XD56 High Frequency PD Detector

XD56 High Frequency PD Detector

Detecting partial discharge (PD) activities through sensing high frequency pulse signals on the grounding circuit. Typical applications are for transformers and cables.

Complying Standards:

•  IEC 62478/TS/Ed1 High voltage test techniques-Measurement of partial discharges by electromagnetic and acoustic methods.

•  DL/T* 417-2006 Guide for partial discharge measuring of power equipment.

•  Q/GDW** 11304.5-2015 Technical specification for energized test device of electrical equipment Part5: Technical specification for high-frequency partial discharge detector.

•  Q/GDW 11400-2015 Field application guide for high frequency partial discharge on-site testing technology of power equipment.

•  *DL/T stands for “Recommended standards of electric power industry of China”.

•  **Q/GDW stands for “Corporation standard of State Grid Corporation of China”.


•  Industry-leading sensitivity:Sensitivity equal to or better than 5pC.
•  Robust to interferences:Complete suite of interference reducing technologies: Spectrum analysis, frequency-selective filtering, interference separation, and comprehensive shielding.
•  Diagnosis and analysis:Full range of analysis assisting graphical interfaces: PR, PRPD, PRPS, Correlation, and Selecting/masking windowing.Built-in interference and dischargepatterns for automated signal classification.
•  Synchronization:Wired or wireless synchronization of timing and phase.
•  Sensor variety:Sensors have various types and shapes to fit different types of devices.
•  Easy operation:The lightweight and compact hand-held detector can also be used with lanyard or tripod.The sensors can be easily mounted.
•  Long battery life:Each removable lithium battery provides more than 8 hours of continuous working time.
•  Designed for field use:The touch screen display on the unit is readable even under direct sunlight, suitable for field use.

Technical Specifications:

•  Sensitivity:                                                   5pC;

•  Measuring frequency band:                         3 ~ 30MHz;

•  Sampling resolution:                                   16Bit;

•  Sampling rate:                                             250MS/s;

•  Transfer impedance:                                   5mV/mA;

•  Dynamic range:                                           60dB;

•  Synchronization:                                          Mode: wired or wireless; Frequency: 30 ~ 300Hz, Voltage: AC10 ~ 380V;     

                                                                        Accuracy: 0.01°; Wireless range: 75m (82yd);

•  Measuring stability:                                      ±5%;

•  Linearity:                                                      ±3%;

•  Battery:                                                         Lithium battery 24V/5Ah;

•  Dimension:                                                   236*177*53mm (9.3*7.0*2.0in);

•  Weight:                                                        1.5kg (3.3lb).

Product Models:

Model Name # of Units Application
XD56** High Frequency PD Detector 1 ~ 4 selectable Transformer, cable, power capacitor
XD50** In-service PD surveyor 2 ~ 4 selectable Survey for PD


current sensor

Synchronous signal acquisition

Cable HF PD testing

Transformer PD testing

PD detection competition

Signal classification graph

Phase graph

Certification report

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