 3000 Amps. The PowerDonut® is self powered via the magnetic field surrounding the conductor and includes a backup programable battery that can power the system for up to 12 hours at levels below 50 Amps.


For data reliability, the PowerDonut® includes an internal memory, that stores up to 1 month of data designed to automatically be sent to the server once communications are restored.


The unit  provides dual communications via a 2.4 GHz XBEE radio transceiver and CAT-M1/NB-IoT cellular communications. Software can be set up to work in a local server or cloud based solutions, with SQL and CSV historical data logging and integration to SCADA systems.

Range Accuracy
Current 0 to 3000 A +/- 0.5%
Voltage 0 to 765 kV +/- 2.5%
Conductor Temperature -40°C to +250°C +/- 0.05°C
Inclination Angle -11° to +11° +/- 0.05°
Operating Temperature -40°C to +60°C

Measurements:


  • Current
  • Voltage
  • Conductor Temperature
  • Inclination Angle (Used to calculate Sag & Tension)
  • Frequency
  • Watts
  • VArs
  • Voltage/Current Phase Angle


Additional optional features


  • Total Harmonic Distortion: Voltage and Current Harmonics  (up to the 31st Harmonic)
  • Fault Detection: On a fault event, the sensor stores 30 current and voltage waveforms, ready to upload to the server when a fault is reported


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