PMDT Partial Discharge Testing Equipment

PMDT is the global power industry's most capable and advanced resource for On-Line Partial Discharge Test Equipment and testing services.  Over 20 years of ongoing research and development have given rise to a complete spectrum of diagnostic and monitoring systems for MV and HV power substations.


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    PDetector is the ideal partner for condition-based maintenance programs. Online partial discharge testing is a method of inspecting the insulation of electric power systems while e...

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    PDStar is the ideal tool for condition-based maintenance programs. Online partial discharge testing is a method of inspecting the insulation of electric power systems while equipme...

  • PDiagnostic.png
    The PDiagnostic is a portable system that utilizes Ultra-High Frequency {UHF), Acoustic Emissions (AE), High-Frequency Current Transformer {HFCT), and Transient Earth Voltage{TEV) ...

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    The PDiagnosticM utilizes UHF, AE, and HFCT sensors to monitor, detect, and diagnose partial discharge signals in a multitude of medium and high voltage electrical equipment such a...

  • UHF Ultra High Frequency 01.png
    300MHz - 1.5GHzTransmitted Electromagnetic Waves (EMI) are emitted when PD occurs. The UHF sensor is a special antenna with a response range from 300MHz to 1.5GHz. Virtually all ty...

  • HFCT Wireless Sensor.png
    500kHz - 50MHzHFCT sensor is a split core CT with High frequencyresponse. It does not respond to 60Hz power. PD activity induces a HF current pulses onto surroundinggrounds. For sa...

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    3MHz to 100MHz.Induced TEV signals serve as a good indicator of PD activity in metal-clad switchgear. These RF signals can be induced on surrounding metal work and adjacent switchg...

  • Acoustic Contact Sensor.png
    20kHz -300kHzPD inside of oil-filled equipment or SF6 equipment will have an acoustic emission at a high frequency near 90kHz in SF6 and near 160kHz in oil. These emissions do not ...

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    40kHz Ultrasonic PD activity which is at or near the surface of an insulator will produce an ultrasonic and sometimes audible emission. Surface tracking and corona always produce ...

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    The charger is used to charge the main handheld unit as well as the two wireless transmitters. A mini USB cable is used for charging as well as transfer of onboard data to PC. The ...
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