Digital Partial Discharge Test Equipment Double Channels PD Detector

Digital Partial Discharge Detecting Tester , Double Channels PD Detector

1.Product introduction:

JDF-2000 Partial Discharge Detector is used for partial discharge detection for HV transformers, CVT, mutual inductors, reactors, capacitors, HV bushings, arresters, motors, etc. The instrument integrates functions of computer control, digital sampling and printing.Partial discharge detection is an important PD instrument for inspecting the quality of electric equipments.

II.Main Components:

III. Detecting principle figure

Note : The PD free test transformer set (power frequency voltage withstand test set) rises the target testing voltage to tested object (such as power transformer ,CB, bushing, CT,PT ,discloser and so on )which PD detecting needed , the coupling terminals of voltage divider will has some PD coupling signal to the PD detecting tester JFD 2000, then get the PD level from the tested object.

VI. Technical features

1. Program controlled working method.

2. Character display and indication..
3. Store and print data.
4. Automatically produce test report.
5. 2D and 3D image for PD measurement.
6. Adopts digital windowing technique, with strong anti-interference ability.
7. Two or four channels measurement and digital difference technique, can test PD signal of two measuring points for one or two specimens, convenient to analyze PD signal source.

V. Technical Parameters of PD tester XD2014

1)  Power:                                             0~220V (1±10%), 50Hz (1±3%)
2)  Detection sensitive:                         <0.02pC
3)  Detection channel:                          2 or 4 channels
4)  Sampling rate:                                 20MHz per channel
5)  Sampling accuracy:                         12Bit
6)  Measuring signal frequency range: 0.1pC~1000nC
7) PC operation system:                       Windows XP
8) Bandwidth selection:

• Low side: 10, 20, 30, 80kHz (OFF)
• High side: 100, 200, 300, 1000kHz (OFF)

9) Gain gear:                                         5 gears
10) Linearity error:                                ±5%
11) Positive and negative pulses corresponding asymmetry error: ±5%
12) Range switching error:                    ±5%
13) Low repetition pulse corresponding error: ±5%
14) Synchronizing function:                  automatically synchronizing inside and outside, can synchronize with any frequency.
15) Windowing function:                       windowing in any phase, can open symmetrical window, positive window, anti window
16) Measuring mode:                           calibration, measuring, graphic analysis and other modes.

17) Tuning capacitance range of detection impedance:                         25pF~6000pF
18) Output range of calibration pulse generator:                                   10pC~2000pC
19) Injection capacitance of calibration pulse generator:                        50pF,200pF
20) Pulse distinguishing time of calibration pulse generator:                  <100ns23)

21)Calibration voltage step-up time of calibration pulse generator:        <60ns

22) Calibration voltage step-down time of calibration pulse generator:  >100μs

VI. Optional matched other test set

• PD detecting AC high voltage generating systems  :  CQSB series PD free power frequency test transformer systems

                                                                                             FKWJF series Induced voltage withstand test systems for Power transformer

• PD signal coupling unit                                            :  Coupling voltage divider  or standard coupling capacitor , no corona type