Transient Earth Voltage PD Detector

Core 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

Features

• Principle
   Using capacitance coupled technology to collect the partial discharge signals and test TEV of switchgear to analyze the safety of switchgear.
• Anti-interference
  Using our signal identification technology and according to the strength characteristics, the background signals will be erased. According to the phase characteristics, the signals in any phase point and band can be erased. You can choose any phase point and band to test.
• Analysis and diagnosis
  The instrument has more methods like one single circle, peak value and PRPD to get the peak values, effective values, phases, times of partial discharges and full circle or half circle amplitude etc.  The test data is shown in circle chart, statistic chart, trend chart, frequency chart and PRPD chart etc. The instrument has some useful setting functions. We supply some typical charts. Some are  from our long time experience of after sales  service and some are from well-known charts to help the tester to analyze the possible defects in equipments. Using outside synchronization unit the phase can be locked.
  Using more sensors the partial discharges can be located. 
• Calibration
  Using the standard signals generator calibration can be done in our instruments.

Technical Parameters

• Precision:                            ≤10pC.
• Testing frequency band:     3～100MHz.
• Signal sampling:                 Sampling accuracy 16Bit,Sampling rate:250MS/s.
• Dynamic Range:                 ≥60dB.
• Synchronization mode:       wired, wireless;frequency 30～300Hz;voltage AC10～380V;Wireless distance ≥75m. 
• Stability:                              ≤±5%.
• Linearity error:                    ≤±3%.
• Battery:                                lithium battery,24V/5Ah.
• Dimension:                          236×177×53mm.
• Weight:                                ≤1.5kg.

Product model