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PF3000 Power Filter Characteristic Tester User Manual

Figure 4-9 PF3000 Oscilloscope interface



“Save report”: Press

, it generates Word and TXT format reports.



“Open report”: Press

, it opens TXT format report.



“Emulation”: Calculate and display the ideal amplitude-frequency and phase-frequency

characteristic curve and harmonic vibration frequency and impedance according to

inductance, resistance and capacitance values by pressing

.

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Summary of Contents for PF3000

Page 1: ...5 12 2015 This manual is the publisher of PONOVO POWER CO LTD To make any kind of copy of this manual please contact PONOVO POWER CO LTD in advance This manual represents the technical status for the moment of publishing The product information description and specifications mentioned in the manual do not have any contact binding force and PONOVO POWER CO LTD remains the right to make modification...

Page 2: ... 7 Communication Interface 10 2 8 Other Parameters 10 2 9 Working Principle 10 3 Operation Guide 11 4 Software Operation 13 4 1 Main Interface 13 4 2 Parameter Description 17 4 2 1 Users set parameters 17 4 2 2 Parameters 17 4 3 Toolbar Introduction 19 4 4 Test process 22 Appendix A Research on Balance Adjustment Method about H Bridge Wire Capacitor Group 24 Appendix B Trouble shootings 30 B 1 Ove...

Page 3: ...event static electricity the tester must be connected to ground before testing 3 Any connector in front panel is not allowed to connect with ground 4 When the device is working the output signal cable is prohibited to plug out 5 Disconnect the power supply before disconnecting cables 6 Avoid electric shock accident when the output voltage is above 36V 7 It s not allowed to feed external voltage cu...

Page 4: ...of power filter L test of power reactor C test of power capacitor Z test of power filter for resistors Unbalance vector measurement of H bridge capacitor PF3000 applies the advanced microelectronic and DSP technology including power signal source weak current signal detection and 0 5 class high accuracy voltage and current measurement It features in high accuracy quick test speed and multiple test...

Page 5: ...unction keys 3 Mouse 4 Ethernet 5 USB 6 Signal indictors POWER POWER indicator lights when the power is supplied RUN RUN indicator flickers or off when the kit is working OVERHEAT when PF3000 is overheat or overload during output the OVERHEAT will light It will automatically stop output while overheat It is suggested to continue working after the indicator turns off 5 ...

Page 6: ...voltage Connect the voltage of test object with the voltage measurement interface while doing test Please note the RMS of voltage can t be more than 70V otherwise the kit will be damaged Imbalance test interface The interface is only used when testing unbalance current Please refer to connection diagram in Appendix A Grounding terminal In order to assure operator and kit s safety please connect th...

Page 7: ...PF3000 Power Filter Characteristic Tester User Manual 1 3 3 Rear Panel Figure 1 2 Rear Panel 1 Ventilation Note Don t block the ventilation during testing 2 ON OFF 3 Power 7 ...

Page 8: ...ement System Parameters Voltage 0 2 60V voltage RMS error 0 5 Current 0 01 5A current RMS error 0 5 Phase measurement accuracy 1 Imbalance test error 20uA 10mA current measurement accuracy 1 Filter tuning characteristic of measurement error Amplitude error 0 5 Phase error 1 2 3 Fault Protection Overload protection when the voltage output is short circuit or overloaded PF3000 will stop working auto...

Page 9: ...emperature 20 2 5 45 Relative humidity 45 75 10 90 Atmospheric pressure 86kPa 106kPa 80kPa 110kPa AC power supply Voltage 220V 1 220V 10 Frequency 49 5Hz 50 5Hz 49Hz 51Hz Wave Sine wave THD 2 Sine wave THD 5 2 5 Safety Performance Indoor temperature and humidity 75 the insulation resistance meets 1000V megger for power supply metal chasis resistance 300MΩ 500V megger for voltage output metal chasi...

Page 10: ...ight 18Kg Standard 2 9 Working Principle PF3000 consists of linear power power module digital control module and signal adjustment module etc CPU Power signal output AD sampling Signal adjustment Signal isolation AD sampling Signal adjustment Signal isolation Unbalance current input 20uA 10mA Current input 5mA 5A AD sampling Signal adjustment Signal isolation Voltage input 0 60V Test object Figure...

Page 11: ...C connection Offline method means PF3000 can work independently without PC by controlling keyboard It can finish all test items the same as working with PC PC connection means PF3000 works with PC to finish test items Note Offline and PC connection can both complete the same test items but PC connection method works faster than offline method 11 ...

Page 12: ... 1 PF3000 Operation Panel The operation panel is the same as the front panel Please refer to Front Panel part Main operation for offline rotate mouse to control cursor The functions of keys L and R are the same as those of mouse The number keys are used to set test parameters 12 ...

Page 13: ...PF3000 Power Filter Characteristic Tester User Manual 4 Software Operation 4 1 Main Interface Figure 4 1 main interface Test type Press drop down menu of test type to select the test item 13 ...

Page 14: ...t test parameters The filter characteristic curve will be displayed in the right Figure 4 2 Parameter setting interface L test Figure 4 3 L test interface Note In order to assure the inductance accuracy it is suggested the frequency set 500Hz and current output 0 5A 14 ...

Page 15: ...eristic Tester User Manual C test Figure 4 4 C test interface Note In order to assure the capacitance accuracy it is suggested the frequency set value 500Hz and current output 0 5A Z test interface Figure 4 5 Z test interface 15 ...

