XD55 Series Transient Earth Voltage PD Detector

XD55 Series Transient Earth Voltage PD Detector

Detecting partial discharge (PD) activities through measuring transient earth voltage (TEV) signals. Commonly applicable to switchgears and transformers.

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 11063-2013 Technical specification for transient earth voltage partial discharge detector.

 •  Q/GDW 11060-2013 Field application guide for transient earth voltage partial discharge on-site testing technology of alternating-current metal-enclosed switchgear.

*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 10pC.
 •  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 discharge patterns for automated signal classification.
 •  Accurate localization:Supports highly accurate electric and electric-acoustic localization.
 •  Synchronization:Wired or wireless synchronization of timing and phase.
 •  Easy operation:The lightweight and compact hand-held device can also be used with lanyard or tripod.Sensors can be mounted with magnets.
 •  Long battery life:Each removable lithium battery provides more than 8 hours of continuous working time.
 •  Designed for field use:The touch screen display is readable even under direct sunlight, suitable for field use.

Technical Specifications:

 •  Sensitivity:                                                                 10pC;

 •  Measuring frequency band:                                       3 ~ 100MHz;

 •  Sampling resolution:                                                  16Bit;

 •  Sampling rate:                                                            250MS/s;

 •  Dynamic range:                                                          60dB;

 •  Gain:                                                                           0 ~60dB;

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

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

 •  Measuring stability:                                                     ±5%;

 •  Linearity error:                                                             ±3%;

 •  Battery:                                                                        Lithium battery 24V/5Ah;

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

 •  Weight:                                                                        1.5kg (3.3lb).

Product Models:




Typical application


Transient Earth Voltage PD Detector

1 ~ 4



TEV/Ultrasonic Combined PD Detector

2 ~ 4



In-service PD detector

2 ~ 4



TEV PD testing of switchgear cabinets

Certification report


Electrical PD positioning of switchgear cabinets

PD surveying

Electrical-acoustical PD positioning of switchgear cabinets

    Product Category