Page 16: ...3000 Power Filter Characteristic Tester User Manual Imbalance test interface Figure 4 6 Imbalance test interface Note In order to assure accuracy of imbalance K it is suggested the frequency set 1000Hz 16 ...

Page 17: ...voltage If the output current is more than 5A in order to assure instrument s safety it will decrease output voltage automatically to assure the current within 5A Start frequency Termination frequency Step Set the start and termination frequency and step Output voltage Set the voltage output amplitude Output frequency User should set output frequency while making L test C test and Z test 4 2 2 Par...

Page 18: ...PF3000 Power Filter Characteristic Tester User Manual A C dC1 C dC3 C dC2 C dC4 Uin Ibph Ic B Figure 4 7 Imbalance rate analysis on H type Capacitance Bridge 18 ...

Page 19: ...acteristics within 5s by pressing to calculate the frequency and impedance value of harmonic vibration point The method is mainly used to evaluate the harmonic vibration point of filter with unknown parameters For the filter with knowing the parameters users can check the wiring connection according to resistance frequency and phase frequency characteristics Save Press to save the test parameters ...

Page 20: ...ss it generates Word and TXT format reports Open report Press it opens TXT format report Emulation Calculate and display the ideal amplitude frequency and phase frequency characteristic curve and harmonic vibration frequency and impedance according to inductance resistance and capacitance values by pressing 20 ...

Page 21: ...PF3000 Power Filter Characteristic Tester User Manual Figure 4 10 PF3000 simulation interface Help Show software version information by pressing Exit Exit the software by pressing 21 ...

Page 22: ... voltage according to site test Generally 20V is ok max voltage is 60V in order to decrease power loss 7 Set No of frequency in Frequency setting Generally it is suggested measuring the general harmonic vibration frequency then set the smaller frequency step near the harmonic vibration point and set the bigger frequency step far away from the point The test time for resistance phase frequency char...

Page 23: ...PF3000 Power Filter Characteristic Tester User Manual 13 Press to save report Figure 4 12 Test result of Z F 23 ...

Page 24: ...the figure C1 is the main capacitor and it bears most of the power frequency voltage in operation In order to obtain high sensitivity performance of the internal fault protection the C1 in converter station AC filter is connected in H bridge and configured with the high sensitivity unbalance current relays Figure A 1 A typical schematic wiring diagram of double tuned filter To find the parameters ...

Page 25: ...0kV converter station will be a situation that the capacitor inherent imbalance current exceeds the permissible range To prevent the partial capacitor in the capacitor group failure resulting the other capacitors damage it needs to set the value of imbalance current alarm Ibj according to the capacitor internal components over voltage permissible value For imbalance current exceeds the standards c...

Page 26: ...hen the mean value of the bridge capacitance is positive deviation represent with positive numbers The use of equivalent parameters equivalent circuit can be expressed as follow Figure A 3 H bridge capacitor equivalent circuit Connect the signal source S1 and H bridge capacitor as Figure A 4 and measure the total current vector Ic flowing through the H bridge capacitor group and the imbalance curr...

Page 27: ...la A 2 shows that the Kbph can be used as sensitive parameters to describe the imbalance status of H bridge 4 arms The balance adjustment solution of H bridge four arm is based on the Kbph value and direction We are required to decrease the absolute value of elements to reduce the H bridge imbalance If the molecule is zero the H bridge capacitor group imbalance can be eliminated Formula A 1 shows ...

Page 28: ...NO 4 arm of the H bridge increase on NO 2 arm of the H bridge increase on NO 3 arm of the H bridge and make the amount of the adjustment value of capacitance equal to the ΔC1 then the H bridge capacitor is adjusted to the equilibrium state 2 When ΔC1 0 increase the capacitance on the NO 1 arm of the H bridge increase the on the NO 4 arm of the H bridge reduce on the NO 2 arm of the H bridge reduce...

Page 29: ...cording to kbph Calculate the permissible imbalance Kbj Ibj Icn based on Icn and Ibj Add Uout YES ΔC1 0 YES Reduce C1 and C4 increase C2 and C3 Increase C1 and C4 Reduce C2 and C3 End the imbalance adjustment Kbph 0 5 kbj NO NO ΔC1 4 m Kbph C1 Figure A 5 Steps to adjust H bridge capacitor bank balance 29 ...

Page 30: ... 2 Check if there is no electricity in power supply 3 If the fan works well it might be the power indicator broken B 3 Can not connect with computer The computer connecting with PF3000 must install an Ethernet card 100MBytes s If it can t work online please check following points 1 Check the Ethernet connection 2 Check the power supply is on 3 Check the IP address of computer The computer IP addre...

Page 31: ... specifications Type Specs Qty unit piece Pictures Power output line 1 5mm2 x10m Black 1 Red 1 1 5mm2 x15m Black 1 Red 1 Signal cable 1 0mm2 x10m Black 1 Red 1 1 0mm2 x5m Black 1 Red 1 Earthing lead 2 5mm2 x5m Yellow Green 2 Clamp 5cm Black 2 Red 2 Crocodile clip 2cm 3cm 4cm Black 2 Red 2 31 ...

Page 32: ...r 15M is available according to the filter specifications The power output line can also be connected in series C 2 2 Signal cable The signal cable is used to transmit the tested signal into the kit It is connected with the voltage measurement end or the Imbalance current end Different length of cables can be chosen according to the filter specifications It can also be connected in series 32 ...

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